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RECOMMENDATION FOR PROMOTION AND TENURE

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RECOMMENDATION FOR PROMOTION AND TENURE

    RECOMMENDATION FOR PROMOTION AND TENURE

    PART I

    Date: July 10, 2010

    Name: Philippe Piot

    Present Rank: Associate Professor, Northern Illinois University

     Scientist I, Fermi National Accelerator Laboratory

    Department: Joint appointee the Department of Physics (at NIU) and the Accelerator Physics Center

    (at Fermilab)

Educational Background

    1995-1999 Université de Grenoble I, France, PhD in Physics (specialty: Beam Physics) 1994-1995 Université de Grenoble, France, M.S. in Physics

    1990-1994 Université de Nice Sophia-Antipolis, France, B.S. in Theoretical Physics

Professional Experience

    2009-present Scientist I (tenured) , Accelerator Physics Center, Fermi National Accelerator Laboratory 2009-present Associate Professor (tenured), Northern Illinois University

    2007-present Visiting Fellow, Argonne Accelerator Institute, Argonne National Laboratory, IL 2005-2009 Associate Professor, Northern Illinois University, DeKalb, IL

    2007-2009 Associate Scientist, Accelerator Physics Center, Fermi National Accelerator Laboratory, 2007-2008 Visiting Scientist and Group Leader of the Advanced Accelerator R&D group in the

    Accelerator Physics Center, Fermi National Accelerator Laboratory

    2002-2005 Associate Scientist, Fermi National Accelerator Laboratory, Batavia, IL 1999-2002 Research Associate, DESY, Germany Hamburg,

    1999 Research Associate, Thomas Jefferson Nat‟l Accelerator Facility, Newport News, VA

Research

    A. Program of Scholarly Activity

    Research Interests and Past Achievements

    My current research efforts focus on charged-particle beam physics, with particular

    emphasis on the production, manipulation, diagnosis and potential use of bright electron

    beams. High-brightness electron beams have a variety of scientific and industrial applications

    ranging from high energy physics (e+/e- next-generation linear collider), light sources

    [single-pass short-wavelength free-electron lasers (FELs)], medicine, to solid state physics

    (electron microscopy). Over the last twelve years research, I have specialized in

    computational and experimental aspects pertaining to the beam dynamics of high-phase-

    space-density electron bunches.

    During my doctoral research at Jefferson Laboratory (JLab), Newport News VA, I

    initially developed and installed a novel non-interceptive beam diagnostic based on optical

    transition radiation for the CEBAF recirculating accelerator. This instrument demonstrated

    some fundamental aspects of transition radiation and was also used to control and monitor

    some of the beam parameters parasitically without disrupting nuclear physics experiments.

    For the high-average-power FEL at JLab, my original contribution was to develop and apply

    beam diagnostics to study intricate beam dynamics associated with energy-recovering linear

    accelerators. A great success was the work on the energy compression scheme, a phase-space

    manipulation in the longitudinal degree of freedom needed for proper energy recovery of the

    electron bunch after it participated in the FEL process. This technique contributed

    significantly to the success of this proof-of-principle FEL that produced coherent infrared

    radiation at unprecedented high average power. At DESY, Hamburg Germany, I developed a

    novel scheme for the generation of electron bunches and their low-energy transport for the

    foreseen European X-ray FEL. The novelty of the design was to implement a staged approach

    in the phase-space manipulations: use a long laser pulse to reduce charge density and improve

    Piot Recommendation for Tenure & Promotion, Part I, page 1

    the brightness in the transverse phase space, then compress the bunch. The technique was implemented and resulted in operating a FEL at the unprecedented short wavelength of 16 nm. This design now serves as a blueprint for several proposed projects (e.g. LUX at Berkeley, BESSY FEL in Berlin, Germany). At Fermilab, Batavia, IL, I led a small facility dedicated to R&D in advanced accelerator physics. My primary contribution was the generation and characterization of angular-momentum-dominated electron bunches and their transformation into a flat beam using a manipulation capable of exchanging phase-space coordinates between the two transverse degrees of freedom. These results have important consequences. For instance, the proposed e+/e- linear collider would not need an electron damping ring (which in the present design is a 6 to 17 km accelerator ring!). Another potential application is the reduction of the undulator length needed to achieve significant gain in a free-electron laser thereby paving the road to compact, possibly University-sized, coherent x-ray sources.

    What follows is a brief technical summary of my research program at NIU. I continue my association with Fermilab and started collaboration with Argonne National Laboratory (both with the High Energy Physics and the Advanced Photon Source divisions), Thomas Jefferson National Accelerator Laboratory (with the free-electron laser group), University of Wisconsin at Madison (with the Synchrotron Radiation Center), and with the Massachusetts Institute of Technology. The researches I pursue involve multidisciplinary efforts with topics involving classical electrodynamics, optics, solid-state physics, and computational physics thereby offering excellent opportunities for graduate and undergraduate students.

Achievements since Joining NIU: Theory & Simulations

     Producing high brightness electron beams needed for accelerator-driven coherent light sources for multidisciplinary applications or for beam colliders to generate copious amount of elementary particle for high-energy physics is challenging. The main challenges to create and transport a highly charged electron bunch stems from the repulsive Coulomb forces between the electrons. This “space charge” effect results in unwanted non-linear dynamics that spoils

    the beam brightness. Several avenues are currently pursued to increase the brightness of electron beams including the development of novel electron source.

    Simulation and design of the International Linear Collider Test Facility currently under construction at Fermilab: Fermilab is currently building a ~1 GeV accelerator test facility, the Inernational Linear Collider Test Accelerator (ILCTA), with the primary intent to test subsystems associated to the proposed 32 km long International Linear Collider (ILC). The ILCTA will be the backbone of accelerator R&D at Fermilab. I performed extensive calculations to design and optimize the performance of the ILCTA. My main contribution was the design of the electron sources and initial accelerating sections. The design I proposed has been chosen as integral part of the ILCTA, and most importantly will also support a wealth of possible advanced accelerator R&D beyond the ILC R&D. One of my students, Christopher Prokop, is working on this topics as part of his PhD research.

    Manipulation of electron beams between two degrees of freedom: It is sometime

    impossible to avoid significant degradation of the beam parameters due to collective effect and instead one has to find “trick” to manipulate the beam such that the desired beam parameters in one degree of freedom are achieved. I collaborated with a team from the Stanford Linear Accelerator Center and Argonne National Lab and developed a new technique to manipulate a bunched electron beam. The technique was shown to dramatically improved the performance of foreseen next generation of accelerator-based light sources. This idea has since then triggered a proof-of-principle experiment in preparation at Argonne which is the topic of Marwan Rihaoui‟s Ph.D dissertation.

    Piot Recommendation for Tenure & Promotion, Part I, page 2

    Simulation and design of novel field emission electron sources: In collaboration with Dr.

    Mihalcea (research scientist in the Dept. of Physics) we performed the first-ever realistic simulations of a new type of electron sources based on field emission cathode using the numerical tools developed in our group. This type of field emission cathodes could pave the road to very compact short wavelength sources. Preliminary calculations are very encouraging regarding the capabilities of such field emitters and will be reported at the International Linear Accelerator Conference in September 2008 by Dr. Mihalcea and later by myself at the Directed Energy Physics Society Symposium in November 2008.

    Development of novel diagnostics for charged-particle beams: The beams produced by

    state-of-the-art accelerators could have extremely small sizes (nanometer) and duration (femtosecond). Very precise diagnostics are therefore needed to resolve the beam properties. The duration of extremely short electron bunches is generally measured by analyzing the radiation emitted as the bunch intercepts a perfectly conducting screen thereby generating transition radiation. Despite the popularity of this diagnostics we recently found, using a numerical model developed with one of my graduate student (Timothy Maxwell), that several effects can bias the measurement and need to be properly accounted in the analysis [this novel analysis resulted in the publication of two proceedings papers in two international conferences]. Finally a novel concept for a diagnostics capable of measuring beam halo with an unprecedented precision was simulated and a first proof-of-principle experiment conducted at Argonne National Lab. This latter diagnostics has attracted the attention of the Office of Naval Research due to its ability to monitor very low halo which is an important requirement for tuning the electron beam used in MW-class lasers for defense applications.

    Collective effects in charged-particle beams: There are other deleterious effects that can

    significantly degrade the beam‟s parameters and thus the performance of the anticipated light

    source of linear collider. These include radiation emitted by the bunch as its surrounding boundary conditions change (refer to as wakefields) or as it orbits on a curved trajectory. Such “radiative effects” can result in significant disruption (sometime “explosion”) of the bunch that must be understood and mitigated. I recently started a new collaboration with Dr. Rui Li from Thomas Jefferson National Laboratory to further develop a simulation code she initially wrote. The code simulates from first principle the interaction between the bunch and the electromagnetic radiation it radiated in the past as it travels on a curved trajectory. These simulations are computer intensive and we are currently drafting a joint proposal with Argonne and Fermilab to obtain computer time on the supercomputer of the Argonne Leadership Computing Facility. To date my personal involvement has been beam dynamics calculation in electron sources aiming at understanding how local cluster of charges dissipate or propagate as the beam evolves. I was invited to present my work in Berkeley early October 2008.

    R&D on table-top Teraherz light sources: Terahertz (THz) radiation occupies a very large

    portion of the electromagnetic spectrum and has generated much recent interest due to its ability to penetrate deep into many organic materials without the damage associated with ionizing radiation such as x-rays. One path for generating copious amount of tunable narrow-band THz radiation is based on the Smith-Purcell free-electron laser (SPFEL) effect. We recently proposed a simple concept for a compact more efficient SPFEL based on a two-stage process. We demonstrated the capabilities and performances of our proposed configuration via high-performance computer simulation using the conformal finite-difference time-domain electromagnetic solver VORPAL commercially available from Tech-X Corp. (we obtained the software free of charge as part of a collaborative agreement). Our results were published

    Piot Recommendation for Tenure & Promotion, Part I, page 3

in Applied Physics Letters and are featured as one of the “success stories” of Tech-X Corp.

    web site; see http://www.txcorp.com/products/success/index.php .

    Dielectric-loaded wakefield acceleration for compact multi-Giga-electron-volt electron accelerators: We recently won a grant from the Defense Threat Reduction Agency to explore novel charge particle acceleration using dielectric-located structures. Such a method of particle acceleration is expected to yield very high accelerating gradient and could therefore pave the road to table-top, possibly Giga-Electronvolt, electron accelerators. Such "miniature" accelerators have a large number of applications including the generation of coherent radiation for scientific applications or possible detection of fissile material. In a dielectric wakefield accelerator, a highly charged electron bunch is used to create a wake with an associated very high electric field. Subsequent lower charge electron bunches properly delayed can "surf" on this wake and experience very high accelerating field. Ultimately we contemplate the production of GeV electron beam over a meter-long DWFA structure (this represents a down scaling of two order of magnitude compared to conventional accelerators technology). In this project, we will be developing and testing at the Fermi National Accelerator Laboratory's NML facility (currently under construction) a new dielectric structure with improved tuning and wakefield characteristics. The work will also extensively involve high performance computing to develop high-fidelity model of the acceleration scheme in collaboration with Tech-X Corp., a high-tech company specializing in advanced scientific computing.

Achievements since Joining NIU: Experimental Activities

    Development of an on-campus beam physics laboratory: A new beam Physics laboratory

    was setup in the Faraday West building. It includes a compact low energy electron source (see below), and a state-of-the-art femtosecond class laser capable of gigawatts peak power. The laboratory is also equipped with a clean room and other generic laboratory equipments. The laboratory is used to develop/prepare experiments before moving them to an accelerator beamline at Fermilab, Argonne or Thomas Jefferson National Laboratory. In addition the lab is used to train graduate and undergraduate students.

    Data analysis and numerical modeling of the round-to-flat beam transformation experiment at the Fermilab photoinjector: In the Fall 2005 (as I was joining NIU) I completed

    an experiment aimed at producing flat electron beams, I performed extensive theoretical and numerical modeling of this experiment to understand the removal of angular momentum in charged-particle beams. The results of this analysis were published in Physical Review Special Topics Accelerator & Beams in 2006.

    Design and commissioning of a low energy electron source for electron microscopy and Terahertz radiation applications: The low-energy accelerator consists of a novel

    photoemission electron source capable of generating ~30 keV electron beams. It was recently commissioned and demonstrated the generation of high peak current (> 1 Ampere) electron beam with nanosecond duration. The accelerator is simple and yet incorporates most subsystems present in large-scale accelerators, therefore it is an ideal platform to train students (Shafaq Motem got her MS working on the initial design and construction of the accelerator, and two undergraduate students spent a summer helping with the accelerator construction). I plan to use this source together with the aforementioned flat-beam transformation to generate a sheet beam. When propagated close to a metal grating and under certain conditions, the beam will produce a copious amount of radiation in the terahertz spectrum. This apparatus could therefore result in an inexpensive, table-top, tunable, coherent

    Piot Recommendation for Tenure & Promotion, Part I, page 4

    terahertz source with applications in various fields such as biology, medicine, etc. This small apparatus also provides the basis for potential collaborations with other departments.

    Development of laser-based charged particle beam diagnostics: The femtosecond class

    laser is used to generate radiation whose spectrum mimics the electron beam self electric field. It thus offers a way to test and troubleshoot some of the diagnostics we develop a priori to their installations in an accelerator. One of the key diagnostics we are developing intends to detect the electric field associated to a traveling electron bunch via electro-optical imaging. Although such instruments have been developed by other groups, we are significantly extending its capability to eventually measure the duration of sub-picosecond non-ultra-relativistic electron bunches. We also devised a technique allowing such electro-optic diagnostics to monitor the alignment of different time slices within a subpicosceond bunch. This novel capability is extremely important to optimize the performance of next generation coherent x-ray light source based on the free-electron laser scheme. It also has applications to the next generation electron-positron linear colliders to monitor the electron and positron bunch tilt in non zero crossing angle interaction point.

    Observation of space charge guiding in intense electron beam: we demonstrated the

    focusing of an electron beam using external electron beams configured as a “quincunx

    pattern”. The method might have application to control an electron beam size in superconducting electron sources.

    Formation of train of electron microbunch using a phase space exchange beamline: Bases

    on our theoretical work, an experiment was recently completed at Fermilab and demonstrated a beam with a transverse modulation can be converted in a train of microbunch. This proof-of-principle experiment open the path for generating electron beam with arbitrary current profiles which is very challenging to do with conventional method. In turn shaping the current profile of an electron beam as a wide range of applications including the improvement of new particle acceleration scheme, the operation of accelerator based light source in a new regimes and the production of electron beam suitable for time-resolved electron microscopy with sub-femtosecond resolution.

B. Publication & Other Professional Contributions

    I. Refereed Journal Articles

    1. P Piot, Y.-E Sun, J. Power, M. Rihaoui, Generation of relativistic electron bunch

    with arbitrary current distribution via transverse-to-longitudinal phase space

    exchange”, preprint fermilab-pub-09-265-APC, submitted Phys. Rev. ST Accel.

    Beams (2010).

    2. M. Thompson, H. Badakov, J. B. Rosenzweig, G. Travish , N. Barov , R. Fliller, G.

    M. Kazakevich, P. Piot, J. Santucci , R. Tikhoplav and J. Li, “Observations of low-

    aberration plasma lens focusing of relativistic electron beams at the underdense

    threshold”, accepted Physics of Plasmas (2010).

    3. C. Prokop, P. Piot, M.-C. Lin, P.. Stoltz, “Numerical modeling of a table-top tunable

    SmithPurcell terahertz free-electron laser operating in the super-radiant regime”,

    Appl. Phys. Lett. 96, 151502 (2010).

    4. M. Rihaoui, P. Piot, J. G. Power and W. Gai, “Observation and Simulation of Space-

    Charge Effects in an Radio-Frequency Photoinjector using a Transverse Multi-

    beamlet Distribution”, Phys. Rev. ST Accel. Beams 12, 124201 (2009).

    5. M. C. Thomson, H. Badakov, J. B. Rosenzweig, G. Travish, H. Edwards, R. Fliller,

    G. M. Kazakevich, P. Piot, J. Santucci, J. Li, R. Tikhoplav, “Results from the

    UCLA/FNPL underdense plasma lens experiment”, International Journal of

    Modern Physics A 22, No. 22, pp. 3979-3987 (2007).

    Piot Recommendation for Tenure & Promotion, Part I, page 5

6. P. Emma, Z. Huang, K.-J. Kim and P. Piot, “Transverse-to-longitudinal emittance

    exchange to improve performance of high-gain free-electron lasers”, Phys. Rev. ST

    Accel. Beams 9, 100702 (2006).

    7. M. Mihalcea, C.L. Bohn, U. Happek, and P. Piot, “Longitudinal electron bunch

    diagnostics using coherent transition radiation”, Phys. Rev. ST Accel. Beams 9,

    082801 (2006).

    8. P. Piot, R. Tikhopav, D. Mihalcea, and N. Barov, “Experimental Investigation of the

    Longitudinal Beam Dynamics in a Photoinjector Using a Two-Macroparticle Bunch”,

    Phys. Rev. ST Accel. Beams 9, 053501 (2006).

    9. P. Piot, Y.-E Sun, K.-J. Kim, “Photoinjector production of a flat beam with

    transverse emittance ratio of 100”, Phys. Rev. ST Accel. Beams 9, 031001 (2006).

    10. S. Smith et al., “Optics issues in on-going energy-recovering-linac projects”, Nucl.

    Instrum. Meth. A 557, p. 145 (2006).

    11. V. Ayvazyan, et al. [FLASH collaboration], “First operation of a free-electron laser

    generating W power radiation at 32 nm wavelength”, Eur. J. Phys. D 37, p. 297

    (2006).

    12. Y.-E Sun, P. Piot, K.-J. Kim, N. Barov, S. Lidia, J. Santucci, R. Tikhoplav, J.

    Wennerberg, “Generation of angular-momentum-dominated electron beams from a

    photoinjector”, Phys. Rev. ST Accel. Beams 7, 123501 (2004).

    13. M. Dohlus, K. Flottmann, O.S. Kozlov, T. Limberg, P. Piot, E.L. Saldin, E.A.

    Schneidmiller, M.V. Yurkov, “Start-to-end simulations of the Tesla test facilty,

    phase 1”, Nucl. Instrum. Meth. A530, p. 217 (2004).

    14. P. Piot, D.R. Douglas, G.A. Krafft, “Longitudinal phase space manipulation in

    energy-recovering linac driven free-electron lasers”, Phys. Rev. ST Accel. Beams 6,

    030702 (2003).

    15. P. Piot, L. Carr, W.S. Graves, H. Loos, “Subpicosecond compression by velocity

    bunching in a photoinjector”, Phys. Rev. ST Accel. Beams 6, 033503 (2003).

    16. V. Kobets, I.N. Meshkov, I.A. Seleznev, M. V. Yurkov and P. Piot, “Linac injector

    for pumping free-electron lasers (DELSY project)”, Atomnaya ? Energiya 94, No. 1,

    42 (2003) [English translation in Atomic Energy 94, No. 1, 7 (2003)].

    17. C. Gerth, J. Feldhaus, K. Honkavaara, K.D. Kavanagh, P. Piot, L. Plucinski, S.

    Schreiber, I. Will, “Bunch length and phase stability at the TESLA test facility”,

    Nucl. Instrum. Meth. A507, p. 335 (2003).

    18. B. Faatz, A.A. Fateev, K. Flottmann, D. Nolle, P. Piot, E.L. Saldin, H. Schlarb, E.A.

    Schneidmiller, S. Schreiber, D. Sertore, K.P. Sychev, M.V. Yurkov, “VUV FEL-

    driven rf-gun”, Nucl. Instrum. Meth. A507, p. 350 (2003).

    19. R. Bakker et al. [Zeuthen photoinjector collaboration], “First beam measurement at

    the photoinjector test facility at DESY-Zeuthen”, Nucl. Instrum. Meth. A507, p.

    210 (2003).

    20. V. Ayvazian et al., [TESLA Test Facility team], “Study of the statistical properties of

    the radiation from a VUV SASE FEL operating in the femtosecond regime”, Nucl.

    Instrum. Meth. A507, p.368 (2003).

    21. V. Ayvazian et al., [TESLA collaboration], “A new powerful source for coherent

    VUV radiation: demonstration of exponential growth and saturation at the TTF free-

    electron laser”, Eur. Phys. J. D 20, p. 149-156 (2002).

    22. V. Ayvazian, et al. [TESLA collaboration], “Generation of GW pulses from a VUV

    free-electron laser operating in the femtosecond regime”, Phys. Rev. Lett. 88,

    104802 (2002).

    23. M. Huning, P. Piot, and H. Schlarb, “Observation of longitudinal phase space

    fragmentation at the TESLA test facility free-electron laser”, Nucl. Instrum. Meth.

    A475, p. 348 (2001).

    24. T. Limberg, P. Piot, and E. Schneidmiller, “An analysis of the longitudinal phase

    space fragmentation at the TESLA test facility”, Nucl. Instrum. Meth. A475, p. 353

    (2001).

    25. J. Andruszkow, et al., “First observation of self-amplified spontaneous emission in a

    free-electron laser at 109 nm wavelength”, Phys. Rev. Lett. 85, p. 3825 (2000).

    Piot Recommendation for Tenure & Promotion, Part I, page 6

    26. S. Benson, et al., “Jefferson lab free-electron laser starts operation with sustained

    lasing at the kilowatt level”, Synchr. Rad. News 13, p. 13 (2000).

    27. G.R. Neil et al., “Sustained kilowatt lasing in a free-electron laser with same-cell

    energy recovery”, Phys. Rev. Lett. 84, p. 662 (2000).

    28. S. Benson et al., “First lasing of the Jefferson lab. IR demo free-electron laser”, Nucl.

    Instrum. Meth. A429, p. 27 (1999).

    29. J. Song, P. Piot, R. Li, R. Legg, D. Kehne, R. Li, E. Feldl, K. Jordan, J.-C. Denard,

    G.A. Krafft, G.R. Neil, C.L. Bohn, “Real-time phase space monitor”, Nucl. Instrum.

    Meth. A407, p. 343 (1998).

    II. Book chapters (invited where indicated):

    1. G Aaron, et al., “International Linear Collider Reference Design Report:

    accelerator”, volume 3, available at http://www.linearcollider.org/cms/?pid=1000437

    2. A. Aghababyan, et al., “The Technical Design Report of the European x-ray free-

    electron laser”, imprint ISBN 3-935702-17-5 (2006).

    3. J. Lewellen and P. Piot, “Summary of beam quality diagnostics and control working

    group”, in Advanced Accelerator Concepts, M. Conde and C. Eyberger eds., AIP

    Conference Proceedings 877 (AIP Woodbury, NY), pp. 163-174 (2006).

    4. M. C. Thomson, , H. Badakov, J. B. Rosenzweig, G. Travish, H. Edwards, R. Fliller,

    G. M. Kazakevich, P. Piot, J. Santucci, J. Li, R. Tikhoplav, “UCLA/FNPL

    underdense plasma lens experiment: Results and analysis”, Advanced Accelerator

    Concepts, M. Conde and C. Eyberger eds., AIP Conference Proceedings 877 (AIP

    Woodbury, NY), pp. 561-567 (2006).

    5. R. Tikhoplav, G. Kazakevich, D. Mihalcea and P. Piot, “Manipulation of

    photocathode drive laser longitudinal profile”, Advanced Accelerator Concepts, M.

    Conde and C. Eyberger eds., AIP Conference Proceedings 877 (AIP Woodbury,

    NY), pp. 664-700 (2006).

    6. P. Piot, “ Review of experimental results on high-brightness photo-emission electron

    sources”, in High Brightness Beam, Physics and Application of High Brightness

    Electron Beams, Proceedings of the ICFA Workshop Chia Laguna, J.

    Rosenzweig, L. Serafini, G. Travish eds., (World Scientific Publishing Company,

    Singapore, 2004), pp 127-142.

    7. P. Piot, et al. “Sub-picosecond compression by velocity bunching in a photoinjector”,

    in High Brightness Beam, Physics and Application of High Brightness Electron

    Beams, Proceedings of the ICFA Workshop Chia Laguna, J. Rosenzweig, L.

    Serafini, G. Travish eds., (World Scientific Publishing Company, Singapore, 2004),

    pp. 262-269.

    8. J.R. Boyce et al., “The Jefferson lab sub-picosecond x-ray program”, in Application

    of Accelerators in Research and Industry, J. Duggan I. L. Morgan, M. Hall eds., AIP

    conference proceedings 680, p. 325 (2003).

    9. A. Aksenov, et al, “Dubna electron synchrotron (DELSY). Phase I: free-electron

    laser”, conceptual design report ISBN 5-85165-683-2, Joint institute for Nuclear

    Research, Dubna Russia (2001).

    10. R. Brinkmann, K. Flöttmann, J. Rossbach, P. Shmüser, N. Walker, and H. Weise

    (eds), “TESLA The superconducting electron-positron linear collider with an

    integrated X-ray laser laboratory (volume 2)”, Technical Design Report, ISBN 3-

    935702-02-7 (2001)

    11. J.S. Price et al, “5-MeV Mott polarimeter development at Jefferson Lab”, in

    Polarized Gas Targets and Polarized Beams, R. Hold ed., AIP Conference

    Proceedings 421 (AIP Woodbury, NY), pp. 446-450 (1997).

    12. P. Piot, J.C. Denard, P. Adderley, K. Capek, E. Feldl, “High-current CW beam

    profile monitors using transition radiation at CEBAF”, Beam Instrumentation, A.

    Lumpkin and C. Eyberger eds., AIP Conference Proceedings 390 (AIP Woodbury,

    NY), pp. 298-305 (1996).

    III. Professional conferences/workshops publications (invited where indicated)

    Piot Recommendation for Tenure & Promotion, Part I, page 7

1. C. Prokop, P. Piot, M.-C. Lin, P. Stoltz, “Start-to-end simulation of a compact

    terahertz Smith-Purcell free-electron laser”, to appear in the Proceedings of the 1st

    International Particle Accelerator Conference (IPAC10), 23-28 May 2010, Kyoto,

    Japan, pp. 2093-2095 (2010).

    2. Y.-E Sun, P. Piot, A. Johnson, A. Lumpkin, J. Ruan, R. Thurman-Keup,

    “Experimental generation of longitudinally modulated electron beams using an

    emittance exchange technique”, to appear in the Proceedings of the 1st

    International Particle Accelerator Conference (IPAC10), 23-28 May 2010, Kyoto,

    Japan, pp. 4313-4315 (2010).

    3. P. Piot, Y.-E Sun, M. Church, “Beam dynamics simulations of the NML

    photoinjector at Fermilab”, to appear in the Proceedings of the 1st International

    Particle Accelerator Conference (IPAC10), 23-28 May 2010, Kyoto, Japan, pp.

    4316-4318 (2010).

    4. A. S. Johnson, H. T. Edwards, T. W. Koeth, A. J. Lumpkin, P. Piot, J. Ruan, J.K.

    Santucci, Y.-E Sun, R. Thurman-Keup, “Demonstration of transverse-to-longitudinal

    emittance exchange at the Fermilab photoinjector”, to appear in the Proceedings of

    the 1st International Particle Accelerator Conference (IPAC10), 23-28 May

    2010, Kyoto, Japan, pp 4614-4616 (2010).

    5. Y.-E Sun, P. Piot, A. Johnson, A. Lumpkin, J. Ruan, R. Thurman-Keup, “Conversion

    of a transverse density modulation into a longitudinal phase space modulation using

    an emittance exchange technique”, to appear in the Proceedings of Workshop on

    the Physics and Applications of High-Brightness Electron Beams 2009

    (HBEB09), Nov. 16-19, 2009, Maui HI; preprint available at arXiv:1003.3126v1

    (2010).

    6. C. Prokop, P. Piot, M.-C. Lin, P. Stoltz, “Numerical simulation of a compact

    terahertz Smith-Purcell free-electron laser”, to appear in the Proceedings of the

    2009 International free-electron laser conference 2009, 23-28 August 2009,

    Liverpool UK (3 pages ,in press).

    7. P. Piot, A. Bracke, V. Demir, C. Jing, T. J. Maxwell, J. G. Power, M. M. Rihaoui,

    Longitudinal beam diagnostics for the ILC injectors and bunch compressors”,

    Proceedings of the 2009 Particle Accelerator Conference (3 pages, in press).

    8. T. M. Maxwell, and P. Piot, “Proposal for a Non-Interceptive Spatio-Temporal

    Correlation Monitor”, Proceedings of the 2009 Particle Accelerator Conference (3

    pages, in press).

    9. M. M. Rihaoui, P. Piot, J. G. Power, D. Mihalcea and W. Gai, “Measurement and

    Simulation of Space Charge Effects in a Multi-Beam Electron Bunch from an RF

    Photoinjector”, Proceedings of the 2009 Particle Accelerator Conference (3 pages,

    in press).

    10. M. M. Rihaoui, P. Piot, J. G. Power, D. Mihalcea and W. Gai, “Verification of the

    AWA Photoinjector Beam Parameters Required for a Transverse-to-Longitudinal

    Emittance Exchange Experiment”, Proceedings of the 2009 Particle Accelerator

    Conference (3 pages, in press).

    11. M. M. Rihaoui, P. Piot, J. G. Power, and W. Gai, “Limiting Effects in the

    Transverse-to-Longitudinal Emittance Exchange Technique for Low Energy

    Relativistic Electron Beams”, Proceedings of the 2009 Particle Accelerator

    Conference (3 pages, in press).

    12. S. Biedron and P. Piot, “Summary and highlights of the diagnostics working group

    presented at 2nd Workshop on High Average Power and High Brightness Beams,

    Los Angeles, California, 14-16 Jan 2009. (9 pages, in press) 13. P. Piot, “Alternative lattice options for energy recovery in high-average-power high-

    efficiency free-electron lasers” presented at 2nd Workshop on High Average

    Power and High Brightness Beams, Los Angeles, California, 14-16 Jan 2009. (5

    pages, in press)

    14. P. Piot, D. Mihalcea, C. Hernandez-Garcia, S. Zhang, “Simulation of the upgraded

    injector for the 10 kW Jlab IR-FEL”, Proceedings of the 2008 International Linear

    Accelerator Conference (in press).

    Piot Recommendation for Tenure & Promotion, Part I, page 8

15. Y.-E Sun and P. Piot, “Generation of femtosecond bunch trains using a longitudinal-

    to-transverse phase space manipulation technique”, Proceedings of the 2008

    International Linear Accelerator Conference (LINAC08), pp. 498-500 (2008).

    16. P. N. Ostroumov, K.-J. Kim and P. Piot, “Development of an ultra-low emittance

    injector for future X-ray FEL oscillators”, Proceedings of the 2008 International

    Linear Accelerator Conference (LINAC08), pp. 476-478 (2008).

    17. D. Mihalcea, and P. Piot, “Simulation of field-emission cathodes for high-current

    electron injectors”, Proceedings of the 2008 International Linear Accelerator

    Conference (LINAC08), pp. 652-654 (2008).

    18. D. Mihalcea, and P. Piot, “Analysis of halo formation in a DC photoinjector”,

    Proceedings of the 2008 International Linear Accelerator Conference

    (LINAC08), pp. 645-647 (2008).

    19. N. Vinogradov, P. Piot, C. Prokop, J. Lewellen, and J. Noonan, “Low energy

    photoemission electron source for applications in THz radiation production and time-

    resolved electron microscopy”, Proceedings of the 2008 International Linear

    Accelerator Conference (LINAC08), pp. 554-556 (2008).

    20. P. Piot, “Generation and Control of electron beams”, presented at the Advanced

    Accelerator Concepts workshop (AAC 2008), July 27-August 2, 2008, Santa-Cruz

    [9 pages, preprint-conf-08-345-APC available from Fermilab] (invited plenary talk).

    21. M. Rihaoui, W. Gai, P. Piot, J. G. Power and Y. Zukov, “Observation of transverse

    space charge effects in a multi-beamlet electron bunch produced in a photo-emission

    electron source”, presented at the Advanced Accelerator Concepts workshop

    (AAC 2008), July 27-August 2, 2008, Santa-Cruz [6 pages, preprint-conf-08-351-

    APC available from Fermilab].

    22. T. J. Maxwell, D. Mihalcea, P. Piot, “Diffraction effects in coherent transition

    radiation diagnostic for sub-mm bunch length measurement”, in Proceedings of the

    Beam Instrumentation Workshop 2008 (BIW'08), Lake Tahoe, CA, (4-8 May,

    2008) [4 pages, in print].

    23. R. Legg, W. Graves, T. Grimm, P. Piot, “Half wave injector design for Wisconsin

    free-electron laser”, in Proceedings of the 11th European Particle Accelerator

    Conference (EPAC’08), Magazzini del cotone, Genoa, Italy (23-27 June, 2008) [3

    pages, in print].

    24. M. Church, S. Nagaitsev, P. Piot, “Plans for a 750 MeV electron beam test facility at

    Fermilab”, in Proceedings of the 22nd Particle Accelerator Conference (PAC'07),

    Albuquerque, New Mexico, pp. 2942-2944 (2007).

    25. Y.-E Sun, J. G. Power, K.-J. Kim, P. Piot, M. M. Rihaoui,, “Design study of a

    tranverse-to-longitudinal emittance exchange proof-of-principle”, in Proceedings of

    the 22nd Particle Accelerator Conference (PAC'07), Albuquerque, New Mexico,

    pp. 3441-3443 (2007).

    26. T. J. Maxwell, C. L. Bohn, D. Mihalcea, P. Piot, “Vector diffraction theory and

    coherent transition radiation interferometry in electron linac”, in Proceedings of the

    22nd Particle Accelerator Conference (PAC'07), Albuquerque, New Mexico, pp.

    4015-4017 (2007).

    27. M. Rihaoui, C. L. Bohn, P. Piot, J. G. Power, Impact of transverse irregularities at

    the photocathode on the production of high-charge electron bunches”, in

    Proceedings of the 22nd Particle Accelerator Conference (PAC'07), Albuquerque,

    New Mexico, pp. 4027-4029 (2007).

    28. J. G. Power, M. E. Conde, W. Gai, F. Gao, R. Konecny, W. Liu, Z. Yusof, P. Piot, M.

    Rihaoui, “Pepper-pot based emittance measurement of the AWA photoinjector”, in

    Proceedings of the 22nd Particle Accelerator Conference (PAC'07), Albuquerque,

    New Mexico, pp. 4393-4395 (2007).

    29. M. C. Thomson, H. Badakov, J. B. Rosenzweig, G. Travish, R. Fliller, G. M.

    Kazakevich, P. Piot, J. Santucci, “ Observation of underdense plasma lens focusing

    of relativistic electron beams”, in Proceedings of the 22nd Particle Accelerator

    Conference (PAC'07), Albuquerque, New Mexico, pp. 1907-1909 (2007).

    Piot Recommendation for Tenure & Promotion, Part I, page 9

30. N. Vinogradov, C. L. Bohn, P. Piot, J. W. Lewellen, J. R. Noonan, “Polarized

    pulsed beam source for electronic microscopy”, in Proceedings of the 22nd Particle

    Accelerator Conference (PAC'07), Albuquerque, New Mexico, pp. 3011-3013

    (2007).

    31. J. Lewellen and P. Piot, “Summary of beam quality diagnostics and control working

    group”, in Proceedings of the 12th Advanced Accelerator Concepts Workshop

    (AAC 2006), Lake Geneva, Wisconsin, 10-15 Jul 2006, op. cit. under book chapters.

    32. R. Tikhoplav, G. Kazakevich, D. Mihalcea and P. Piot, “Manipulation of

    photocathode drive laser longitudinal profile”, in Proceedings of the 12th

    Advanced Accelerator Concepts Workshop (AAC 2006), Lake Geneva,

    Wisconsin, 10-15 Jul 2006, op. cit. under book chapters.

    33. M. C. Thomson, , H. Badakov, J. B. Rosenzweig, G. Travish, H. Edwards, R. Fliller,

    G. M. Kazakevich, P. Piot, J. Santucci, J. Li, R. Tikhoplav, “UCLA/FNPL

    underdense plasma lens experiment: Results and analysis”, in Proceedings of the

    12th Advanced Accelerator Concepts Workshop (AAC 2006), Lake Geneva,

    Wisconsin, 10-15 Jul 2006, op. cit. under book chapters.

    34. D. Yu, Y. Luo, A. Smirnov, I. Bazanov, R. Fliller and P. Piot, “ A compact normal-

    conducting polarized electron L-band photoinjector for the ILC”, in Proceedings of

    the International Linear Accelerator Conference (LINAC 06), Knoxville,

    Tennessee, 21-25 August 2006, pp. 376-378 (2006).

    35. P. Piot, Y.-E Sun and K.-J. Kim “Photoinjector production of a flat beam with

    emittance ratio of 100 ”, in Proceedings of the International Linear Accelerator

    Conference (LINAC 06), Knoxville, Tennessee, 21-25 August 2006, pp. 382-384

    (2006).

    36. P. Piot, “Photoinjector R&D for future light sources and linear colliders”, in

    Proceedings of the International Linear Accelerator Conference (LINAC 06),

    Knoxville, Tennessee, 21-25 August 2006, pp 549-553 (2006) (invited plenary talk). 37. D. Yu, Y. Luo, A. Smirnov, I. Bazarov, and P. Piot, “A polarized electron PWT

    photoinjector for the ILC”, in Proceedings of the Second ILC Workshop,

    Snowmass, Colorado, 14-27 August 2005, published in ECONF proceedings Num.

    C0508141:ILCAW0311, and SLAC report R-798, 5 pages (2005). nd ILC accelerator 38. P. Piot, “Alternate design for electron injectors” presented at the 2

    Workshop, August 14-27, 2005, Snowmass CO (2005).

    39. T. Koeth, L. Bellantoni, H. Edwards, and P. Piot. “3.9 GHz Deflecting Cavity as a

    Bunch Length Diagnostics”, in Proceedings of the 12th International Conference

    on rf Superconductivity, Ithaca, New York (10-15 July 2005)

    40. D. Mihalcea, C.L. Bohn, U. Happek, P. Piot, “Longitudinal Electron Bunch

    Diagnostics Using Coherent Transition Radiation”, in Proceeding of the Particle

    Accelerator Conference (PAC 05), Knoxville, Tennessee, 16-20 May 2005, p.

    4254-4256 (2005).

    41. P. Piot, H. Edwards, M. Huning, J. Li, R. Tikhoplav, T. Koeth, “Upgrade of

    FERMILAB/NICADD photoinjector laboratory”, in Proceedings of the Particle

    Accelerator Conference (PAC 05), Knoxville, Tennessee, 16-20 May 2005, p.

    2848-2850 (2005).

    42. P. Piot, M. Dohlus, K. Flottmann, M. Marx, S.G. Wipf “Steering and focusing e_ects

    in TESLA cavity due to high order mode and input couplers”, in Proceeding of the

    Particle Accelerator Conference (PAC 05), Knoxville, Tennessee, 16-20 May

    2005, p. 4135-4137 (2005).

    43. M.C. Thompson, H. Badakov, J.B. Rosenzweig, G. Travish, H. Edwards, R.P. Fliller,

    G.M. Kazakevich, P. Piot, J.K. Santucci, J.L. Li, R. Tikhoplav, “The UCLA/FNPL

    time resolved underdense plasma lens experiment”, in Proceeding of the Particle

    Accelerator Conference (PAC 05), Knoxville, Tennessee, 16-20 May 2005, p.

    3013-3015 (2005).

    44. J. Li, R. Tikhoplav, P. Piot, A. Melissinos, “Production of transverse controllable

    laser density distribution at the FERMILAB/NICADD photoinjector”, in Proceeding

    Piot Recommendation for Tenure & Promotion, Part I, page 10

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