Hall B Scientific Staff Bios

Hall B Scientific Staff Bios

Volker D. Burkert

Volker Burkert joined Jefferson Lab in 1985 as staff scientist. He worked initially on the development of the CLAS detector system, where he focused on detectors needed for high luminosity electron beam operation. In 2003 he was appointed head of the Hall B department, where he is leading a team of 40 physicists, engineers and technicians in the implementation and operation of Hall B and its unique CLAS detector system. The research with CLAS focuses on the structure of nucleons and nuclei using electromagnetic beam and polarized targets. In the early 2000 Volker developed the concept of the CLAS12 detector, which is now under construction, and will serve a large program at 12 GeV aimed at spatial and momentum imaging of the nucleon, hadron spectroscopy, and QCD effects in nuclei. Before coming to JLab, Volker received a Ph.D. from Bonn University in 1975, where he subsequently worked as a postdoc and assistant professor studying nucleon excitations, and using polarized deuteron targets. He led the effort to measure the motion of polarized electrons in a synchrotron for use in electron scattering experiments. From 1979-1982 he worked at CERN on hard scattering processes that resulted in the first determination of the proton's gluon structure function. He is author of over 200 publications in refereed journals, contributed chapters in books, and was elected Fellow of the APS in 2004. He is serving as referee for physics journals and for research funding.

Harut Avagyan

Harut Avagyan graduated from Yerevan State University in 1980, and received his Ph.D. in Nuclear Physics in 1986 from Yerevan Physics Institute. 1986-1993 worked in Yerevan Physics Institute as junior, then senior staff scientist. In 1993, he joined the INFN Frascati Lab and HERMES experiment. He introduced the subject of single-spin asymmetries to the HERMES analysis and was responsible for coordinating the analysis of single-spin asymmetries (SSA). He came to Jefferson Lab in 2001 as a Hall B postdoctoral research associate. The main area of his work at JLab is the study of the orbital motion of quarks and in particular the observation and interpretation of SSA in electroproduction. Currently, Harut Avagyan is a staff scientist III at Hall B. He has authored more than 100 publications in refereed journals. For pioneering studies of SSAs in electroproduction of hadrons in deep inelastic scattering, providing access to orbital motion of quarks, he was elected APS Fellow in 2011. In the course of his work, he has proposed ideas for experiments, and has coordinated collaborators from across the world to produce a complete program for studies of the 3D structure of nucleon at the JLab 12 GeV Upgrade. During his years in Jefferson Lab, Harut Avagyan has organized a number of international conferences, workshops and schools to promote the JLab12 program on 3D structure of the nucleon. He also mentors doctoral candidates and college students.

Christopher Bass

Christopher Bass attended Indiana University and graduated in 1999 with a major in physics and a minor in mathematics. He attended graduate school at Indiana University, graduating with a Ph.D. in Physics with concentrations in Nuclear and Mathematical Physics in February 2008. His research on hadronic weak interactions was completed at the NIST Center for Neutron Research (NCNR) in Gaithersburg, Maryland. He was awarded the Indiana University 2008 Outstanding Graduate Student Researcher in Experimental Physics. Christopher then worked as a National Research Council Postdoctoral Research Fellow at the NCNR from 2008 to 2010. In 2010, Christopher joined Jefferson Lab as a staff scientist. In the course of his work at Jefferson Lab, he has worked on cryogenic and polarized targets, and commissioned and ran experiments. In 2013, Christopher accepted a faculty position in the Physics Department at Le Moyne College in Syracuse, New York.

Vitaly Baturin (Batourine)

Vitaly Baturin (Batourine) is a staff scientist at JLab. He is leading the CTOF project of the Hall B 12GeV Upgrade program. Vitaly graduated from the Leningrad State University and was admitted at the Nuclear Physics Institute in 1976 where he specialized in high energy nuclear reactions, muon catalized fusion, pion-nucleon and nucleon-nucleon interactions, and nuclear muon capture. In 1992 he was awarded the degree of Candidate in Physics and Mathematics at the Russian Academy of Science. From 1989 to 1994 he studied Muon Catalyzed Fusion at PSI in Switzerland and implemented the Highly Pressurized Ionization Chamber. From 1993 to 1996 he worked at INFN leading the R&D for the Vertex Straw Detector for KLOE. In 1997 he was invited to Penn State University in the US where he participated in experiment E850 at BNL, which was successfully completed in 1999. From 1999 to 2006 Vitaly worked on hadron physics with electromagnetic probes first at the HERMES experiment at DESY, later at KNU (South Korea) as a Research Scientist with the CLAS Collaboration at JLab. Before joining Jefferson Lab in 2007 Vitaly spent one year at UCLA working with the A2 collaboration at MAMI. He has authored over 90 publications in refereed journals.

Sergey Boyarinov

Sergey Boyarinov attended the Moscow Engineer and Physics Institute in Russia and graduated in 1984 with a master degree in nuclear physics. He worked as engineer and scientist in the Institute of Theoretical and Experimental Physics (ITEP) in Moscow, Russia, where he took part in the cumulative particle production program at the 10 GeV accelerator. He received his Ph.D. in nuclear physics in 1992. In the same year Sergey was involved in the SSC collaboration doing simulation for the GEM Forward Calorimeter. In 1993 he started to work at Jefferson Lab as visiting scientist in Hall B, participating in offline software and data acquisition system development, construction and commissioning. In 2000, Sergey joined Jefferson Lab as a staff scientist. In the course of his work, he was responsible for running the Hall B data acquisition system for all experiments until the CLAS detector shutdown in 2012. He worked closely with the run coordinators to achieve the required performance goals. During those years, Sergey implemented several DAQ system upgrades increasing system performance to meet experiment requirements. He has over 100 publications, and currently is leading an effort to construct the CLAS12 data acquisition and trigger system.

Daniel S. Carman

Daniel S. Carman received his B.S. (with honors) in physics in 1988 from Rensselaer Polytechnic Institute. He attended graduate school at Indiana University and completed his Ph.D. in 1995 on studies of N-N quasifree scattering at IUCF. From 1995 to 1999 he was a postdoctoral associate in the medium energy group at Carnegie Mellon University. During this time he focused on studies of hypernuclei at the AGS at Brookhaven National Laboratory. At this time he also began his involvement at Jefferson Laboratory. His primary responsibilities included working on the Hall B Region 1 drift chambers and commissioning the full drift chamber system. He also developed a research program primarily focusing on strangeness electroproduction. In 1999 he took a tenure track faculty position in physics at Ohio University, where his research program focused on work in both Hall B and Hall D at Jefferson Lab. He was supported by research grants from the National Science Foundation and was awarded tenure in 2004. In 2006 he took a staff scientist position in Hall B. He has been the group leader for the Hall B Time-of-Flight system for both the CLAS detector and the CLAS12 detector upgrade project. He also served as the group leader for the Hall D Forward Drift Chamber system from 2002 to 2010. He has mentored many graduate students and postdoctoral physicists. He has authored more than 140 papers in refereed journals and has been a lead author on nearly 20 papers. He served on the Hall D Collaboration Board from 2005-2006 and on the JLab User's Group Board of Directors in 2010-2011.

Alexandre Deur

Alexandre Deur attended Blaise Pascal University (France) and graduated summa cum laude in October 2000 with a Ph.D. in Nuclear Physics. From 2000 to 2003 he served, first as a postdoctoral research associate and then a research scientist, at the University of Virginia working on experiments at SLAC and Jefferson Lab. He joined Jefferson Lab in January 2004 as a staff scientist. His research focus is on the spin structure of the nucleon and on quark confinement. He is a specialist on polarized targets, particularly 3He and Hydrogen-Deuteride targets and on target and beam polarimetry. He is the official supervisor of a Ph.D. student from Blaise Pascal University working at JLab on polarized targets. He is spokesperson of four Jefferson Lab experiments and has served regularly as coordinator during the experimental runs. Alexandre has over 130 articles published in refereed journals in the fields of Nuclear Physics, Particle Physics and Astrophysics. The publications span from phenomenological/theoretical work, to development of experimental equipment. He has initiated several original works on the extraction and interpretation of the strength of QCD at large distance, on investigating parallels between QCD and gravity and its implication to dark matter and dark energy.

Latifa Elouadrhiri

Latifa Elouadrhiri is a Senior Staff Scientist in Hall B. She received her Ph.D. from the University of Clermont- Ferrand (France) in 1992 for research on the nucleon axial form factor. She came to Jefferson Lab in a joint position with JLab/CNU in 1994, and joined the Hall B staff in 2001. Latifa was part of a small group that led the pioneering CLAS paper on the first observation of electron beam asymmetries in polarized exclusive deeply virtual Compton scattering (DVCS). Prior to coming to JLab Latifa performed experiments at Saclay (France) and PSI (Switzerland). Since 2005 Latifa has been the Control Account Manager for the Hall B 12 GeV Upgrade that includes all detectors and magnets for the CLAS12 system. She is a member of the APS Division of Nuclear Physics and was elected APS Fellow in 2011. She has served as member of Nuclear Science Advisory Committee (NSAC), Committee of Visitors (COV). She also served on review panels for funding proposals submitted to the German Research Association (DFG). She also served as member on several Ph.D. thesis committees. She is the contact person and spokesperson of DVCS experiments to study the Generalized Parton Distributions (GPDs) program with the CLAS12 detector.

Robert Fersch

Robert Fersch graduated from the University of Delaware in 1996 with a major in physics education, and after 5 years in secondary science education, attended graduate school at the College of William and Mary, where he was involved in research at Jefferson Laboratory, primarily in the measurement of spin structure functions in the EG1 inclusive electron-proton scattering data from the CLAS detector in Experimental Hall B. Upon completion of his Ph.D. in 2008, he did postdoctoral research in the spin physics of protons at the University of Kentucky as part of the STAR Collaboration at Brookhaven National Laboratory. In 2011 he accepted a faculty position teaching physics at Christopher Newport University, and is beginning involvement in software development for the future CLAS12 detector in Hall-B.

Francois-Xavier Girod

Francois-Xavier Girod completed Ecole Nationale Superieure de Physique de Strasbourg (France) in 2003 with a major in Physics and Modeling and a minor in Photonics and Lasers. As a student at the Subatomic Research Center CNRS/IN2P3 (Louis Pasteur University), he joined the CEA Saclay group on Nucleon Structure to obtain in 2006 his Ph.D. entitled Deeply Virtual Compton Scattering with the CLAS detector for a study of Generalized Parton Distributions. He then came to Jefferson Laboratory for his postdoctoral research appointment in Hall-B to pursue this program of 3-dimensional nucleon imaging with exclusive and semi-inclusive reactions. During this time, he was more particularly responsible for the maintenance and operation of the calorimeters. In 2011, he joined Hall-B as a staff member, and took responsibility for the upgrade of the beamline. He is a spokesperson for an experiment extending 3-dimensional imaging studies to nuclei (Helium), and for a 12 GeV φ meson exclusive measurement of gluonic radius in the valence region. He also serves as a member of the executive committee for the Heavy Photon Search collaboration.

David Heddle

David Heddle received his Ph.D. in physics in 1984 from Carnegie Mellon University under Professor Leonard Kisslinger. His dissertation was in nuclear theory; he calculated hypernuclear decay rates in a quark model. He was a postdoctoral associate at the University of Maryland and a research physicist at the Nuclear Physics Laboratory at the University of Illinois at Urbana-Champaign where he switched his focus from nuclear theory to accelerator physics under the supervision of Larry Cardman. He came to JLab in 1989 through a joint appointment with Christopher Newport University. After some work in accelerator physics at JLab, primarily in designing a Wien Filter for rotating polarized electrons, he joined the Physics Division and Hall B. His contributions in Hall B have been in a variety of software efforts, including visualization, noise finding, and service oriented architecture. From 2011 until May of 2013 he was the chair of the Mathematics Department at CNU.

Yuri Gotra

Yuri Gotra is a Staff Scientist in Hall B and the technical project leader for the SVT. He received his M.S. in Physics from The Moscow State University and his Ph.D. in Nuclear Physics from Joint Institute for Nuclear Research, Dubna, Russia in 2004. He was a post-doctoral research associate at University of Pittsburgh and later a Scientist at Rochester University before coming to JLab in 2011. He has performed experiments at JINR, INFN, FNAL, and CERN. He has contributed to the development, construction, and operation of SVXII and CMS Silicon Trackers and B physics analysis at CDF, Fermilab during Run II. At JLab he has contributed to the development of the Hall B Silicon Vertex Tracker for the CLAS12 detector.

Tsuneo Kageya

Tsuneo Kageya performed his research for his Ph.D. at Tokyo Metropolitian University in Japan analyzing data from the bubble chamber experiments at CERN. The research aimed to study the hadronization mechanism of pions in proton-proton collisions at high energy. Since then, he has been involved in experiments to explore the hadron structure, especially the spin structure of nucleons during the last 20 years. He has actively participated in experiments at Spin Muon Collaboration at CERN which confirmed the Spin Crisis, and the first GDH sum rule experiment at Mainz. He has also worked at Dubna and Protvino in Russia in studies of the proton, neutron or and deuteron spin structures using polarized beams and targets. Tsuneo has been developing polarized nucleon targets; polarized thin-polyethylene film target for polarized fusion experiments in Japan, the ultra-cold polarized hydrogen gas jet target for higher density at the university of Michigan and polarized solid HD target for GDH experiments at BNL and most recently for the g14 experiments in the Hall-B at Jefferson Lab. For the 12 GeV programs at JLab, he is particularly interested in measurements of the generalized parton distribution that will further elucidate the spin structure of nucleons in 3D imaging.

Valery Kubarovsky

Valery Kubarovsky joined Jefferson Lab in 2007 as Hall-B scientist and adjunct professor of physics at Rensselaer Polytechnic Institute. At JLab he served as a spokesperson on a number of the photoproduction and electroproduction experiments. He was involved in several large hardware projects employing Cherenkov counters, electromagnetic calorimeters, magnetic spectrometers, data acquisition systems and trigger developments. Valery received his Ph.D. from the Institute for High Energy Physics in 1977 after graduation from the Moscow Institute for Physics and Technology - the top Russian University for research scientists. He holds the degree of Doctor of Science in experimental high-energy physics (approximately equivalent to Full Professor of Physics in USA). Before coming to JLab he performed particle and nuclear physics research at Fermi National Accelerator Laboratory, CERN, Brookhaven National Laboratory, and IHEP (Russia). Valery has close connections with JLab associated Universities and mentors doctoral candidates, college students and postdocs in the field of experimental nuclear physics. Valery contributes to the CLAS upgrade and is the Hall B lead of the Ring Imaging Cherenkov detector project and participates in the design of the HTCC. He is spokesperson of several experiments with CLAS12. Valery authored more than 160 papers in refereed journals.

Michael Lowry

Michael Lowry attended the University of Illinois and graduated in 1972 with a BS in physics. He attended graduate school at the California Institute of Technology, obtaining a Ph.D. in Nuclear Physics in 1979. At Princeton University from 1978 to 1994, he held successive positions of Instructor, Assistant Professor and Research Physicist. In 1995, he moved to Brookhaven National Laboratory as Associate Physicist, rising to full Physicist in 1998. He transferred to Jefferson Laboratory in 2007 as a Hall B Scientist. His research interests began with low energy nuclear physics for astrophysics, then parity violation, beta decay, and neutrino physics, culminating in his work on the Sudbury Neutrino Observatory, proposing and developing procedures for salt extraction. In parallel he pioneered work on cryogenic micro-calorimeters for beta decay studies. Since joining the polarized HD target group, he has been instrumental in designing, producing, and operating the various specialized apparati and in gaining theoretical understanding of the HD polarization and target physics.

Mac Mestayer

Mac Mestayer is a senior staff experimental physicist working at Jefferson Lab, a national accelerator center for nuclear physics. He obtained his Ph.D. from Stanford University, and did post-doctoral work at the University of Chicago and Vanderbilt University. In his 30-year career he has worked at four national laboratories, from SLAC to Fermilab to CLEO (Cornell) to Jefferson Lab, and he has worked with teams from many universities and labs in software, hardware, and research consortia. At Jefferson Lab he has responsibility for the design, construction and commissioning of the particle tracking system for the CLAS detector. His research focus is to understand the quark structure of baryons and the dynamical aspects of the quark anti-quark pair-production process. He has published and spoken widely on the important findings and research needs in his field, for audiences at either the expert or novice level. His outside areas of national interest include energy and water supply conservation.

Victor Mokeev

Victor Mokeev attended the Physics Department at Moscow State University (Russia) and graduated in 1978 with the Master of Science degree and with Ph.D. in Nuclear Physics in 1981. He was awarded the Doctor of Science degree from the Russian Federation Government in 2009. Dr. Mokeev joined Jefferson Lab in 2003 as staff Scientist. He developed the only available approach worldwide for the extraction of γvNN* couplings from exclusive π+π-p electroproduction data on protons, which allowed the extraction of electrocouplings of the P11(1440) and D13(1520) resonances from this exclusive channel for the first time. Preliminary results on electrocouplings of prominent N* states with masses up to 1.8 GeV have become available. Also, evidence for a new state with JP=3/2+ at a mass of 1720 MeV was observed. Dr. Mokeev is spokesperson for the experiment on N* structure studies at high photon virtuality, using the CLAS12 detector. He organizes and supervises research activities of several visiting scientists from MSU. Dr. Mokeev served in the editorial board for the 2013 review paper "Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction", as well as in several organizing committees for international Workshops on N* Physics. He is organizer of joint meetings between the JLab Theory Center and JLab experimentalists at with the goal to develop QCD-based theoretical interpretation of the results on γvNN* electrocouplings.

Kijun Park

Kijun Park attended the Kyungpook National University and graduated 1998 with a major in physics and minor in educations. He attended graduate school at the Kyungpook National University, graduating with a Ph.D. in Experimental Nuclear Physics in June 2006. He joined the CLAS project in JLab as an undergraduate and has been working continuously on CLAS experiments as a term member of the collaboration. His Ph.D. work was carried out with the first 6-GeV experimental data from CLAS. He was awarded the title Promising Young Physicist in 2011 and gave a seminar at the College of William and Mary in VA. Kijun then served as a postdoctoral research associate at the University of South Carolina from 2005 - 2009, during which time he was stationed at the USC campus in Columbia, South Carolina. In 2009, Kijun joined Jefferson Lab as a postdoctoral researcher, where he studied charged meson production at high momentum transfer. He has over 100 publications including 15 papers as the first author or lead group author in refereed journals such as Phys. Rev. C, Eur. Phys. J. A, and in published proceedings of international conferences. In the course of his work, he carried out a variety of physics analysis and detector maintenance projects. During his tenure as a USC postdoctoral researcher, he mentored several graduated students, guiding them in terms of physics analysis and detector techniques.

Eugene Pasyuk

Eugene Pasyuk graduated from Moscow Engineering Physics institute in 1977. He started his research career at Joint Institute for Nuclear Research (JINR) in Dubna first as research associate, then research scientist and then group leader. The main focus of the research then was reactions with medium energy pions, pion-nucleon scattering, pion-nucleus scattering and absorption, pion production by protons and heavy ions. Experiments were performed at JINR, PNPI (Gatchina) and later on at LAMPF and LANSCE (Los Alamos). In 1999 Eugene joined ASU as a research professor and his research activity moved to the experimental Hall B of Jefferson laboratory. He became the primary person responsible for the photon tagging spectrometer and supported all Hall B experiments with real photon beams. Being at Jefferson Lab, Eugene mentored all graduate students from ASU while they were in residence here. He later assumed a leading role in implementation of new photoproduction experiments with polarized photons and polarized target. This included construction of the frozen spin target (FROST). There were two 4-5 months long periods of data taking and Eugene served as a primary coordinator of this run around the clock. In 2010 Eugene joined Jefferson laboratory as a staff scientist. He has authored over 120 publications in refereed journals. Eugene served as a chair of the Hadron Spectroscopy working group of the CLAS Collaboration.

Andrew Puckett

Andrew Puckett has been involved in the physics program of Jefferson Lab since 2002, when he became an undergraduate research assistant at the University of Virginia, from which he earned a B.S. in physics with highest distinction in 2004. He then attended graduate school at MIT from 2004-2009, performing his dissertation research on polarization transfer measurements of the proton electric/magnetic form factor ratio at large momentum transfers in JLab Hall C, for which he was awarded the 2009 JSA/JLab thesis prize. In October 2009, Andrew received his Ph.D. from MIT. From 2009-2011, Andrew was a DirectorÕs Postdoctoral Fellow at Los Alamos National Laboratory (LANL), where his primary research focus was the analysis of data from JLab Hall A experiment E06-010 (transversity) studying the transverse spin structure of the neutron. During his postdoctoral fellowship, Andrew also developed and successfully defended a proposal to improve upon these studies using the upgraded 11 GeV CEBAF beam at JLab PAC38. Since January 2012, Andrew has been a staff scientist in the Hall B group at JLab, where his primary responsibility has been the construction of the High Threshold Cherenkov Counter (HTCC) for the CLAS12 spectrometer. Andrew's research is focused on the study of nucleon structure in high-energy electron-nucleon scattering.

Andrew Sandorfi

Andrew Sandorfi received his Ph.D. from the University of Toronto in 1976. As a National Research Council (Canada) Fellow, he carried out postdoctoral work at Brookhaven National Laboratory (BNL) and at the High Energy Physics Lab in Stanford University. In 1979 he joined the BNL Physics Department and became a tenured Physicist in 1985. In 1984 he formed a group to construct the Laser-Electron-Gamma-Source (LEGS), a medium-energy polarized gamma-ray beam facility at the National Synchrotron Light Source at BNL. He served as the LEGS group leader throughout the running period of the facility, until 2007. He has been a Fellow of the American Physical Society since 1985, and became a BNL Senior Scientist in 1992. In 1995 he organized a project to develop a new class of Hydrogen-Deuteride (HD) polarized solid targets, which were subsequently used at LEGS. In 2008, he transferred to Jefferson Lab and joined the Hall B staff as a Senior Scientist. At JLab, he was the co-spokesman for the E06-101/g14 experiment with polarized HD. His research has included nuclear structure, heavy-ion and radiative-capture reactions, electro- and photo-production reactions. He has mentored many graduate students and postdoctoral physicists. He has served on Program Advisory and Review Committees for JLab, RCNP-Osaka, GRAAL-ESRF. He has authored over 70 publications in refereed journals, as well as chapters in Encyclopedias and reference texts.

Youri Sharabian

Youri Sharabian attended Tbilisi State University, Georgia and graduated in 1971 with a major in Nuclear Physics. After graduation he started his scientific career at Yerevan Physics Institute as a research scientist. Youri has received a Ph.D. degree in Elementary Particles and Nuclear Physics at Yerevan Physics Institute in April 1981. He did postdoctoral research with the same institution and as a group leader participated in number of experiments on Yerevan Electron Synchrotron. These experiments were dedicated to study properties of nuclear matter at high energies. Since 1984 Youri served as a senior research scientist at YerPhI. He has been deeply involved in the investigations of (e,e'p) quasielastic processes at low momentum transfer. The experiments were utilized to get detailed information on possible nuclear medium modification, on properties of short-range nucleon correlations and on non-nucleon degrees of freedom in nuclei. Since 1992 he is essentially involved in the CLAS Collaboration. In 2000, Youri joined Jefferson Lab as a staff scientist. In the course of his work, he proposes ideas to build and commission the unique equipment for CLAS experiments. He has over 150 publications. Youri has developed several new detector systems, monitors, and developed other projects resulting in the construction of novel hardware equipment that have become a part of the standard configuration for CLAS and CLAS12 experiments.

Stepan Stepanyan

Stepan Stepanyan joined Jefferson Lab in 2003 as a Hall B staff scientist. Stepan graduated from Yerevan State University (Armenia) in 1979 and received his Ph.D. in 1995 at the Yerevan Physics Institute. He began his research at JLAB in 1989 as a member of the Yerevan Physics Institute - CEBAF collaboration. He participated in the development of the physics program and in the design and construction of the CEBAF Large Acceptance Spectrometer (CLAS). As a visiting scientist at JLab, from 1997 through 1999 Stepan participated in the commissioning and in early experiments at CLAS. From 2000 to 2003 he was appointed as a research associate first in Christopher Newport University, then in Old Dominion University. In 2001 he carried out pioneering work on the first observation of Deeply Virtual Compton Scattering with polarized electrons. He has performed experiments at Yerevan synchrotron and at JLab, serving as co-spokesperson on a number of these experiments. In the course of his work, he coordinates research activities of collaborators from across the world. Stepan served as a mentor for many graduate and undergraduate students. He has been guest lecturer at Hampton University Graduate Studies (HUGS) summer school. He has authored more than 100 papers published in refereed journals.

Maurizio Ungaro

Maurizio Ungaro received a bachelor's degree in physics in 1999 from the University of Genoa Italy. He received a Ph.D in Nuclear Physics in 2004 from the Rensselaer Polytechnic Institute following an M.S. from the same institute. His thesis work on the N → Δ(1232) transition culminated is a top-cited PRL article. Prior to joining Jefferson Lab in 2011, Maurizio had been a postdoctoral fellow and research associate at University of Connecticut, where he performed experiments at Spring-8, Japan and in Hall-B and Hall-C at Jefferson Lab. At Jefferson Lab, his research focus is on the internal structure and dynamics of the nucleon and the transition between hadronic and partonic degrees of freedom. Maurizio has played a crucial role in the Two Photon Exchange experiment (the first to produce a simultaneous electron and positron beam on target) and is an active member of the Heavy Photon Search collaboration between JLab and SLAC hunting for dark matter. He supervises the refurbishment of the Low Threshold Cerenkov Counter detector for the CLAS12 upgrade and is the author of the CLAS12 detectors simulation. He also serves as a co-advisor for Physics Ph.D. students, supervises the research of undergrad students and has more than 100 publications in refereed journals to his credit.

Xiangdong Wei

Xiangdong Wei attended the Peking University and graduated in 1982 majoring in astrophysics. After teaching general physics for six years in China, he attended graduate school at the Syracuse University in Syracuse, NY, earning his Ph.D. in Condensed Matter/Polarized Target Physics in December 1994. His early research focused on sub-millimeter HD and D2 targets for Inertial Confined Fusion (ICF) and large (~1 mole) frozen-spin polarized Hydrogen-Deuteride (HD) targets for nuclear physics measurements with photon beams. From 1995 to 1998, he served as a Postdoctoral Research Associate at the Syracuse University, developing the polarized HD target for use at the Laser-Electron-Gamma-Source (LEGS) at Brookhaven National Lab (BNL). He joined the BNL staff as an Assistant Physicist in the LEGS group in 1998 and was subsequently promoted to Associate Physicist in 2000 and Physicist in 2003. In 2008, he came to Jefferson Lab as a Staff Scientist in Hall B. He has been a leading figure in the polarized HD target research, both at BNL and now at Jefferson Lab, and has mentored graduate students and postdoctoral associates in low temperature polarized target-related research. In addition to nuclear physics, his research areas cover NMR spectrometry, superconducting magnets and cryogenic systems, particularly dilution refrigerators. He has authored over 50 scientific papers.

Dennis Weygand

Dennis Weygand came to Jefferson Lab in 1997 as a Hall B staff scientist with responsibility for Offline software development. He received his Ph.D. from Syracuse University in 1979, his doctoral thesis was a search for associated production of charm in hadronic interactions. He did postdoctoral research at Brookhaven National Laboratory (BNL) working on experiments in hadron spectroscopy at the BNL AGS as well as the ISR at CERN. He became a staff scientist at BNL in 1982. He was the System Architect of the control system Heavy Ion Beam transport line at BNL, and in 1989 became part of the E852 Experiment at the AGS. Dr. Weygand was the co-author of the BNL Partial Wave Analysis program. E852 was a search for exotic mesons, and culminated in the discovery of the π1(1600), a JPC exotic meson. At the Jefferson Lab CLAS detector, Dr. Weygand has been a spokesman of several experiments, including searches for nuclear medium modification of mesons, as well as searches for exotic particle production with photon beams. He mentored doctoral candidates from a variety of collaborating institutions, as well as undergraduate students from nearby universities. Dr. Weygand currently has adjunct appointments at several JLab associated Universities and previously has had appointments at Vanderbilt University, University of Massachusetts Amherst, and the University of South Carolina. Dennis authored over 160 publications in refereed journals.

Amrit Yegneswaran

Amrit Yegneswaran came to Jefferson Lab in 1989 as a Hall B scientist. At JLab he has been involved in CLAS 6 installation projects, and has worked with electronics and instrumentation for the drift chamber and the superconducting torus magnet; at present he works on the silicon vertex tracker for the CLAS 12 upgrade. As a CLAS collaborator he has participated in several experiments and is listed in papers as a participant in the category CLAS Collaboration. He has mentored high school students and has been the local adviser for undergraduate and graduate students. Amrit received his Ph.D. from Northwestern University in 1988. His thesis experiment and postdoctoral research was done at LBNL at Berkeley. As a graduate student he worked at Fermilab, Illinois and at LBNL, Berkeley. Amrit received his Diplom in physics from R.W.T.H Aachen, Germany on research carried out at the Kernforschungsanlage in Juelich, Germany. Amrit has also worked in the nuclear instrumentation group at Interatom, Bensberg, Germany. He has been an adjunct professor at Christopher Newport University in the Department of Physics and Mathematics from 1995 to present.

Veronique Ziegler

Veronique Ziegler came to Jefferson Lab in November 2011 as a Hall B staff scientist. Veronique was a Post-doctoral Research Associate at SLAC National Accelerator Lab, from 2007 to 2011. She graduated from the Ph.D. program in Experimental High Energy at the University of Iowa in 2011. Her doctoral thesis contributed to the area of baryon spectroscopy. She received the D.C. Spriestersbach Dissertation Prize for 2008 in Mathematics, Physical Sciences and Engineering for her work. Prior to joining the CLAS12 experiment at Jefferson Lab, she worked at the BaBar experiment at SLAC. Her postdoctoral work contributed to several Dalitz plot analyses, the discovery of the ηb resonance and first evidence of the hb(1P) state of Bottomonium in its rare π0 transition from Υ(3S) decay. She served as co-convener of the BaBar Quarkonium Analysis Working Group from 2009 until 2011, when she joined Hall B. She is a lead author in 10 papers published in refereed journals and a contributing author in over 400 publications. Her current responsibilities as a staff scientist working in Hall B at Jefferson Lab consist of the development of event reconstruction algorithms and software for the CLAS12 experiment. She also serves as analysis coordinator for CLAS12.

Last modified: June 14, 2013
Daniel S. Carman