E06-010 / E06-011 Transversity Experiments Overview, Manpower and Safety. Readiness Review, March 19, 2007. Goal of the transversity experiments Requirements of the transversity experiments Collaboration and manpower Safety issues. - PowerPoint PPT Presentation
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E06-010 / E06-011 Transversity Experiments
Overview, Manpower and Safety Readiness Review, March 19, 2007
• Target (talk by Jian-Ping Chen)– 40-cm long Rb-K hybrid polarized 3He target at
10 atm– > 40% target polarization with spin-flip period
of 20 minutes– Third sets of vertical Helmholtz coils and
associated laser opticvs for vertical polarization
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Instrumentation Request for E06-010/E06-011• HRS-L spectrometer (talk by A. Camsonne)
– Momentum range: 0.6-2.4 GeV/c – VDC1, VDC2, S1, Short gas Cherenkov, A1,
S2M, Preshower/shower – RICH for π/K separation (talk by E. Cisbani)
• Bigbite spectrometer (talk by X. Jiang)– Electron detection package– Wire-chamber-2 upgrade (talk by M. Shabestrai)– Gas Cherenkov (talk by B. Sawatzky)– Shielding and collimation
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Hall A Transversity Experiments CollaborationThe Institutions
California State Univ., Duke Univ., Florida International. Univ., Univ. Illinois, JLab, Univ. Kentucky, Univ. Maryland, Univ. Massachusetts, MIT, Old Dominion Univ., Rutgers Univ., Temple Univ., Penn State Univ., Univ. Virginia, College of William & Mary, Univ. Sciences & Tech, China Inst. Of Atomic Energy, Beijing Univ., Seoul National Univ., Univ. Glasgow,
INFN Roma and Univ. Bari, Univ. of Ljubljana, St. Mary’s Univ., Tel Aviv Univ.
A. Afanasev, K. Allada, J. Annand, T. Averett, F. Benmokhtar, W. Bertozzi, F. Butaru, G. Cates, C. Chang, J.-P. Chen* (Co-SP), W. Chen, S. Choi, C. Chudakov, E. Cisbani*(Co-SP), E. Cusanno, R. De Leo, A. Deur, C. Dutta*, D. Dutta, R. Feuerbach, S. Frullani, L. Gamberg,
H. Gao* (Co-SP), F. Garibaldi, S. Gilad, R. Gilman, C. Glashausser, J. Gomez, M. Grosse-Perdekamp, D. Higinbotham, T. Holmstrom, D. Howell, M. Iodice, D. Ireland, J. Jansen, C. de Jager, X. Jiang* (Co-SP), Y. Jiang, M. Jones, R. Kaiser, A. Kalyan*, A. Kelleher, J. Kellie, J.
Kelly, A. Kolarkar, W. Korsch, K. Kramer, E. Kuchina, G. Kumbartzki, L. Lagamba, J. LeRose, R. Lindgren, K. Livingston, N. Liyanage, H. Lu, B. Ma, M. Magliozzi, N. Makins, P. Markowitz, Y. Mao, S. Marrone, W. Melnitchouk, Z.-E. Meziani, R. Michaels, P. Monaghan, S. Nanda, E. Nappi, A. Nathan, V. Nelyubin, B. Norum, K. Paschke, J. C. Peng*(Co-SP), E. Piasetzky, M. Potokar, D. Protopopescu, X. Qian*, Y. Qiang, B. Reitz, R. Ransome, G. Rosner, A. Saha, A.
Sarty, B. Sawatzky, E. Schulte, S. Sirca, K. Slifer, P. Solvignon, V. Sulkosky, P. Ulmer, G. Urciuoli, K. Wang, Y. Wang*, D. Watts, L. Weinstein, B. Wojtsekhowski, H. Yao, H. Ye, Q. Ye,
Y. Ye, J. Yuan, X. Zhan, X. Zheng, S. Zhou, X. Zong
Collaboration members (104 members)
* : Cospokesperson; * : Ph.D students
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Manpower and collaboration responsibilities• 4 Ph.D thesis students stationed at JLab
– Chiranjib Dutta and Allada Kalyan (U. Kentucky)– Xin Qian (Duke U.) and Youcai Wang (UIUC)
• Responsibilities– Duke: Bigbite detector tests, 3He target, simulations– FIU: HRS detectors– JLab: Bigbite, Polarized 3He target, HRS, DAQ– INFN: RICH and HRS-PID– UIUC: HRS aerogel and RICH, vertical coils, Runplan– Rutgers: Bigbite detectors, shielding, trigger and DAQ, Runplan– Temple: Bigbite Cherenkov, 3He target– W&M: Pol 3He target and cells– U. Kenntucky: Bigbite detector, trigger and DAQ, 3He target– U. Virginia:: Bigbite MWDC, 3He target
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Milestones • Polarized 3He target
– New oven for cell testing: April 1, 2007– Vertical coils test: June 1, 2007– Cell production: 10 by July 1, 2007, 20 by Dec. 1, 2007– Laser optics line: Nov. 1, 2007– Complete system test: Nov. 1, 2007– Ready for installation: Jan. 1, 2008
• Bigbite detectors– MWDC-1, MWDC-3 readout check: May 30, 2007– MWDC-2 delivered to JLab: June 10, 2007– Three chambers readout and tracking test: Sept. 1, 2007– Gas Cherenkov detector commissioning with cosmics: Oct. 1, 2007– Integration of MWDC, Cherenkov, Pre/shower: Dec. 1, 2007
– Laser, fire, high pressure cells, electric and magnetic fields, oven, radiation, hot surface
– All safety documents will be updated
– All necessary trainings will be arranged
• We will work closely with the JLab safety officers to ensure that the proper procedures are in place
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Summary• Significant progress has been made in the
preparation for the Hall-A transversity experiments (Details are presented in later talks)
• The responsibilities of the collaborating institutes have been clearly defined. Four Ph.D students on the transversity experiments are stationed at JLab.
• The collaboration anticipates data-taking around March 2008. The first transversity measurement on polarzied 3He target should provide interesting new information on the novel nuclear structure functions and fragmentation function.