1 / 16

Overview of SoLID

Overview of SoLID. Jian-ping Chen, JLab SoLID Collaboration Meeting July 9-10, 2014. Outstanding Physics for SoLID. SoLID : large acceptance, capable of handling high luminosity (up to~10 39 with baffle, up to ~10 37 without baffle)

randall-schmidt
Télécharger la présentation

Overview of SoLID

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Overview of SoLID Jian-ping Chen, JLab SoLID Collaboration Meeting July 9-10, 2014

  2. Outstanding Physics for SoLID • SoLID: large acceptance, capable of handling high luminosity • (up to~1039 with baffle, up to ~1037 without baffle) • Ideal for precision Inclusive-DIS (PVDIS) and SIDIS experiments • Good for certain exclusive reactions • Five Approved Experiments: 4 “A” rating, 1 “A-” rating • SIDIS: E12-10-006 T Polarized n (3He), 90 days • E12-11-007 L polarized n (3He), 35 days • E12-11-108 T polarized p (NH3), 120 days (Haiyan’s talk) • PVDIS: E12-10-007, LD2/LH2, 169 days, (Paul’s talk) • Threshold J/y: E12-12-006, LH2, 60 days, (Zein-Eddine’s talk) • New Proposals: (to be reviewed tomorrow) • di-hadron: parasitic to E12-10-006 • A_y: parasitic to E12-10-006/E12-11-108 • EMC-PVDIS: new beam time 71 days on 48Ca

  3. SoLID- SIDIS Configuration EM Calorimeter (forward angle) EM Calorimeter (large angle) MRPC GEM Target Collmator CLEO II Coil and Yoke Light Gas Cherenkov Heavy Gas Cherenkov

  4. SoLID- PVDIS Configuration EM Calorimeter (forward angle) Cherenkov GEM Baffle Target GEM CLEO II Coil and Yoke

  5. SoLID Base Equipment • Solenoid Magnet: CLEOII magnet with modifications • EM Calorimeter: particle identification, mainly electron PID • SIDIS forward + Large-angle • PVDIS forward only • Light Gas Cherenkov: electron PID • Heavy Gas Cherenkov: hadron (pion) PID, only for SIDIS • Baffles: reduce background, only for PVDIS • Data Acquisition: Hall D developed pipeline DAQ system • Supporting Structure for magnet and detectors • Infrastructure • Dependencies: • GEM detectors: tracking, to be provided by Chinese Collaboration • MRPC: TOF for hadron (pion) PID, only for SIDIS, detector to be provided by Chinese Collaboration; readout electronics: joint. • DAQ: FADC from JLab Physics Division electronics pool • Magnet: disassembling/transportation, initial refurbishing by JLab • Beamline: standard instrumentation operational.

  6. Experiment-Specific Dependencies • Standard or will be available instrumentation: • SIDIS(n): T/L polarized 3He target, standard/achieved performance • J/y: LH2 target, standard, modification in configuration • PVDIS: Compton and Moller polarimeters • required by MOLLOR and PREX • Equipment needs addition resource: • PVDIS: custom high-power cryotarget, ESR2 assumed available • (required by MOLLER) • SIDIS(p): T polarized NH3 target

  7. Technical Requirements and Setup (I) • 1)Magnet: OD=3m, ID=1m, L> 3m. Bmax>1.35 T, BdL=5 T m. • acceptance: f ~ 2p, q : 8o-24o (SIDIS) / 22o-35o (PVDIS), P: 1-7 GeV • resolution: dp/p ~ 2% (requires 0.1 mm tracking resolution) • fringe field at the front end < 5 Gauss • 2)GEM: 6 planes (SIDIS), 5 planes (PVDIS), area ~ 37 m2, 165K ch’s, • tracking eff > 90%, radial r resolution 0.1 mm • high rate and high radiation environment • 3)EM Calorimeter:Shashlyk sampling (leadscintillator/fiber) • calorimeter • 1800 preshower(2 RL) and 1800 module shower (18 RL) • module area=100 cm2, • 300 scientillator pedal detector (SPD) (5mm) in front. • Resolution ~ 10%/SQRT(E) • p suppression 50:1 with electron eff >90% • 5:1 photo suppression • Radiation hard (<20% decreasing in gain after 400KRad) • Trigger rate < 600 KHz (20KHz/sector) (EC+LG Cherenkov)

  8. Technical Requirements and Setup (II) • 4) Light Gas Cherenkov: SIDIS: 2 m, CO2 • PVDIS: 1 m, C4F8O(65%)/N2(35%) • 60 mirrors, 270 PMTs, area=20 m2 • # photoelectrons > 10, eff(e) > 90% • p suppression > 500:1, for P < 4 GeV (SIDIS) / 3.2 GeV (PVDIS) • works @ field up to 200 G (100 G after m-metal shielding) • 5) Heavy Gas Cherenkov: 1m, 1.5 atm C4F8O • 30 mirrors, 480 PMTs, area=20 m2 (active 8.5 m2) • # photoelectrons > 10, eff(p) > 90% • Ksuppression > 10:1 for P: 2.5-7.5 GeV • works @ field up to 200 G (100 G after m-metal shielding) • 6) MRPC: 50 super-modules, each 3 modules, 1650 strips, 3300 ch’s • area=10 m2, time resolustion > 100 ps • K suppression ~ 20:1 for P< 2.5 GeV • photo suppression > 10:1 • works at high rate up to 10 KHz/cm2

  9. Trigger Rates for SIDIS • SIDIS: DAQ can handle ~ 100 KHz (with event size of 2.6 KB) • Single “electron” trigger (defined by EC+LGC+SPD+MRPC) • rates ~ 160 KHz • Single “p” trigger rates (defined by EC*+SPD+MRPC) • rates ~ 14 MHz • SIDIS physics rates ~ 4 KHz • Accidental coincidence rate ~ 65 KHz (30 ns window) • Total ep coincidence rate ~ 70 KHz • Trigger: 70 KHz (coincidence) + up to 30 KHz for prescaled singles

  10. Progress and Status • Conceptual design: extensive work since the full approval of SIDIS and PVDIS proposals in 2012. • Strong Chinese collaboration, anticipated significant contributions • Simple simulations  full simulations with realistic background • Focused R&D activities to validate and finalize the conceptual design for each subsystem • CLEO Magnet: JLab management finalized agreement with CLEO with DOE approval; recent CLEO site visit • Several internal reviews: two brainstorming session (Physics Division) and one informal external review (dry run) • 1st draft pCDR submitted to Physics Division end of 2013 • Iterations on manpower/cost. Help from Division and Project office. • Used Hall D actual expenditure of similar equipment • (magnet/detectors/installation) as base for manpower/cost estimation • pCDR submitted to JLab management yesterday!

  11. SoLID Organization Structure

  12. Executive Board and Chair Function: The Executive Board makes decisions on scientific and organizational choices and provide high level oversight on all matter pertaining to preparation and operation of the SoLID project. The Chair of EB is the science leader and the principle contact between the collaboration and the lab management/DOE. Will provide oversight and input to the PM for the SoLID project. The chair, together with the PM, is responsible for the performance and assessment of all subsystems. Initial members are the senior spokespeople plus the Hall leader (ex-officio) and the PM (ex-officio). Paul Souder (PVDIS), Haiyan Gao (SIDIS), Zein-Eddine Meziani (J/Psi), Thia Keppel (Hall Leader, ex-officio) and Jian-ping Chen (PM, ex-officio). Paul Souder is the 1st Chair.It is expected that the Chair position will rotate.

  13. Project Manager Function: The Project Manager (PM) will be in charge of executing the project and report to JLab management. The collaboration will provide advice and oversight, and member of the collaboration will work under PM in various roles to execute the project. For example, all subsystems coordinators will report to PM. PM has the authority and responsibility to manage the SoLID project. Jian-ping Chen is the initial PM.

  14. Technical Board Function: Advises the PM on all aspects of the Project, including change in cost, scope or schedule. The TB will have a group of (usually senior) collaborators who represent the full range of required technical expertise and usually a member from each subsystem is expected to be on this board. This group will be appointed by the EB. In addition, TB will include PM and also project engineers when they are appointed. TB membership can be periodically adjusted by the EB as the situation warrants. The chair of the TB will be the PM. All EB members who are not already in TB are ex-officio members. Initial members are: Jian-ping Chen (Chair), Paul Souder, Haiyan Gao, Zein-EddineMeziani, Thia Keppel (ex-officio); Alexandre Camsonne,, Eugene Chudakov, Tom Hemmick, Xiaodong Jiang, NilangaLiyanage, Robert Michaels, Xin Qian, Paul Reimer, Yi, Wang, Zhengguo Zhao, Xiaochao Zheng.

  15. Subsystems/Responsibilities • Overall coordination: (J.P. Chen/H. Gao/P. Souder) • Calibration: (P. Souder/X, Qian) • Magnet/Support/Simulations (Argonne/Duke/UVa/Umass) • Magnet (JLab Engineering Div./ Argonne, P. Reimer) • Detector supporting structure (Duke, H. Gao) • General simulation (UVa, Z. Zhao/ Umass, S. Riordan) • Neutron background simulation (Syracuse, L. Zana) • Tracking (UVa/Chinese/others) • GEM detectors (UVa, N.Liyanaga,/Chinese collaboration) • Tracking software (JLab/O. Hansen/ Caltech, X. Qian/ Umass, S. Riordan) • Gas Cherenkov(Temple/Duke/Stony Brook) • Light gas Cherenkov (S. Malace/H. Gao, Z. Meziani, T. Hemmick) • Heavy Gas Cherenkov (S. Malace/H. Gao Z. Meziani) • EM Calorimeter (UVa/Los Alamos/W&M) • Forward angle (UVa, Z.Zhao, X. Zheng/ W&M, D. Armstrong) • Large angle (Los Alamos, J. Haung, X. Jiang/ Duke, M. Meziane, H. Gao) • TOF with MRPC (Tsinghua, Y. Wang/Duke, H. Gao/JLab, A. Camsonne) • DAQ and Trigger (JLab, A. Camsonne, Y. Qiang/Umass, R. Miskimen) • Polarimeters: Compton (UVa, K. Paschke/JLab, S. Nanda) • Atomic Moller (Mainz, F. Mass, K. Aulenbacher/ W&M, W. Deconinck) • Targets (JLab, J.P. Chen/JLab cryotarget group, D. Meekins) • Infrastructure (JLab, Hall A engineer/design team, R. Wines) • More groups are joining (UIUC, J.C. Peng, MIT, S. Gilad, …)

  16. Sub-Systems Coordinators Magnet: Robin Wines/ Paul Reimer; JLab, Argonne GEM-US: NilangaLiyanange / Bernd Surrow; Uva, Temple GEM-China: Zhengguo Zhao / XiaomeiLi; USTC, CIAE, Lanzhou, Tshinhua, IMP Calorimeter:Xiaochao Zheng / WouterDeconick/Chufeng Feng, Uva, W&M, Shandong (China), Argonne, Los Alamos Light Gas Cherenkov:Zein-EddineMeziani / Michael Paolone, Temple Heavy Gas Cherenkov: Haiyan Gao / Mehdi Meziane, Duke DAQ/Electronics: Alexandre Camsonne / Rory Miskimen/Ron Gilman, JLab, UMass, Rutgers Simulation: Seamus Riordan / Zhiwen Zhao; Umass, Uva, Duke, Syracuse Reconstruction and Analysis Software: Ole Hansen; JLab Supporting Structure and Baffle: Robin Wines/Seamus Riordan; JLab, Argonne, Umass Hall Infrastructure Modifications: Robin Wines/Ed Folts; JLab Installation: Ed Folts/Robin Wines; JLab, all user groups.

More Related