Overview of SoLID. Jian-ping Chen, JLab. SoLID Director s Review Feb , 2015

Transcription

1 Overview of SoLID Jian-ping Chen, JLab SoLID Director s Review Feb ,

2 Outline Introduction Baseline equipment Magnet Simulations/Software Detectors Support and infra-structure Design/R&D progress Dependencies Beam polarimetry Cryo-target and polarized targets Project management Cost estimation Summary 2

3 Introduction: Overview of SoLID Solenoidal Large Intensity Device Full exploitation of JLab 12 GeV Upgrade A Large Acceptance Detector That Can Also Handle High Luminosity ( ) Take advantage of latest development in detectors, data acquisition and simulations Reach ultimate precision for SIDIS (TMDs), PVDIS in highx region and threshold J/y 5 highly rated experiments approved Three SIDIS experiments, one PVDIS, one J/y production Two additional run group experiments: di-hadron, Inclusive-SSA Strong collaboration (200+ collaborators from 50+ institutes, 11 countries) Significant international contributions 3

4 SoLID Configurations Baseline Equipment 4

5 SoLID Configuration (I): SIDIS & J/y

6 SoLID Configuration (II): PVDIS 6

7 SoLID Detector Overview PVDIS: Baffle LGC 5xGEMs EC SIDIS&J/Psi: 6xGEMs LASPD LAEC LGC HGC FASPD MRPC FAEC 7

8 SoLID Baseline Equipment Solenoid Magnet: CLEOII magnet with modifications EM Calorimeter: particle identification, mainly electron PID SIDIS forward + Large-angle (including SPD) PVDIS forward only GEM detectors: tracking Light Gas Cherenkov: electron PID Heavy Gas Cherenkov: hadron (pion) PID, only for SIDIS MRPC: TOF for 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 8

9 SoLID Magnet R. Wines Requirements: Acceptance: Φ: 2π, θ: 8 o -24 o (SIDIS), 22 o -35 o (PVDIS), P: GeV/c, Resolution: δp/p ~ 2% (requires 0.1 mm tracking resolution) Fringe field at the 3He target < ~5 Gauss Magnet options and selection (with help of simulations): Solenoid chosen over others (Toroid and ) CLEOII, BaBar vs others (ZEUS, CDF, New) CLEOII and BaBar are near ideal CLEOII vs BaBar: Both meet requirements, engineering considerations CLEOII 2013: CLEO-II magnet formally requested and agreed 2014: Site visit Plan: dissembling starting in 2015, main work in 2016, transportation to JLab ( ) Main modifications: Two of three layers of side yoke needed Add thickness to front endcap Add donut and back endcap Cost ~ 4.3 M$ + Manpower CLEO-II magnet 9

10 SoLID Simulation and Software Simulation: Riordan/ Zhao Initial Simulations: physics generators + GEANT 3 for background (proposals) Full simulation: based on Geant4/GEMC (GEMC developed for CLAS12, also used for meic) Robust set of generators: included for DIS/SIDIS, p production, backgrounds L. Zana Radiation and activation Fluka: established tool and the same full SoLID setup Geant4: crosscheck and help with shielding design Post Processing Realistic detector responses can be evaluated from GEMC output using additional standalone packages Package to generate GEM ionization/readout used for realistic pseudo-data Tracking: O. Hansen - tree search (Hall A analyzer) (PVDIS) - progressive tracking (SIDIS) 10

11 GEM Progress UVa/Temple responsible for general R&D, coordination and integration N. Liyanage First full size prototype assembled at UVa, tested in beam (Fermi Lab) Chinese collaboration has started R&D and will be the main one to obtain funding to construct all the GEM planes. J. Liu 30x30 cm prototype constructed, readout tested now working on 100 cm x 50 cm (USTC/CIAE/Tsinghua/Lanzhou/IMP) GEM foil production facility development at CIAE (China) Cost ~ 3.4 M$ + Manpower, mainly Chinese funding GEM foils made at CIAE 30cmx30cm GEM USTC 11

12 Light Gas Cherenkov Light Gas Cherenkov Counter (LGC): by Temple University M. Paolone Goals: 2 m C02 (SIDIS/Jpsi), 1 atm 1 m C4F8O (65%)+N2 (35%) (PVDIS), 1 atm 30 sectors, 60 mirrors, 270 PMTs, Area~20m 2 N.P.E>10, eff.>90%, π suppresion > 500:1 Work at 200G field (100G after shielding) Status: Support Structure and Mounting Design u-metal Shielding design Pre-R&D ongoing at Temple Cost ~ 2.1 M$ + Manpower 12

13 Heavy Gas Cherenkov (SIDIS) Separate Pions from Kaons M. Meziane Useful momentum range: GeV/c Cover angular range Kaon Rejection Rate>99% - Radiator: 1m thick C 4 F 8 O, C - 30 Spherical Mirrors - 30 Shielding Cones MAPMTS Cost ~ 2.6 M$ + Manpower 13

14 SoLID Electromagnetic Calorimeter Design requirement: 1. >50:1 p rejection with >95% electron efficiency 2. Provide trigger; Provide σ ~ 1 cm shower position 3. Radiation resistance: > (4-5)x10 5 rad 4. High field resistance: B~1.5 T, high background X. Zheng preshower Cost ~ 5.5 M$ + Manpower 14

15 SoLID Scintillator Pad Detector (SIDIS) LASPD: photon rejection 5:1; coincidence TOF (150ps preferred) design: 20mm-thick, 60 azimuthal segments, direct coupling to fine-mesh PMT LASPD X. Zheng FASPD FASPD: photon rej 5:1 design: 5-10mm-thick 240 segments (60 X 4) WLS fiber embedding, MAPMT (outside magnet) 15

16 MRPC- High Resolution TOF Y. Wang Multi-gap Resistive Plate Chamber Goals: Timing resolution < 100ps Works at high rate up to 10 KHz/cm2 Photon suppression > 10:1 p/k separation up to 2.5GeV/c Status: Tsinghua, USTC groups extensive experience from STAR Design and Prototype Developed at Tsinghua Beam test at Hall-A in 2012 New facility for mass production Read-out electronics design (Tsinghua/USTC) A MRPC prototype for SOLID-TOF in JLab Y. Wang, et al. JINST 8 (2013) P03003 Cost ~ 1.6 M$ + Manpower Mainly Chinese Funding 16

17 SoLID PVDIS Baffle Z. Zhao SoLID PVDIS needs to run 1x10 39 /cm 2 /s luminosity Baffle is made of 12 planes of 9cm thick lead with slits following electron bending in SoLID field It blocks neutral and positive tracks from target, and thus reduces background and trigger rate Acceptance ~30% for DIS electrons is maintained at P>3GeV and x>0.4 region 17

18 SoLID DAQ Overview Design goal: up to 60 KHz/sector for PVDIS (expect 30kHz) Up to 200 khz total for SIDIS (expect 100 khz) Pipelined DAQ Digital triggering schem ( coincidence calorimeter and Cerenkov ) Calorimeter clustering 292 Flash ADCs ( 12 bit 250 MHz) 1800 channels Calorimeter 270 channels Light gas Cerenkov 480 channels Heavy Gas Cerenkov 300 channels SPD scintillator 3300 channels of high resolution time of flight MRPC ( 80 ps ) GEM readout ( channels) APV25 ASIC based readout (40 MHz pipelined 128 channels multiplexed readout ) Dedicated readout 2048 channels / module On board subtraction and background processing VME or Ethernet based Cost ~ 2.2 M$ + Manpower 18

19 Experiment-Specific Dependencies Standard Equipment and Equipment Requires Additional Resources 19

20 Experiment-Specific Dependencies Standard or will be available instrumentation: SIDIS(n): T/L polarized 3 He target, standard/achieved performance J/y: LH 2 target, standard, modification in configuration PVDIS: Compton and Moller polarimeters to reach 0.4% precision similar to requirements by MOLLER and PREX Equipment needs additional resource: PVDIS: custom high-power cryotarget ESR2 assumed available (required of MOLLER) SIDIS(p): Transversely polarized NH 3 target 20

21 Beam Polarimetry for SoLID SOLID PV-DIS: global fit over many high-precision data points Requires 0.4% polarimetry accuracy for 11 GeV and 6.6 GeV beam energy Two independent measurements which can be cross-checked Continuous monitoring during production (protects against drifts, precession...) Statistical power to facilitate cross-normalization (get to systematics limit in about 1 hour). Cross Check with Hall C High precision operation at 6.6 GeV - 11 GeV Polarimetry in Hall A will be pushed to high precision by physics program PREX (1 GeV) 1%, CREX (2.2 GeV) 0.8%, MOLLER (11 GeV) 0.4% Compton Scattering from ~100% polarized laser light continuous measurement, high precision independent photon vs electron measurements, each ~0.4% Møller Iron foil in 4T field- saturated magnetization Expected 0.4% accuracy, similar to Hall C Invasive, dedicated measurement at low beam current only 21

22 Cryotarget for PVDIS 40 cm, 50 ua, ~800 W beam heating +250 W overhead Refrigeration: ESR II (required by MOLLER), more than adequate Cell/pump: Qweak style D2 polarization needs careful study Discussions with cryotarget group: no sure-stop, but significant design/engineering effort 22

23 Transverse Polarized Target for Proton-SIDIS Existing coils New 5 T superconducting coils for polarized proton target: Existing coils has a transverse opening of +/- 17 deg New coils will have +/- 25 deg transverse opening Will satisfy experimental requirement for Q 2 coverage Beam Axis Magnet axis A preliminary design report provided by Oxford Instruments and satisfies: field uniformity requirement: 1 part in 10 4 over a region +/-15mm Field stability requirement: better than 10-4 per hour in the persistent mode Magnet axis Transverse opening 23

24 SoLID Timeline and pcdr 24

25 SoLID Timeline Five SoLID experiments approved by PAC (4 A, 1 A- rating) 3 SIDIS with polarized 3He/p target, 1 PVDIS, 1 threshold J/y : CLEO-II magnet formally requested and agreed : Site visit, plan disassembling and transportation to JLab ( ) : Progress - Spectrometer magnet, modifications - Detailed simulations - Detector pre-r&d - DAQ 2014: pre-cdr submitted 2015: Director s Review Active collaboration, keep expanding: now 200+ physicists from 50+ international institutions significant international contributions (China) 25

26 Preliminary Conceptual Design Report Extensive studies in now, based on 1) CLEOII magnet with modification, preliminary engineering study 2) realistic simulations: physics, background and detectors 3) detector pre-r&d studies, including beam tests 4) DAQ similar to Hall D design, based on their experience Several internal reviews: two brainstorming sessions (Physics Division) and one informal external review (dry run) 1 st 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 Final pcdr submitted to JLab management in July,

27 SoLID Project Management Assumptions on Baseline Equipment Subsystem Responsibilities Oversight 27

28 Dependencies on Baseline Equipment Assumptions on base line equipment: 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. 28

29 SoLID Organization Structure 29

30 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 1 st Chair. It is expected that the Chair position will rotate.

31 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.

32 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-Eddine Meziani, Thia Keppel (ex-officio); Alexandre Camsonne,, Eugene Chudakov, Tom Hemmick, Xiaodong Jiang, Nilanga Liyanage, Robert Michaels, Xin Qian, Paul Reimer, Yi Wang, Jianbei Liu, Xiaochao Zheng.

33 Sub-System Responsibilities 1) Magnet: Robin Wines/ Paul Reimer; JLab, Argonne 2) GEM-US: Nilanga Liyanange / Bernd Surrow; UVa, Temple 3) GEM-China: Jiabei Liu/ Xiaomei Li; USTC, CIAE, Lanzhou, Tshinhua, IMP 4) Calorimeter: Xiaochao Zheng / Wouter Deconick/Cunfeng Feng, UVa, W&M, Shandong, Argonne, Los Alamos 5) Light Gas Cherenkov: Zein-Eddine Meziani / Michael Paolone, Temple 6) Heavy Gas Cherenkov: Haiyan Gao / Mehdi Meziane, Duke 7) MRPC: Yi Wang/ Alexandre Camsonne, Tsinghua, USTC, JLab, Duke 8) DAQ/Electronics: Alexandre Camsonne / Krishna Kumar/ Ron Gilman, JLab, Stony Brook, Rutgers 9) Simulation: Seamus Riordan / Zhiwen Zhao /Lorenzo Zana; Stony Brook, ODU, Edinburgh, Duke, Syracuse 10)Reconstruction and Analysis Software: Ole Hansen/ Tom Hemmick; JLab, Stone Brook 11) Supporting Structure and Baffle: Robin Wines/ Seamus Riordan; JLab, Argonne, Stone Brook 12) Hall Infrastructure Modifications: Robin Wines/ Ed Folts; JLab 13)Installation: Ed Folts/ Robin Wines; JLab, all user groups. 33

34 Oversight General oversight/coordination: project manager/ assistant Oversight on subsystem design Oversight on sub-systems: inter-system dependencies, integrations Frequent discussions and site visits Weekly/bi-weekly/months meetings (video conference) Collaboration meetings every 2-3 months Engineering oversight/coordination: project engineer/ assistant Frequent discussions and site visits Oversights on all subsystem designs Coordination on support systems Overall integration 34

35 Pre-R&D and Plan Pre-R&D activities focus on Confirming detector and DAQ performance as expected from simulations Answering identified questions, resolving issues Providing inputs to improve and fine tune the design Reduce risks and save cost Plan Submit funding application (MIE) to DOE in the next a few months Continue pre-r&d and finalize design until funding approval and starting ~ 3 years construction and 1-2 years installation Installation and initial commissioning 35

36 Cost Estimation 36

37 Cost Estimation Sub-system cost estimations Provided by subsystem coordinators Procurements: based on quotations from vendors whenever possible Manpower: based on experience Overhead: varies depending on responsible institutions Updates when new information available Over cost estimation Based on inputs from sub-system coordinators Added oversight manpower Manpower adjusted based on JLab experience (Hall D actual cost) JLab overhead Contingency 37

38 Cost Estimation for Subsystems (I) EMCal: Cost covers Shower (Shashlyk), preshower and SPD detectors and readout system, mounting structure, testing and manpower Shower (Shashlyk) based on IHEP revised quote; also discussing with other groups (US and China) as backup plan Preshower/SPD based on quotes from IHEP, started R&D to make prototype in-house (at UVa/China) Total (direct) ~ $5.5M + 16 FTE (-contributions 4 FTE) LGCC: Cost covers detector, readout system, testing and manpower Total ~ $2.1M + 10 FTE (-contributions 1.5 FTE) HGCC: Cost covers detector, readout system, testing and manpower Total ~ $2.6 M + 8 FTE (-contribution 1.5 FTE) 38

39 Cost Estimation for Subsystems (II) GEM detectors (US side): Cost covers the US group R&D activities, technical/engineering supports to the Chinese groups and integration Total ~$0.3M FTE GEM detector (China side) Detectors and readout system to be provided by the Chinese collaboration Total ~ $3.1M FTE MRPC (US side): Cost covers part of the readout electronics (joint), technical/engineering supports and integration Total ~ $0.5M FTE MRPC (US side): Detector and part fo readout electronics (joint) to be provided by Chinese Collaboration Total $1.1 M FTE 39

40 Cost Estimation for Subsystems (III) DAQ: 230 FADC from JLab Physics Division electronics pool 2000 channels of HV power supplies from Physics Division/Hall A Cost covers the rest of DAQ electronics, HVs, cables and manpower Total $2.3M + 16 FTE (-contribution 2.4 FTE) Magnet: Disassembling/transportation and initial refurbishing by JLab Cost covers modification, add front end cap, add back donuts-shaped detector hut, power supply, controls, manpower Total $4.3M FTE Support Structure, Infrastructure and Installation: Cost covers parts and manpower Total ~ $2.2M FTE Software, Oversight: Cost covers manpower 12 FTE (-contribution 2 FTE) 40

41 Overhead, Contingency and Total Cost Used JLab overhead ~ 50% Contingency: Currently flat (average) 35% Will vary amongst sub-systems Mostly standard/known technologies Risks evaluated, high risk items studied with simulations and R&Ds Cherenkov PMTs in magnetic field High rate tracking High rate effect on MRPC resolution High background for EM Calorimeter and Baffle design High rate and DAQ Total Project Cost ~ $5.9M (FY14 Dollor) Total Request to DOE ~ $4.8M (FY14 Dollor) 41

42 Summary SoLID baseline equipment: Designed for large acceptance and high luminosity high rate/high radiation environment Realistic simulations with physics and full background Two configurations: SIDIS-J/y, PVDIS Pre-conceptual design complete Pre-R&D progress SoLID project and cost estimation Strong collaboration with clear responsibilities for sub-systems Project oversight Assumptions on baseline equipment and other dependencies Initial cost/manpower estimation 42

43 Cost and Manpower Estimation (I) 43

44 Cost and Manpower Estimation (II) 44