Hall D Progress and Issues

Transcription

1 Outline E.Chudakov APS 2010 Hall D Progress and Issues 1 Hall D Progress and Issues E.Chudakov 1 1 JLab APS Feb 2010, JLab Satellite Meeting

2 Outline E.Chudakov APS 2010 Hall D Progress and Issues 2 Outline 1 Hall D Project 2 Hall D Construction 3 Summary 4 Appendix

3 Outline E.Chudakov APS 2010 Hall D Progress and Issues 2 Outline 1 Hall D Project 2 Hall D Construction 3 Summary 4 Appendix

4 Outline E.Chudakov APS 2010 Hall D Progress and Issues 2 Outline 1 Hall D Project 2 Hall D Construction 3 Summary 4 Appendix

5 Outline E.Chudakov APS 2010 Hall D Progress and Issues 2 Outline 1 Hall D Project 2 Hall D Construction 3 Summary 4 Appendix

6 E.Chudakov APS 2010 Hall D Progress and Issues 3 Motivations for Building a New Hall D 1 GlueX: Map out the spectrum of exotic hybrid mesons in the light quark sector. linearly polarized photons at 9 GeV; detector optimized for PWA for multi-particle final states; collect high-statistics data. Approved by PAC30 in PRIMEX: Precise measurement of η γγ coupling in Primakoff reaction standard detector; unpolarized photons at GeV; Approved by PAC35 in 2010

7 E.Chudakov APS 2010 Hall D Progress and Issues 4 Other Physics Interests Charm production close to thresholds Cascade resonances A new workshop in 2010

8 E.Chudakov APS 2010 Hall D Progress and Issues 5 New Beamline and new Hall D Hall D Complex - Site Plan Tunnel Extension & Tagger Area N Construction started 2009 Floor thickness increased Scheduled RFE Aug 2010 Scheduled BO Aug 2011 Thomas Jefferson National Accelerator Facility Page 4 Hall D Meeting IPR06 June May 27-28, 13,

9 E.Chudakov APS 2010 Hall D Progress and Issues 5 New Beamline and new Hall D Hall D Complex - Site Plan Tunnel Extension & Tagger Area N Construction started 2009 Floor thickness increased Scheduled RFE Aug 2010 Scheduled BO Aug 2011 Thomas Jefferson National Accelerator Facility Page 4 Hall D Meeting IPR06 June May 27-28, 13,

10 E.Chudakov APS 2010 Hall D Progress and Issues 6 Hall D and the Photon Beamline 12 GeV e beam 2.2 µa 20 µm diamond: coherent <25 µrad Collimation r <1.8 mm at 80 m Coherent peak GeV photons: 10 8 MHz P 40% Energy/polarization measured: Tagger spectrometer Pair spectrometer

11 Intensity Diamond Radiator Uconn Interferometer CVD mm 3 Excimer laser diamond - OK! Test at CHESS 2009: Holder redesign Michelson interferometer - checking Heat load analyzed Diamond Radiator CVD 4x4x0.4 mm 3 diamond - OK! Test at CHESS 2009: holder's vibration redesign the holder (no wires/more wires) Michelson interferometer for checking the holder stability and diamond shape Heat load is being analyzed (holder design) Diamond thinning by ablation: 248 nm excimer laser at UConn - not used for 10 years - testing needed Thinning µm studies Laser ablation / Chemo-Mechanical / Ion Procurement of diamonds: FY11 E.Chudakov APS 2010 Hall D Progress and Issues Rocking curves Vibration of the holder Vibration fixed rocking angle (mrad) Page μr σ=10μr σ=60μr spec: 20μr 100 μr

12 Spectrometer /GlueX Calorimeter Review w and Physics Motivation Alex R. Dzierba Indiana U and Jefferson Lab B = 2.2 T Custom read-out & trigger 1. Brief review of the physics: search for exotic hybrid mesons 2. Importance of neutral particle detection 3. Role of calorimetry and performance metrics Liquid H target - 30 cm long Solenoid: 2.24 T Tracking (inside solenoid): Start counter Central Drift Chamber (CDC) Forward Drift Chamber (FDC) Calorimetry Barrel Calorimeter (BCAL) Forward Calorimeter (FCAL) Time-of-flight wall (ToF) E.Chudakov APS 2010 Hall D Progress and Issues 8

13 Central Drift Chamber de/dx for p < 450 MeV/c Gas mixture: ~60/40 Ar/CO 2 Angular Coverage: 6 o -155 o Resolution: s r ~ 150 m, s z ~1.5 mm Central Drift Chambers Developed at CMU, JLab Upstream end plate (Φ 119.5cm) Support tube Upstream gas plenum cap Inner skin 180cm Thomas Jefferson National Accelerator Facility Page 28 IPR September 22-24, 2009 Downstream end plate 3552 Straws (r=8 mm): 28 layers optimal angular coverage Resolution: σ rφ = 150 µm de dx Stereo straws Outer skin for π/proton ID (p < 450 MeV /c) CMU construction starts 2010 E.Chudakov APS 2010 Hall D Progress and Issues 9

14 Central Drift Chamber - Progress Straw material selection Mylar 100 µm Al 15 µm mechanically delicate Mylar 100 µm Al 0.03 µm mechanically stable Not radiated Radiated Radiation test 50 years of running: no degradation of signals Electron microscope: 0.03 µm Al - stable Selection: Mylar 100 µm Al 0.03 µm Active procurements: endplates, pins, feedthroughs Figure 5: Comparison between a Lamina-thick straw that was not used (left) and the one that was irradiated (right) at 5 and 20µm scale. 8 E.Chudakov APS 2010 Hall D Progress and Issues 10

15 Forward Drift Chamber JLab 4 packages 6 planes (2300 wires, cathode strips) Plane: wire 0 and 2 cathode strip readouts ±75 suppression of ambiguities 1-30 angular coverage σ xy = 200 µm E.Chudakov APS 2010 Hall D Progress and Issues 11

16 Forward Drift Chamber - Construction Prototype pulses in coincidence at V for a long strip and a long anode wire. 10 ns Figure 4: Cathode signals at V. The peak amplitudes in figures 3 and 4 correspond to input impulse charges of 95 fc and 111 fc, respectively, which are within the linear region of the preamp. Limited streamer operation is clearly seen at V. The output signal peak amplitudes for a sense wire and a cathode strip were measured as a function of the sense wire +HV with the Fe-55 source. The results are plotted in figure A3 in the appendix and show that the gains are matched between anode Figure 5: Cathode (top) & Anode (bot). 400 As gain multiplication occurs 350 close to the anode wire, the positive ion 300 charge 250 is halved between the cathode 200 planes; 150 the charge is then distributed Good signals 100 among 50 a few strips on each of the 0 cathode planes. The peak cathode strip Many problems found and fixed charge has been calculated to be about +HV (V) 1/5 of the anode wire charge and the Construction starts April 2010 Figure A3: Anode and cathode output peak amplitudes. preamp gains have been set accordingly. This is Input verified Charge x HV by observing E.Chudakov APS 2010 Hall D Progress and Issues Anode & Cathode 12 with Fe 55 Vp (mv) Output Peak Amplitude x HV Anode & Cathode with Fe 55 Anode Fe 55 Cathode Fe 55

17 Barrel Calorimeter Module: 191 layers Pb:SciFi:Glue (37:49:14) 48 modules SiPM 40 segments/12 2 ADC FMPM 13 segments/13 2 ADC σ E /E (%) = 5.54/ (E) beam Charged particle PID (ToF: TDC) E.Chudakov APS 2010 Hall D Progress and Issues 13

18 BCAL - Scintillating Fibers BCAL: Scintillating Fibers QA Kuraray (SCSF-78-MJ): 4 shipments so far ~ 20% of total Meet or exceed the specifications: L atten >300cm, N pe > ±20cm 6.9 pe shipment pe 380±20cm pe 370±20cm 3 Thomas Jefferson National Accelerator Facility Page 35 E.Chudakov APS 2010 Hall D Progress IPR September and Issues22-24,

19 Barrel Calorimeter - Construction Started Regina First Module Matrix alignment Polished edge: very regular matrix E.Chudakov APS 2010 Hall D Progress and Issues 15

20 E.Chudakov APS 2010 Hall D Progress and Issues 16 Hall D Project tests of the Hamamatsu Hall and DSensL prototype Construction 4 BCAL x 4 SiPM preamp arrays have been have performed. been Summary presented The objectives [2], of [3]. these This tests were to Appendix verify the correct electrical operation of the SiPMs as per the specifications supplied to note presents a summary of the most relevant parameters required for electrical the manufacturer. The BCAL readout parameters were previously described [1] and qualification of the SiPM arrays tests delivered of the Hamamatsu by Hamamatsu and SensL 4 and x 4 SiPM SensL arrays have been presented [2], [3]. This Barrel note presents a summary of the most relevant parameters required for electrical Calorimeter - Readout qualification of the SiPM arrays delivered by Hamamatsu and SensL 2. The 4 x 4 SiPM Arrays 2. The 4 x 4 SiPM Arrays Figures 1 and 2 show the 4 x 4 SiPM arrays delivered by Hamamatsu and SensL, Selection: SiPM Figures or 1 and FMPMT 2 show the 4 -x 4 by SiPM January arrays delivered 2010 by Hamamatsu and SensL, respectively. Ten (10) units were delivered by each of the vendors. respectively. Ten (10) units were delivered by each of the vendors. Hamamatsu mm 2 10pcs SenSL mm 2 10pcs Figure 6: Front view of the preamp module. Figure 7: Side view. Figure 6: Front view of the preamp module. Preliminary Figure 7: Side view. 1 Producer PDE noise τ L τ 10% unifrm Hamam. 25% 60 MHz 14 ns 80 ns 10% SenSL 10% >60 MHz 13 ns 180 ns? ns Figure 3: Single cell response with SensL readout.

21 E.Chudakov APS 2010 Hall D Progress and Issues 17 Forward Calorimeter Indiana 5.6 m away from target 2800 lead glass blocks (used before in E852 and RadPhi) Stacked in circular shape: 2.4 m diameter σ/e (%) = 5.6/ E σ xy 0.64 cm/ E

22 Forward Calorimeter FCAL Progress (Indiana) Mechanical design nearly final Magnetic shielding being tested New CW base design: almost complete (10 prototypes Jan 2010) CAN control system is progress Progress with radiation tests of lead glass 64-module prototype: Ethernet-CAN gateway Construction starts in FY10 Thomas Jefferson National Accelerator Facility Page 43 E.Chudakov APS 2010 Hall D Progress IPR September and Issues22-24,

23 E.Chudakov APS 2010 Hall D Progress and Issues 19 Electronics Progress: FADC-250 (16ch 12bit) - close to final FADC-125 (72ch 12bit) - 1/2 done, Jun final CTP - done Trigger checked with 2 crates: 200 khz achieved

24 Figure 3: Short Pulse Charge Injector V3 Hall D Outputs Input Project = Anode = Analog. Readout Hall D Construction Summary Appendix Gain = 0.6 mv/fc Figure Except 3: Short as Pulse indicated, Charge all the Injector tests Outputs Figures 1 = and Analog. 2 show the top and were performed with the ASIC bits set at bottom, respectively, of the preamp card ASIC/GPC Figures 1 and 2 show -the Preamplifier/board their default Except values as indicated, and with top and for all the the outputs tests and as received from assembly. CDC and FDC were referenced performed to +1.25V with the ASIC through bits 56 set at Ω bottom, respectively, of the preamp card Appendix their resistors. D default Linearity The values standard Plots with GlueX the outputs and Input as received from assembly. Output referenced drive configuration to +1.25V is shown through in appendix 56 Ω Connector Connector resistors. C, where The standard RTERM GlueX differentially output Input Output drive terminates configuration the complementary is Preamp shown in Impulse appendix outputs. Response (Vd x Qin) Connector Connector C, Note that where the INPA1,INPA2, cable RTERM specified INSH1,INSH2,SH_RC,HIGAIN,EN_CMP=0101X00 differentially for use GAS II terminates with the 350 CDC the complementary and the FDC outputs. has a ASIC Note characteristic that 300 the impedance cable specified of 100 Ohm. for use GAS II Low Gain, RC=0 with the 250 CDC and the FDC has a ASIC characteristic Linearity impedance y = x of Ohm. 1.8 Temperature Sensor Low Gain, RC=1 150 Figure 1: GPC-II Top View. 5. The 100 Linearity impulse response was Temperature Sensor measured 50 for varying input y charges. = x fit1 260fC@5% Power Figure 1: GPC-II Top Input View. Figure The 4 shows 0 impulse the response response to 100 was fc Section Protection measured of charge for for the 0 varying low 100 gain input configuration 200 charges fit2 380fC@5% Power Input Figure with the 4 following shows the bit response configuration: to 100 fc Qin (fc) Section Protection of charge for the low gain configuration with INPA1=INSH1=SH_RC=0, the following Anodes: bit configuration: 1.2 mv/fc, Q<600 fc INPA2=INSH2=1 INPA1=INSH1=SH_RC=0, Cathodes: Preamp 6.0 Impulse mv/fc, Response Q<120 (Vd x fcqin) INPA2=INSH2=1 Bit Anode INPA1,INPA2, discriminators: INSH1,INSH2,SH_RC,HIGAIN,EN_CMP=0101X fc Resistors 800 Bit Figure 2: GPC-II Bottom View. High Gain, RC=0 ASIC-II (8ch) developed at Upenn 600 Resistors Figure 2: GPC-II Bottom View. 400 y = x Production summer 2010 High Gain, RC=1 GPC-II (3 ASICs) developed at Jlab 2 Vdout (mv) Vdout (mv) 0 y = x E.Chudakov APS 2010 Hall D Progress and Issues fit3 110fC@5% fit4 130fC@5%

25 E.Chudakov APS 2010 Hall D Progress and Issues 21 WBS 1.5 (12 GeV) and 5.5 (BIA) Budget 1.5 Cost Construction Hall D Construction 16.0% Construction WBS WBS System System $k (FY09) FY09$k direct Direct Solenoid Detectors Computing Electronics Solenoid Detectors Computing Beamline Infrastructure Electronics Total BIA Beamline Infrastructure Total 29127

26 K$ E.Chudakov APS 2010 Hall D Progress and Issues 22 Hall D WBS 1.5 Earned Value 18,000 16,000 14,000 12,000 10, GeV 1.5 Construction Hall D Earned Value $K 8,000 6,000 4,000 2,000 0 Mar- 09 Apr- 09 May- 09 Jun- 09 Jul-09 Aug- 09 Sep- 09 Oct- 09 Nov- 09 Dec- 09 Jan-10 Feb- 10 Mar- 10 Apr- 10 May- 10 Jun- 10 Jul-10 Aug- 10 Sep- 10 Oct- 10 Nov- 10 Dec- 10 Jan-11 Feb- 11 Budget-at-Completion $31,711K Mar- 11 Apr- 11 May- 11 Jun- 11 Jul-11 Aug- 11 Sep- 11 Done 8.0% BCWS ,120 1,317 1,528 2,054 2,378 2,529 2,948 3,225 3,477 3,913 4,166 5,796 6,720 7,157 7,594 8,029 8,300 9,023 9,427 9,92310,65311,17511,63412,23114,06615,15615,779 BCWP ,234 1,699 1,997 2,271 2,520 ACWP ,237 1,681 2,050 2,401 2,681 Obligated 1,067 1,111 1,215 1,525 1,662 1,974 3,486 3,589 3,751 3,917 4,016 Pending 1,351 1,381 1,442 1,881 2,017 3,420 3,525 4,303 3,757 3,924 4,029 P6 Obl (FY10 Direct $) ,601 1,923 2,203 3,531 3,651 3,700 3,671 5,745 5,836 6,504 6,684 6,807 7,410 7,548 7,677 8,065 8,863 8,983 9,18812,25013,13713,46713,87814,09614,67114,82315,06815,287 Funding 1,225 3,419 3,419 3,419 3,420 3,412 3,412 4,412 5,412 4,540 8,155 8,155 8,155 8,155 8,155 8,155 8,155 8,155 8,155 9,15510,15511,15512,15513,15514,15515,15515,30515,45515,60515,75515,905 CAM EAC 31,26031,26031,26033,42233,42333,58433,58433,58433,58433,58434,530 2/11/2010, 2:07 PM EVMSCharts: 1.5 Construction-Hall D 3 of 90

27 Hall D Project Hall D Construction Summary Appendix Hall D Civil Phase 1 6 months behind mud slab: alignment error discovery: design mistake water pressure! redesign: floor 2ft 3.5ft bad weather cost adjustment Feb 01 - floor DONE! Feb 12 - walls started E.Chudakov APS 2010 Hall D Progress and Issues Phase 2 Still on schedule 23

28 E.Chudakov APS 2010 Hall D Progress and Issues 24 The Gluex collaboration Carnegie Mellon (CDC) Catholic University Christopher Newport Florida International (start-counter) Florida State (ToF wall) Glasgow (γ-beam) Indiana University (FCal) IUCF (CDC, FDC) University on NC, A&T University on NC, Wilmington Jefferson Lab (CDC, FDC, BCal,γ-beam) University of Connecticut (γ-beam) University of Athens (BCal) University of Pennsylvania (CDC, FDC) University of Regina (BCal) Yerevan (γ-beam)

29 E.Chudakov APS 2010 Hall D Progress and Issues 25 Summary PED finished Construction started: BCAL,FCAL,FDC,CDC reasonably good progress, about 1-2 months behind New collaborators: NC A&T, Wilmington New hires: Hall Leader, Work Coordinator, 2 scientists, 1 engineer, 2 techs Issues: Manpower (slowly improving) Solenoid - takes much more resources than anticipated Lehman review Sept 2009: concern Technical review Nov 2009: endorsed the current plan Coil testing - till July 2011

30 E.Chudakov APS 2010 Hall D Progress and Issues 26 Tagger e e Recent optimization JLab : Pole width mm 20% lighter Energy resolution (optics) 0.02% < 0.1% γ 1.5 T dipole, 6 m long, 30 mm pole gap Deflects electrons (13.4 = 12 GeV) 190 Hodoscopes: scintillator + PMTs (12 m long) GeV Catholic : Microscope: 124 scintillating fibers (movable) + SiPMs GeV ± 8 MeV Uconn :

31 E.Chudakov APS 2010 Hall D Progress and Issues 27 Spectrometer and Dimensions o o CDC Central Drift Chamber FDC Forward Drift Chambers Solenoid Future Particle ID 14.7 o 10.8 o 185 cm photon beam BCAL Barrel Calorimeter 390 cm long inner radius: 65 cm outer radius: 90 cm FCAL 48 cm 30-cm target C L 342 cm GlueX Detector 560 cm Forward Calorimeter 240 cm diameter 45 cm thick

32 Forward Drift Chamber - Construction Prototype FDC progress: construction prototype 4 planes of full scale cathodes: Cu 2 μm and 5 μm finalizing construction procedures cathode tensioning IUCF wire board wire stringing cathode glued to the frame 2 cathodes glued back-to-back Thomas Jefferson National Accelerator Facility Page 27 E.Chudakov APS 2010 Hall D Progress and Issues 28

33 Solenoid 4 separate coils Solenoid coils coil 1 baffles Coil refurbishing on BIA (operations) Coil 1 (Jlab) : short fixed, the coil is reassembled Coil 3 (IUCF) : new LN2 shield is being installed Coil/yoke configuration modified - reevaluation of the forces Minimizing the forces and mitigation of potential problems: coils 1 and 2 are swapped steel baffles added to the yoke reinforcement of coil 2 is being evaluated Equipment for the controls is being purchased (12 GeV CR09-27) Preparations for individual coil testing in FY10 E.Chudakov APS 2010 Hall D Progress and Issues 29