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NUSTAR Calorimeter WG activity report

NUSTAR Calorimeter WG activity report. Nustar Management Board, September 14-15 2006. NUSTAR CALORIMETER Working Group. Coordinator : D. Cortina , J.A. Scarpaci Created in : February 2005 after the NUSTAR collaboration

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NUSTAR Calorimeter WG activity report

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  1. NUSTAR Calorimeter WG activity report Nustar Management Board, September 14-15 2006

  2. NUSTAR CALORIMETER Working Group Coordinator : D. Cortina , J.A. Scarpaci Created in : February 2005 after the NUSTAR collaboration Goal: Find synergies between the different calorimeters in NUSTAR (R&D, Dessing phase, but also common front to negociate with providers) List : 41 members, 21 Institutions , 10 countries, Meetings - February 2005 GSI, Darmstadt (Germany) - June 2005 Valencia (Spain) - Informal meeting , September 2005, Orsay (France) - September 2005 Santiago de Compostela(Spain) - February 2006, IPN Orsay (France) - September 2006, Krakow ( SPIRAL) - October 2006, Milano (Italy) STILL NO GENERAL WEB PAGE Minutes and information available on: http:// www usc.es/genp  R3B/NUSTAR  Calorimeter http:// la direccion del IPN

  3. Updated Technical proposal for R3B cal Large dynamic range for detecting p,g Inner radius ~ 30 cm ( house Si trackers) Affordable cost!!!

  4. Simulations of the detector response Experimental constrains ECM = 10 MeV Gammas are emitted with energies up to Elab= 3.2 ECM (for β = 0.82) • To correct for the Lorentz boost it is mandatory a high granularity. • A huge crystal length is required for full energy absorption (β = 0.82) Due to the boost, gammas are basically emitted in the forward direction. A large open zone in the backwards region reduces dramatically the crystal bulk needed. H. Alvarez Pol – R3B Gamma Calorimeter NUSTAR Calorimeter WG – Valencia 17/06/05

  5. Calorimeter models (CAD) v1.2 v4.0a v4.0c v4.0b USC, IPN

  6. !? Crystal properties GSI, Lund, USC, IPN,IEM,UCM

  7. Calorimeter models (GEANT4) Detailed simulations v1.2 v4.0a v4.0b USC

  8. AGENDA 16:30 Work Status reports · 16:30-16:45 J. Peyre (IPN Orsay) Crystal tests @IPN · 16:45-17:00 I. Duran (USC) Crystal test @ USC · 17:00-17:15 S. Tashenov (GSI) Crystal test @GSI · 17:15-17:30 O. Tengbland (CSIC, Madrid) "Two layer detector" for the p-detection · 17: 30-17:45 Bo Jackobsson ( Lund) Avalanche PD readout. Test possibilities for both proton and gamma beams in Sweden · 17:45-18:00 R. Wolski (Dubna) Radiation damage of PD's and APD's · 18:00-18:15 H. Alvarez (USC) Simulations · 18:15-18: 40 Common discussion on the status reports 18-40 - ….. Other topics -         Working group package definition -         Prototype module construction -         Beam tests, what, where and when? -         Time schedule / Technical dessign report/ Deadlines Electronics- DAQ definition -         Internal MoU, working coordination -         European Money (7 FP) -         Decissions and Actions -         Next meeting

  9. Conclusions on crystal test and Simulations • CsI(Tl) energy resolution does not depend on the position 0.3% difference going from 4000 to 5000 collected light Resolution about 7-8% - more R&D with LaCl3 and squared PM Need to reproduce data with LITRANI for a full simulation • CsI(Tl) +APD (covering the full area) Barrel for R3B prototype • CsI(Tl) + PD could be an option to consider  need to be tested • CsI(pure)need to be tested at LN temperature • CsI(Na) +2PM readout reduce the light yield dependence on position interaction  is this a realistic option? • BGO have strong non uniformity • one single cristal readout with different PM  should be tested • The two layer concept only acceptable in the “expensive” option LaBr+ LaCl or CsI(undopped) but it needs to be tested (forward angles) • The two layer concept needs a realistic simulation • Radiation hardness problem for PD and probably worse for APD’s  what one expect after 15cm crystal??? • Full simulations(including reconstruction algorithms) are really needed

  10. 04/10/2006 Milan NUSTAR Calorimeter Working Group Meeting Prototype construction • 12 crystals (approx. 1x2x17 cm3) • APDs S8664-10 (Hamamatsu) • mechanical structure  IPNO concept • temperature and voltage stabilisation • electronics Saclay digitizers ?? • DAQ  VME/MBS • full simulation (Hector Alvarez) • Beam tests

  11. 04/10/2006 Milan NUSTAR Calorimeter Working Group Meeting Beam Tests • ACCULINA p,d,t,alpha • MAX-lab (LUND) 10-230 MeV photons • TSL/ GWC cyclotron (Upssala) up to p 180 MeV, d,t.alpha • GSI • Tandem-Madrid

  12. 04/10/2006 Milan NUSTAR Calorimeter Working Group Meeting Working Package definition

  13. 04/10/2006 Milan NUSTAR Calorimeter Working Group Meeting Electronics and DAQ

  14. 04/10/2006 Milan NUSTAR Calorimeter Working Group Meeting Organisative issues • Internal MoU ( i.e. DAQ WG) • European Money (FP7)

  15. 04/10/2006 Milan NUSTAR Calorimeter Working Group Meeting Decisions and Actions for R3B • Crystal and readout tests for barrel  till end 2006 • Proposal for a barrel prototype  February 2007 • Prototype construction  July 2007 • Beam tests  from September 2007 • Crystal and readout tests for forward end-cup  First results (including simulation) February 2007  Final results and decisions June 2007 • Prototype ...... • Mechanical design study • Next Working group February

  16. 04/10/2006 Milan NUSTAR Calorimeter Working Group Meeting Decisions and Actions for EXL

  17. Results CsI(Tl)+Teflon+XP5300B+137Cs Resolution FWHM Collected light for 137Cs peak VS position of impact • RS=5,5%±0,2 except for crystal 22x22x220: RS~7% • Global Resolution is quite constant along the Crystal • Variation from 14% to 38% of collected light along the Crystal

  18. Results for PMT/VM2000+137Cs Collected light for 137Cs peak VS position of impact

  19. 22x22x22 22x22x220 44x22x200 66x22x200 XP5300B 5,74% 6,70% 5,86% 6,57% APD S8664-1010 8,23% 9,39% XP1912 8,05% 9,40% 10,33% 12,28% Resolutions CsI(Tl)+VM2000+APD/PMT+137Cs

  20. XP1918 XP1901 XP3102 S8664-10 6.07 % 7.03% 9.06% 5.15 % 7.42% 8.45% 9.87% 6.28% 10.71% 12.76% 15.70% 6.31% Summary of USC Crystal tests 1x1x1cm 1x1x5 cm 1x1x10 cm Energy resolution for CsI(Tl) with a 137Cs (662 keV) source R3B/EXL meeting Milan Oct-06

  21. What the Lund/Dubna group wishes to achieve until next annual meeting • produce two* close-to-final (forward) EGPA clusters • requires CsI(Tl) decided (alternatives?,doping conc?) • from geometry decided (length?, square and rectangular.*) • Milano: readout device decided (APD or PD?) • put these clusters in correct EXL recoil detector setup (dummy) • requires exact design of ESPA for D-section (foil, thicknesses) • from HV or air (if HV – what wall?) • Milano: • make complete GEANT4 simulations for these clusters • requires we agree on the input for resolution and efficiency limiting effects • from establish direct cooperation with Orsay group, others? • Milano: • test the clusters in-beam with both protons and photons • requires from acceptance of beamtime and beamline design • TSL, MAX-lab (preliminarily accepted) • and ACULINNA:

  22. Beam-lines available for proton and gamma tests ACULINNA: Mass separator at JINR, Dubna [A. M. Rodin et al., Nucl. Instr. Meth. B 204 (2003) 114] p, d, t, αetc MAX-lab: New tagged photon beam-line from MAX electron synchrotron [J-O Adler et al. Nucl. Instr. Meth. A 388 (1996) 17] 10 – 230 MeV photons TSL/GWC: Cyclotron at The Svedberg Lab., Uppsala [L-O Andersson et al., TSL Progress report 1987-1991 p. 10] p up to 180 MeV, d, t, α

  23. Beam-lines available for proton and gamma tests ACULINNA: Mass separator at JINR, Dubna [A. M. Rodin et al., Nucl. Instr. Meth. B 204 (2003) 114] p, d, t, αetc MAX-lab: New tagged photon beam-line from MAX electron synchrotron [J-O Adler et al. Nucl. Instr. Meth. A 388 (1996) 17] 10 – 230 MeV photons TSL/GWC: Cyclotron at The Svedberg Lab., Uppsala [L-O Andersson et al., TSL Progress report 1987-1991 p. 10] p up to 180 MeV, d, t, α

  24. Large position sensitive LaBr3:Ce detector 5 cm D C A B A B 6 cm E =  (Ea...ED) a b pos(x,y,z) = centroid of light distribution Other concepts GSI J. Gerl (GSI) NUSTAR Calorimeter WG – Valencia

  25. Time schedule R3B g-calorimeter

  26. Other concepts • Two H8500 Flat panel Photomultiplier tube • MPET-H8500 readout interface • Two scintillating arrays: • Array BrilLanCe 380 Full detection area 2”x 2”, 4x4x30 mm3, encapsulated in Al housing, 3mm glass window • Array PreLuDe 420 Full detection area 2”x 2”, 4x4x30 mm3 • Spatial resolution for proton detection • gabsorption energy resolution M. Turrión, O. Tengblad NUSTAR Calorimeter WG – Valencia IEM

  27. Time schedule R3B g-calorimeter

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