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HCAL SiPM Upgrade: Workshop in Trieste, June 2-4, 2008

Explore SiPM requirements for HCAL upgrade, pulse shape analysis, radiation studies, and test beam results by A.H. Heering from Boston University.

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HCAL SiPM Upgrade: Workshop in Trieste, June 2-4, 2008

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  1. HCAL – SiPM upgrade requirements Workshop in Trieste on June 2-4 2008 A.H Heering, Boston University

  2. Inside the magnet: HB 144 x 19 channel HPDs (16 layers) HE 144 x 19 channel HPDs (16 layers) Outside the magnet: HO 132 x 19 channel HPDs (1-2 layers) HF 1800 one inch PMTs. HCAL current baseline readout A.H Heering, Boston University

  3. CMS Ring YB0 A.H Heering, Boston University

  4. Test Beam setup • Due to the cosine effect of the Angle we have lowest light in YB1 (YB0 has 2 layers) A.H Heering, Boston University

  5. Developed; Custom FBK SiPM A.H Heering, Boston University

  6. HO with SiPM readout A.H Heering, Boston University

  7. Typical SiPM pulse A.H Heering, Boston University

  8. SiPM-QIE Interface Circuit diagram S. Los (FNAL) • To match the gain of the readout we used a factor of 5 lower couple capacitor • Using R5 we hope to shape the pulse shape and cancel the tails A.H Heering, Boston University

  9. Pulse shape after QIE 1 TS=25 ns A.H Heering, Boston University

  10. 2006 First Test Beam results A.H Heering, Boston University

  11. HPD muon in HO YB1 A.H Heering, Boston University

  12. 2007 Test beam FBK custom diode (Used cells) A.H Heering, Boston University

  13. 2007 Test beam CPTA 2x2 mm diode We used light mixer A.H Heering, Boston University

  14. Linear range is worst then HPD A.H Heering, Boston University

  15. 300 GeV pion resolution in 3x3 towers ECAL + HCAL SiPM HPD No indication that late showers give worst resolution as baseline HPD A.H Heering, Boston University

  16. Measured Temperature coefficient A.H Heering, Boston University

  17. Production Cooling and stabilization A.H Heering, Boston University

  18. Radiation study in October 2007 A.H Heering, Boston University

  19. Radiation damage for 240 MeV Protons Custom 6 mm2 FBK SiPM Annealing 1 day 4 doses of 2.5E9 2 doses of 1E10 4 doses of 2.5E9 IRST Sample 1 Total dose of 1E10 p/cm2 IRST Sample 2 Total dose of 3E10 p/cm2 A.H Heering, Boston University

  20. Scope traces during radiation A.H Heering, Boston University

  21. 1mm^2 diodes A.H Heering, Boston University

  22. I_leakage vs Ped_rms A.H Heering, Boston University

  23. FBK single cel single PE (pedestal distributions) A.H Heering, Boston University

  24. Damage and QE (one day annealing) T=27 degree C A.H Heering, Boston University

  25. Dead time of micro cells A.H Heering, Boston University

  26. Signal –Pedestal during radiation A.H Heering, Boston University

  27. Signal –Pedestal during radiation Large dead time A.H Heering, Boston University

  28. HB – 1010 n/cm2/ CMS Year HE – 3 * 1010 n/cm2/ CMS Year HO – 109 n/cm2/ CMS Year HF – 1011 n/cm2/ CMS Year Radiation levels in HCAL A.H Heering, Boston University

  29. Dead time shorter?? A.H Heering, Boston University

  30. PDE vs Company HB,HE,HO HF A.H Heering, Boston University

  31. Smaller cells vs Linearity (deadtime!) A.H Heering, Boston University

  32. New devices with 10 micron cells I. Musienko A.H Heering, Boston University

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