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The result of GoldenDOM Calibration

The result of GoldenDOM Calibration. Hiroko Miyamoto T.Noda, S.Yoshida, K.Mase K.Hoshina, M.Krasberg, K.Hanson, C.Rott Chiba University, UW Madison, PSU. Who is doing what?. Chiba University Hiroko, Keiichi, Tsuyoshi, Shigeru UW-Madison Kael, Mark, Chris and FAT people … PSU

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The result of GoldenDOM Calibration

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  1. The result of GoldenDOM Calibration Hiroko Miyamoto T.Noda, S.Yoshida, K.Mase K.Hoshina, M.Krasberg, K.Hanson, C.Rott Chiba University, UW Madison, PSU

  2. Who is doing what? • Chiba University Hiroko, Keiichi, Tsuyoshi, Shigeru • UW-Madison Kael, Mark, Chris and FAT people… • PSU Carsten, Martin

  3. Contents • Golden PMT calibration @ Chiba • Golden DOM calibration @ Chiba (useful LC circuit!) • DOM vs PMT? • Schedule

  4. Golden PMT/DOM production and calibration 2005/06 deployment SouthPole FAT#8 Madison Chiba Chiba PMT calibration Chiba DOM calibration Hamamatsu Hamamatsu PMT QE calibration 2004,Nov 2005,Jun. Jul. Aug. Sep. Oct. Nov. Dec.

  5. IceCube Golden PMT/DOM calibrations at Chiba [DOM] Room Temperature • Relative Collection Efficiency (4π) • Absolute Efficiency (1 point) [PMT] Low Temperature (-32C) • Gain • Waveform • Noise Rate Room Temperature • Relative Collection Efficiency (2π) • Absolute QExCE Efficiency (1 slice) http://www.ppl.phys.chiba-u.jp/research/IceCube/pmt/GoldenPMT/ for GoldenPMT calibration 2005

  6. Hakkenden (“eight” dog) Warriors….? DOM namePMT # Sosuke_Inukawa : TA1181 --failed Dosetsu_Inuyama : TA1069 Shino_Inuzuka : TA1052 Genpachi_Inukai : TA1167 Kobungo_Inuta : TA1062 Keno_Inuzaka : TA1056 --failed Shinbei_Inue : TA1059 Daikaku_Inuyama : TA1176 --failed

  7. 2D PMT Scan • Data library available • Implemented in the detector MC

  8. 2D CE map I TA1052 TA1059 TA1062

  9. 2D CE map II TA1069 TA1167

  10. PMT absolute calibration

  11. Chamber and DAQ ATTENUATOR Pressure meter Temp monitor

  12. QExCE(absolute efficiency) = photoelectron # / cathode hit photon # Estimate incidental photon #. cathode hit photon # ~initial photon#xaperture x Cross Section Energy meter Numerical calculation Typically, ~4x109x5x10-11~ 0.2

  13. Pedestal subtraction sf0077@1atm

  14. 2DCE combined with 2D absolute QExCE

  15. HAMAMATSU QE vs Chiba QExCE

  16. Golden DOM calibration

  17. How useful external trigger is? • SPE-based measurement SPE-based study is very important and fundamental, but we can’t see SPE signals from light source because of the bunch of noise • Control trigger rate You don’t need to take 10 kHz dark noises anymore but signals at a rate just as you like • Standalone operation DOM can take the data from the light source by itself alternatively (you don’t need other DOMs or MB anymore) • After pulse measurement You can trigger anytime you like, which enables you to see after pulses

  18. N2 N2 laser Absolute efficiency measurement for DOM Same setup as for PMT (with 337nm N2 laser), except: • 2000 incidental photons (increase the laser luminosity)

  19. Shino_Inuzuka POS.1 DOM surface POS.2 POS.3 ~2cm POS.1 POS.3 POS.2

  20. PMTs vs DOMs (Preliminary)

  21. DOM efficiency Acceptance(l) + Glass/gel transmittance

  22. DOM 2D 4p scan Combine DOM absolute efficiency and DOM 2D scanning map! Map out the detection efficiency

  23. 2D Scanning System for DOM

  24. Dosetsu_Inuyama Very very preliminary!

  25. By the way… Quad-LC signal works very well as a event trigger. Cosmic μ (bkg) Rayleigh scattered Photon signal peak Externally triggered LED signal, no bkg

  26. How about next year? • We are providing another set of 8 Golden DOMs next year. • Chiba calibrate and ship them to UW via Hamamatsu in May 2006 for FAT in May or June.

  27. Discussion Any idea for this year?(with 5 Golden DOMs…) For example…. Ice Layer

  28. Genpachi_Inukai

  29. Shinbei_Inue

  30. Kobungo_Inuta

  31. Dosetsu_Inuyama

  32. Kobungo_Inuta

  33. Shinbei_Inue

  34. Shino_Inuzuka

  35. Genpachi_Inukai

  36. 2D CE map I TA1052 TA1059 TA1062

  37. 2D CE map II TA1069 TA1167

  38. HPK vs CHIBA

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