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Recent Progress in Large Format PMTs

Recent Progress in Large Format PMTs. Apr.23 2008 at VLVnT08 Workshop Hamamatsu Photonics Electron Tube Division. Contents in this talk. About Hamamatsu Photonics High QE Bialkali Photocathode New Development of 12 inch PMT 13 inch HPD(Hybrid Photo Detector) Summary.

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Recent Progress in Large Format PMTs

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  1. Recent Progress inLarge Format PMTs Apr.23 2008 at VLVnT08 Workshop Hamamatsu Photonics Electron Tube Division

  2. Contents in this talk About Hamamatsu Photonics High QE Bialkali Photocathode New Development of 12 inch PMT 13 inch HPD(Hybrid Photo Detector) Summary

  3. Hamamatsu Photonics K.K. NanoZoomer Solid Sate Division Electron Tube Division Systems Division Established : Sept 29, 1953 Net Sales : (FY 2007) Yen 96B ($950M) Employees : 4,000 (Group)(As of Sept. 07) Research Laboratories Laser Group

  4. Location of Hamamatsu Photonics ETD CRL KRL SYS SSD Hamamatsu Station Hamamatsu City Population : 820K (as of Apr.08) HONDA, YAMAHA and SUZUKI (famous motorcycle companies) have their factories in the same area.

  5. Picture of ETD (bird’s-eye view) Cafeteria & General MCP Image Sensor PMT PMT PMT X-ray Sales & General Parking Lamp Parking Parking

  6. High QE Bialkali Photocathode Announced at IEEE conference in Oct.06. Based on continuous effort for long time

  7. Bialkali QE Comparison UBA:43% Example Data for UBA : R7600-200 SBA : R7600-100 STD : R7600 x1.6 x1.3 SBA:35% STD:26%

  8. Definition of SBA/UBA R7600/R8900 1 inch Square Metal Package R9880 New TO-8 type Metal Package

  9. R7600 & R8900 & R9880(Metal Package PMTs) Metal Channel Dynodes Micro processing technology R9880 <Cross-section> R7600 Array of Linear Focused Dynode Features Compact, Fast Time Response Position Sensitive Immunity to magnetic field 1 mm 1 mm

  10. R7600 & R8900 Various Anode Types Difference of R7600 & R8900 R7600 R8900 4 channels M4 (2x2) 16 channels M16 (4x4) Y Focusing MCD X Proximity 64 channels M64 (8x8) Cross-Plate C12 (6+6) Multi-anode Fiber Coupling Imaging RICH (R7600-M64 only) (R8900-C12 only)

  11. Latest Data of R7600-200 (UBA) Example data with 10 tubes 41%~45% <<Specification>> Typical : 43 % Minimum : 38 % at peak Wavelength

  12. Conventional PMTs with SBA R6231-100 (2 inch) Applications: Radiation detection Gamma Camera Radiation Probe R6233-100 (3 inch) For Better Energy Resolution R3998-100 (1-1/8 inch)

  13. Large Format PMTs 20 inch For Better Detection Efficiency Applications: Neutrino Experiment 13 inch PMT is very low profile despite its diameter. R3600 13 inch 10 inch 8 inch R8055 R7081 R5912 Trial for High QE

  14. Example QE data R7081 (10 inch) High QE Type Champion Data 35.5 % at 380 nm Samples:47 pcs Average:32.9% Standard 26% at 380 nm

  15. Example QE data R7081 (10 inch)

  16. Cathode Uniformity of R7081

  17. Development of 12 inch PMT 12 inch PMT 17 inch Glass Sphere Some space for divider

  18. Estimation for Performance

  19. Developmental Plan of 12 inch PMT Some sample tubes would be available in Nov. 2008. We need 6 months for preparation of mass-production version.

  20. HPD Compared with PMT <HPD> <PMT> AD (Avalanche Diode) EB GAIN : 1000~2000 AD GAIN : 30~100 DYNODE GAIN : 3~10 GAIN = 4x4x4x…x4x4x4 Total gain: ~1x105 Total gain: ~1x106

  21. Pulse Height Distribution <HPD> <PMT> K-APD = 12KV 1pe 1pe 2pe 2pe 3pe 4pe 5pe Prime Feature : Good Pulse Height Distribution

  22. Large Format HPD 280mm F330mm 13 inches AD Target : 5mm f TTS(FWHM) : 440 ps Development will be finished by Mar.2010 <Collaboration> The Univ. of Tokyo and JST (JAPAN SCIENCE AND TECHNOLOGY AGENCY)

  23. EB Gain and Avalanche Gain Total : 2.3e+05 13 inch HPD

  24. QE (10 inch and 8 inch) is getting improved. 12 inch PMTs would be available in Nov.2008. 13 inch HPD would be available in Apr.2010. Summary

  25. Thank you for your attention !! Any Questions ?

  26. Hamamatsu Sales Office Map Europe JAPAN USA Southeast Asia (Subsidiaries) (Subsidiaries) (Representatives) Japanese Standard MAP

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