Recent Progress in Recent Progress in Vacuum Photon Detectors - PowerPoint PPT Presentation

Recent Progress in Recent Progress in Vacuum Photon Detectors Vacuum Photon Detectors from Hamamatsu from Hamamatsu at APP 2012 on Jul.27 7 2012 2012 at APP 2012 on Jul.2 Hamamatsu Photonics Electron Tube Division Yuji Yoshizawa Electron Tube Division 1

European an and Russian MAP and Russian MAP Europe 3 hours flight from PEK to UUD FAR EAST Waiting time is much longer !! RUSSIA Moscow Lake Baikal EUROPE Ulan-Ude JAPAN Mongolia China Beijing Tokyo Heavy Rain in Beijing on 7/21 More than 500 flights were cancelled. 80,000 peoples had to stay there. I was one of them, but I finally came here. 2

Where is Hamamatsu located ? Where is Hamamatsu located ? ETD Expansion MAP JAPAN Laboratories SSD Hamamatsu City Population: 820K HONDA, YAMAHA and SUZUKI are located in the same area. 3

Hamamatsu Photonics K.K. Hamamatsu Photonics K.K. Solid Sate Division Electron Tube Division Solid Sate Division Electron Tube Division Laser Group Laser Group Systems Division Systems Division Research Laboratories Laboratories Research Europe JAPAN China Subsidiary USA (Subsidiaries) (Subsidiaries) Southeast (Representatives) Asia Established : Sept.29.1953 ¥80/$ Net Sales : (FY 2011) Yen 100B ($1.25B / €1.0B) ¥100/€ Employees : 4,000 (Group) (As of Sept.2011) 4

New Products (1) New Products (1) R11780 / 12-inch PMT for Neutrino Experiment R11920-100 / 1.5-inch PMT for Gamma-ray Telescope R11919 / 1.5-inch Fast PMT for HEP & Medical Instrument 5

New Products (2) New Products (2) 3-inch Metal Bulb PMTs for Dark Matter Experiment R11265 / New Metal Package PMT for HEP & Medical Instrument R10467U / Fast HPD μ -PMT (micro PMT) μ for Microscope for Biomedical under development 6

Comparison of Dimension between Comparison of Dimension between R11780 (12” ”) and R7081 (10 ) and R7081 (10” ”) ) R11780 (12 Larger effective area ratio Diff.=25 mm Φ 280 mm Diff.=33 mm Φ 305 mm Φ 220 mm 12 inch R11780 Φ 253 mm 10 inch Round Round R7081 Shape Shape Mushroom Mushroom Shape Shape Higher Pressure- -resistance resistance Higher Pressure Target: 10 atm Target: 10 atm 7

Comparison of Characteristics Comparison of Characteristics R11780 R7081 Items 12-inch PMT 10-inch PMT Diameter 305 mm 253 mm Effective Area 280 mm min. 220 mm min. Effective Area Ratio 84.3% 74.6% Tube Length 385 mm 300 mm Dynodes LF/10-stage LF/10-stage 1.0E+07 1.0E+07 at GAIN at2000V 1500V T.T.S. (FWHM) 2.7 ns 2.9 （ 3.4 ） ns P/V Ratio 3.0 2.5 （ 2.8 ） Dark Counts 10,000 cps 7,000 cps ( ) actual average value 8

R11780 QE Improvement R11780 QE Improvement R11780 QE Transition 40 35 38.9% 30 QE at 380 nm [%] 25 High QE Trials 20 Standard 15 10 Low QE was observed at the beginning of trial production. Improvement effort was made from Apr.2011. 5 We called it High QE trials. As a result, QE becomes better. 0 0 10 20 30 40 50 Serial Number 9

Variation of Bulb Thickness Variation of Bulb Thickness Zone A Zone B Zone C We found that bulb thickness Samples Weight (g) 8-inch circle around Equator Neck part was thinner than specification. 1 2.5 2.8 2.6 2.4 2.4 2.6 2.9 2.7 2.4 2.4 2.6 2.8 1675 2 2.3 2.7 2.6 2.5 2.4 2.1 2.2 2.4 2.6 2.7 2.7 2.7 1385 3 2.1 2.3 2.2 2.3 2.5 2.7 2.2 2.3 3.7 3.6 3.5 3.2 1605 4 2.8 2.1 2.3 2.7 1.8 2.1 1.67 1.5 2.7 2.9 3 2.8 1275 5 2.2 2 2.2 2.5 2.2 2.2 1.9 2 2.8 2.7 3 2.9 1370 Bulb thickness: less than 2.5 mm 6 2.6 2.7 2.5 2.2 2.4 2.4 2.7 3.3 3.9 3.5 3.3 3.6 1685 Bulb thickness: larger than 4.0 mm 7 2 2.2 2.4 2.3 2.2 2.2 2 2.8 3.5 3.3 3.1 3.9 1540 Check List for 30 bulbs 8 2.2 2 2.1 2.1 2.1 2.1 1.9 2.1 3.3 2.8 3 3.2 1440 9 2.4 2.8 2.6 2.7 2.3 2.3 4 3.1 3.1 2.9 3.1 3.6 1715 10 2.4 2.4 2.4 2.4 2.4 2.4 2.7 2.4 3.3 3.6 3.6 3.4 1625 Zone A 11 1.9 1.7 1.7 1.7 2.2 2.2 1.8 2 3.7 3.5 3.6 3.9 1495 12 2 2.1 2.2 2 2.2 2.2 2.6 2.4 2.5 2.5 2.4 2.5 1360 8-inch circle 13 3 2.9 3.2 3 3.1 3.1 2.7 3.2 3.6 4.1 4 3.5 1770 14 2.4 2.2 2.6 2.2 2.4 2.4 1.9 1.7 3.5 3.2 2.9 3.6 1400 15 3.2 3.1 3.2 3.1 2.7 2.7 3.6 3.5 2.9 2.7 3 3.1 1650 Zone B 16 2.2 2 2.5 2.2 2.2 2.2 2.5 2.5 3.7 3.7 3.7 3.9 1610 Equator 17 2.2 1.86 1.7 1.9 3.1 2.3 1.8 2.6 3.3 4.2 3.7 3.3 1630 18 2.9 2.7 2.6 3 3.4 4.1 2.8 2.4 3.8 3.4 3.8 3.8 1835 19 2.5 2.6 2.4 2.5 2.7 3.3 3.2 3.1 3.9 3.7 3.2 3.3 1755 20 2.4 2.7 2.3 2.3 2.2 1.8 2 2.2 3.8 3.5 3.5 3.6 1425 Zone C 21 2.8 2.6 2.6 2.8 2.9 2.5 2.8 3 4.1 3.9 3.3 3.6 1725 Neck part 22 2.1 2.6 2.6 2 2.8 2.2 2.5 2.9 3.2 3.2 3.2 3.8 1540 23 1.7 2.1 2.3 1.9 1.9 2.5 2.8 2.3 3.9 3.5 3.3 3.6 1530 24 2.7 2.7 2.3 2.6 2.5 2.4 2 2.5 4.1 4.2 4.2 4 1660 25 2.7 3 2.9 3 2.4 4.1 3.6 2.69 3.3 3.5 3.5 3.3 1830 4 points/Zone were 26 2.5 2.5 2 2.1 2.6 2.4 1.7 1.8 4.1 3.8 4 3.8 1460 27 1.9 1.86 1.7 1.8 2.3 2.1 2.2 2.9 3.8 3.6 3.6 3.7 1520 measured with 28 3.7 3.1 2.5 3.2 3.1 3.1 3.3 2.9 2.7 3.3 3.3 2.9 1740 29 2.5 3 2.6 2.6 3.3 3.5 3.6 3.6 4 3.7 3.8 3.9 1880 Ultra Sound Probe. 30 2.5 2.7 2.2 2.3 3.4 3.4 3.9 3.9 4 4 4 3.7 1950 max 3.7 3.1 3.2 3.2 3.4 4.1 4 3.9 4.1 4.2 4.2 4 1950 min 1.7 1.7 1.7 1.7 1.8 1.8 1.67 1.5 2.4 2.4 2.4 2.5 1275 Ave 2.4 2.5 2.4 2.4 2.5 2.6 2.6 2.6 3.4 3.4 3.4 3.4 1603 10