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Hamamatsu Photonics Hamamatsu Profile Development

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Presentation on theme: "Hamamatsu Photonics Hamamatsu Profile Development"— Presentation transcript:

1 Hamamatsu Photonics Hamamatsu Profile Development
Large Format PMT series Oct at GDR neutrino Marc Birkel/Hamamatsu Photonics France (Hamamatsu Photonics Electron Tube Division)

2 Where we are Located

3 How did we achieve it

4 Presentation

5 Fundamental technology
Vacuum Tube Technology Glass Fabrication Material Processing Low to High voltage power supplies Electron-Optics Fundamental technology & Know-how Electron Tube Division Scintillating Materials Optics Design and Fabrication Low Noise Analog Electronics Mechanics & Assembly

6 Electron Tube Division
Product Line-up Detectors = Photosensitive Electron Tubes Photomultiplier Tubes Photomultiplier Modules Ion Detectors Phototubes Electron Multipliers Microchannel Plates (MCPs) Image Intensifiers UV Sensors Spatial Light Modulator Accessories Light Sources Xenon Lamps Mercury-Xenon Lamps Xenon Flash Lamps Deuterium Lamps Hollow Cathode Lamps Light Source Solutions Accessories UV Spot Light Source Electron Tube Division X-ray Products Microfocus X-ray Source (MFX) Scintillators X-ray Tubes X-ray Cameras Integrated Engines Photoionizer Fluorescence units Luminescence units High Speed Gated units Optical parts Lens Capillary Plates Fiber Optic Plates Filter, Beam splitters « blocks »

7 Electron Tube Division
Application examples Industrial Process HEP and Academic Research Nuclear Medecine Medical X-ray Electron Tube Division Medical diagnosis Analytical Instruments Security

8 Presentation

9 Fundamental technology
Molded parts injection III-V Compounds Crystal and Process Technology 3D Silicon Micromachining Technology High Density High Accuracy Packaging Technology Analog & Digital High Speed / Low noise Electronics Fundamental technology & Know-how Hybridization Capability Solid State Division Optical Component Design Manufacturing and Integration Direct Scintillation Deposition Capability Silicon Design And Process Volume Manufacturing

10 Product Line-up Solid State Visible Photosensors IR Photosensors
Silicon Photodiode Silicon PIN Photodiode Silicon Photodiode Array Silicon APD GaAsp, GaP Position Sensitive Detectors IR Photosensors Standard Type Long Wavelength Type Image Sensor / Array Infrared Detector Module PbS, PbSe InSb, InAs MCT Two-color Detector Optical Communication Devices High-speed Low-speed, Short-haul Spatial Light Transmission DWDM Monitor LD Monitor Light Emitters GaAs G-P led RC led VCSEL Mid IR wavelenght led Opto Asics Photo IC Photoreflector Photointerrupter Phototransistor Image Sensors CCD, FT, FFT type NMOS CMOS, APS & PPS type InGaAs Room temperature bolometer Solid State Applied Products RC & TG mini spectrometers 1D & 2D imaging modules Photosensor Integrated Modules Color Sensor Modules X-ray Products CMOS Flat Panel Imagers Coated X-ray CCD Imagers Direct Detection CCD Imagers

11 Application examples Solid State HEP and Academic Volume Application
Research Volume Application Nuclear Medecine Automotive Dental Imaging Medical diagnosis Security Medical X-ray Solid State Telecom Analytical Instruments

12 Presentation

13 Product Line-up and Application solutions
Digital Imaging Solutions Drug Screening System Semiconductor Inspection Telepathology Solutions System Division Industrial Inspection Life science Imaging Platforms High Speed Phenomenas

14 Presentation

15 Fundamental technology
Product Line-up III-V Compounds crystal and Process technology Optical parts design and Manufacturing Fundamental technology & Know-how Cooling system design Mechanics and Assembly Laser Group Packaging Technology

16 Development in Large Format PMT
PMTs for Deep Sea Neutrino Experiment 13 inch PMT, 20 inch Short Type PMTs for Megaton Type Detector Feasibility study for mass-production Large Format HPD for T2K Experiment High performance (Good S/N Ratio) Next topic is Development in Large format PMT. Categories of developments are : PMT for Deep Sea Neutrino Experiment, I will show you 13 inch PMT and 20 inch PMT with short length type PMTs for Megaton Type Detector, I will explain you about feasibility study for mass-production, briefly. Large format HPD for T2K Experiment, I will explain you about HPD (Hybrid PhotoDetector) and developmental situation.

17 Large Format PMT Lineup
20 inch 13 inch PMT is shorter comparing to its diameter. 13 inch 8 inch 10 inch This picture shows Large Format PMT Lineup from 8 inch to 20 inch. As you see, 20 inch PMT is quite big and long, but 13 inch PMT is relatively shorter comparing to its diameter.

18 Large Format PMT Series
Part No. Dia Effective Area TTS P/V (Peak to Valley Ratio) R5912 8 f190 2.4ns 2.5 R7081 10 f220 2.9ns R8055 13 f312 3.4ns R 20 f460 5.5ns 1.7 R7250 f430 3.5ns

19 Dimensional Outline of R8055
Electrodes and Metal Shield This sketch shows the dimensional outline of R8055, which is 13 inch PMT. Main difference from other PMTs is this metal stem flange. Usually, heating for sealing process damages the dynode surface. It results in low gain. Therefore, some distance between the last dynode and the bottom glass part is necessary to avoid such damage. The metal stem flange can be sealed with Helium Arcing welding. It doesn’t cause much heat. Therefore the metal stem flange can avoid the heating problem, then PMT length can be made shorter. Heating for sealing process damages dynode surface. Metal stem flange can avoid the heating problem. Metal Stem Flange

20 This electrode was developed for R7250, which is used for
R8055 (13 inch PMT) 17“ Glass Sphere with R8055 17 inch glass sphere This is a sketch of 17 inch glass sphere with R8055. This PMT can be placed in the 17 inch glass sphere. This electrode was developed for R7250. It’s a fast 20 inch PMT, and is used for KamLand experiment in Japan. As the size of the electrode is larger compared with the tube diameter, CE becomes better. We think that R8055 is the largest PMT, which is suitable for 17 inch glass sphere. This electrode was developed for R7250, which is used for KamLand experiment in Japan. R8055 is suitable for 17 inch glass sphere !!

21 R3600-02 (20 inch) Largest in the world 11,000 tubes for SUPER-K
610 mm These are a picture and a sketch for 20 inch PMT, R This PMT is the largest one in the world. 11,000 tubes are being used for SUPER-KAMIOKANDE experiment in Japan. 11,000 tubes for SUPER-K

22 Modification of 20 inch PMT
25 inch Glass Sphere too long !! Metal Stem Flange 526 mm 610 mm 20 inch PMT is the largest one, and its length is 610 mm. Even if a large glass sphere like 25 inch is made, this PMT can’t be placed inside. However, if a metal stem flange is used, its length can be short like 526 mm. Then it’s possible to place it in the 25 inch glass sphere. The matter is whether a 25 inch glass sphere can be made or not. Present 20 inch PMT Modified 20 inch PMT

23 Feasibility Study for Mass-Production (not official)
to Improve Productivity of 20 inch PMT 1. Simple Structure for easy production 2. Unique Facilities for better efficiency Early –Stage Estimation 100K tubes in 5 years (20K tubes per year) Number of Employees : 50 peoples PMT Price : $2,000 We have just started feasibility study for mass-production to improve productivity of 20 inch PMT. Hamamatsu is delivering about 500K PMTs per year to customers in all over the world. Compared with it, 10K or 20K is not so big number. However, due to the large size of 20 inch PMT, its productivity is low. To improve it, “Simple structure” is necessary for easy production, and “Unique facilities” is necessary for better production efficiency. This is still early stage, but we got feeling that we can deliver 100K tubes in 5 years (which is 20K tubes per year) with 50 employees (instead of 100). The price could be less than $2,000. We believe that these numbers are acceptable range. Next issue is glass bulbs. We are checking whether glass bulbs can be supplied from glass venders without big problems or not. We are checking whether glass bulbs can be supplied from glass venders without big problems or not.

24 Hybrid Photo-detector (HPD)
Photocathode (-8kV) APD Output Light Photoelectron <Products> R7110U-40 (TO-8 Type) R9503U-04 (Proximity Type) Large Format Type (Development) <Features> Good PHD and CE Good Uniformity Immunity to Magnetic Field This slide shows HPD, Hybrid Photo Detector. HPD consists of the photocathode, the vacuum envelope and the APD as the target. Its structure is quite simple. (Operation of HPD is following. When photoelectron is emitted from photocathode, it’s accelerated by electric field. It generates electron-hole pairs inside APD. These electrons are sent to avalanche area, then additional avalanche gain is obtained. Total gain is usually 6E+04.) This picture shows TO-8 type HPD, its type number is R7110U. We also have a proximity type, R9503U-04. Large format type is being developed. Features of HPD are good PHD and CE, good uniformity. The proximity type has immunity to magnetic field. 8keV Electron Bombardment X1200 Avalanche Gain X 50 Combination of EB and avalanche gain

25 Pulse Height Distribution
K-APD = 12KV 1pe 1pe 2pe 3pe 4pe 5pe This data shows comparison of PHD between HPD and PMT with pulsed light, which average intensity is few p.e.. In case of HPD, its electron bombardment gain is more than 1,000, it can separate number of p.e. like this. When LLD is set here, its detection efficiency is higher that that of PMT. PMT HPD

26 Sketch of 5 inch HPD 5 inch HPD was made as feasibility study for larger size. Glass bulb of 5 inch hemispherical PMT was used. APD Target (3 mm in dia.) Effective Area (80 mm in dia.) sealing tape for protection This is a sketch of 5 inch HPD. It was made as feasibility study for larger size HPD. Glass bulb of 5 inch hemispherical PMT was used. The size of APD target is 3 mm in diameter, which is used for TO-8 type HPD. This is its picture. As we used existing parts like this bulb and APD, the effective area is limited as 80 mm in diameter. 180 mm HPD : Hybrid Photo Detector

27 Next Step of Large Format HPD
13 inch HPD is being developed with collaboration of the Univ. of Tokyo and JST(JAPAN SCIENCE AND TECHNOLOGY AGENCY). Working prototype would be made in 2 years (by mar.2007). Development will be finished by Mar.2010. Next step of large format HPD is shown here. 1. 13 inch HPD is being developed with collaboration of the Univ. of Tokyo and JST (Japan Science and Technology Agency). 2. Working prototype would be made in 2 years (by March 2007). 3. Development will be finished by March 2010.


29 Thank you for your attention !!
Any Questions ??

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