1. Summary of PD15 Junji Haba KEK

2. Usual disclaimer As is done in most of the summary talks, Apology for not all the talks being picked up in the limited time slot of this summary.

4. Development of Photodetectors PPD (SiPM) Large area, RT, Cryogenic, VUV, PMT - –for  larger area  telescope – for largest area water Cherenkov – for cryogenic detector 0 , DM, LBNE – MCP PMT RICH, DIRC, TOP Hybrid – HAPD – VSiPMT Linear APD

5. MRS-APD (Metal Resistive Semiconductor APD) SPM (Silicon Photo Multiplier) MPGM APD (Multi Pixel Geiger-mode APD) AMPD (Avalanche Micro-pixel Photo Diode) SSPM (Solid State Photo Multiplier) GM-APD (Geiger Mode APD) SPAD (Singe Photon Avalanche Diode) MPPC (Multi Pixel Photon Counter) The candidates of name in SiPM faimily SiPM (Silicon Photo Multiplier) SiPMT (Silicon Photo Multiplier Tube) From Yamamoto Pixelated Photon Detector PD07 One of the most promising recent developments in the field is that of devices consisting of large arrays (O(103 )) of tiny APD’s packed over a small area (O(1 mm2 )) and operated in a limited Geiger mode [16]. Among different names used for this class of photodetectors, “PPD” (for “Pixelized Photon Detector”) is most widely accepted (formerly “SiPM”). (PDG Review section )

6. 2005 2015 SenSL SM chip

7. Dream comes True almost Otte

8. Hosomi

9. Enhanced optical cross-talk suppression 1 st Trench Generation Metal filled trench < 1 µm At 5 V overvoltage (typical operation condition): Reduction from 17 % down to < 3 % (factor 5) Measurement based on dark rate ph.e. spectrum XT = Int(>1.5 phe)/Int(>0.5 phe) XT reduction by factor 5 8 July 2015KETEK – SiPM – Recent Developments – Photodet 2015 (Troitsk)9

10. VUV sensitivity

11. High Density keeping PDE

12. Otte

13. Musienko Further big progress!

14. Photo Multiplier Tube Mature technology? Yes, but there are still many progresses reported in the Conference.

15. Mirzoyan

17. Many studies contribute to improve Mirzoyan Melkyan Fukuda

18. Okajima

19. MCP (PMT) Matsuoka Milnes

20. Hybrid Vacuum Tube Barbato Jiang

21. Development of Detectors using Photodetectors HK KM3Net CTA, FACT, MAGIC nEXO DIAPHANE Muon Tomography GAMMA400 ILC Belle II MEG/  SR CMS/LHCb T2K/DUNE NA62 Medical Homeland security Sorry, there should be missing

22.  Physics Ripiccini Damyanova Ripiccini Damyanova Kanda Nishimura

23.  Tomography

24. Rapidly growing field Liquid noble gas TPC (Cryo temp, VUV) Stekhanov FALCONE OSTROVSKIY

25.  Telescope FINK BRETZ

26. Observatory (larger area) NISHIMURA KALEKIN

27. Medical /Industrial applications Berdonikova Philippov Santro

28. Beyond silicon

29. Device Structure The key to characterize the sensor. Not many discussion on it comparing with the evaluations… – QE vs wave length, higher geometrical factor.. – Lower cross talk – Timing property – Vbreak – Gain, capacitance. Next time at least one session should be devoted to this issue. PD07

30. VIVOLO

31. Proposed structure in PD07

32. Poster by R. Hamasaki APD on SOI

33. Finally we, the participants of PD15 like to express sincere thanks for this fruitful ceonfernce to Members of the Local Organizing Committee Key persons who worked on organization of PD15 and run the Conference: – Marat Khabibullin – Alexei Khotjantsev – Tatiana Kudenko – Oleg Mineev – Artur Shaikhiev – Oksana Trepova – Nikolay Yershov – Technical support – Konstantin Beljanski – Andrey Danilin – Victor Hakan – Andrey Korchagin – Dmitry Pestov – Alexander Saveliev – Evgeny Shabalin – Evgeny Sitnikov – The Chairman of PD15, Yury Kudenko and his colleagues

34. Next PhotoDet (PD) 5 th PD18 will be held in Japan. Date and place are to be decided and announced shortly. See you again in Japan 2018