- Isamu Nakamura (Department of Physics)
- nicoleta dinu ()
- Fabrice Retiere (T)
- Yury Kudenko (Russian Academy of Sciences (RU))
Mr A. Kobayashi (Shinshu)
6/13/12, 11:15 AM
We present the results of measurements of the timing resolution of MPPCs for several pixel sizes. By using LED light, we have measured time jitter of pulses which exceed the threshold voltage. The number of photons illuminated on the MPPCs are from 10 to 10000 , while the timing resolution stays more or less constant. There are several types of MPPPC which have different number of pixels in...
Dr Fabrice Retiere (TRIUMF)
6/13/12, 11:35 AM
Hamamatsu Photonics Multi-Pixel Photon Counters (MPPCs) achieve high photodetection efficiency with relativelity low dark noise. The MPPC gain is comparable to Photomultipliers but but the pixel avalanches tend to trigger others either in neighboring pixels (crosstalk) or in the same pixel at a latter time (after-pulsing). Cross-talk and after-pulsing avalanches are one of the main limitation...
6/13/12, 11:55 AM
In this talk a generic framework for the simulation of the response of Silicon Photomultipliers (SiPMs) is presented. The framework allows a custom definition of the SiPM parameters and geometry and provides a detailed model of the SiPM response. The simulation generates the signal charge and pulse shape for arbitrary incident light pulse distributions and the specified SiPM properties which...
Sergei Dolinsky (GE Global Research Center)
6/13/12, 2:00 PM
SiPMs have a very good single photoelectron pulse (SPE) response which can be used for absolute calibration of them and defining breakdown voltage. Unfortunately with increasing size of SiPM it becomes more difficult to measure the SPE pulse due to pile up from the increased dark counts. Also this SPE calibration method requires high gain low noise amplifier, which makes it impossible to use...
Christian Jendrysik (Max-Planck-Institute for Physics)
6/13/12, 2:20 PM
A Silicon Photomultiplier (SiPM) is a novel type of photon-counting device. Due to ongoing developments in SiPM technology, it becomes promising candidate to replace conventional photomultiplier tube in a multitude of applications. The Geiger-mode operation of SiPMs requires a high ohmic quench resistor which is realized in conventional devices by surface growth of a polysilicon layer. This,...
Koji YOSHIMURA (High Energy Accelerator Research Organization (KEK))
6/13/12, 2:40 PM
Measurement of PPD (Pixelated Photon Detector) characteristics with various wavelengths is important for understanding and improvement of the sensor performances. We have developed a new pulsed laser microscope system whose wavelength is continuously tunable from 410 nm to 2200 nm by using OPO laser system. Laser spot can be focused to ~2 um, small enough to measure pixel-by-pixel performance...
Dr Florian Wiest (KETEK GmbH)
6/14/12, 2:30 PM
Geiger-mode multi-pixel photon detectors are evaluated and discussed since a few years to replace the traditional photomultiplier tubes in several applications due to their potential high photon detection efficiency, miniaturized device size, insensitivity to high magnetic field and their prospectively low production costs. To leverage this device for industrial applications the manufactures...
41. SensL New Fast Timing SPM - High-Speed Silicon Photomultiplier Signal Output for High-Performance Timing Applications
Dr O'Neill Kevin (SensL Technologies Ltd)
6/14/12, 2:50 PM
In this paper we report on a new silicon photomultiplier (SPM) architecture with additional signal output for a timing measurement. This additional output has very fast single photo electron response (about 2 ns FMTM). This new device can be easily integrated into legacy systems by providing the ability to operate as a normal SPM with Anode readout or in new designs with an additional fast...
Ivan Alexandrov (I)
6/14/12, 3:10 PM
A concept of readout of noble gas two-phase emission detectors by means of multipixel avalanche Geiger photodiodes (MGPDs or SiPMs) and a THGEM structure is presented. It is well known that a two-phase emission technique with noble gases is a very sensitive method of detection of very small ionisation signals (down to few or single ionisation electrons). Electroluminescent “amplification”...
Francisco Neves (LIP-Coimbra)
6/15/12, 2:00 PM
Liquid xenon is an excellent scintillator with large atomic number, relatively high density, high light yield and short decay time which makes it suitable for a number of applications in particle physics, astrophysics and nuclear medicine. In particular, large liquid xenon detectors are being used in several dark matter experiments. While in most cases the optical readout is done with...
Dr Elena Popova (Mephi)
6/15/12, 2:20 PM
The results of evaluation studies of high UV sensitive SiPMs produced by MEPhI/MPI operating in liquid argon. The SiPMs have PDE>50% in the wavelegth region of 350-400 nm. SiPMs were coupled with different types of WLS foils to reach high sensitivity to LAr scintillation light. The main parameters of SiPMs (PDE, noise, cross-talks, afterpulses, stability) in LAr have been thoroughly studied.
Wataru Ootani (ICEPP, University of Tokyo)
6/15/12, 2:40 PM
We are developing Pixelated Photon Detector (PPD) sensitive to deep UV scintillation photons of liquid xenon. Liquid xenon scintillation photons are successfully detected by the first prototypes of the PPD. The performance of the PPD measured in liquid xenon will be presented.