5th International Workshop on New Photon-Detectors (PD18)

Session

Wednesday morning

28 Nov 2018, 09:00

42. Radiation hardness of SiPMs

Dr Yuri Musienko (University of Notre Dame (Notre Dame)/INR RAS (Moscow)), Mr Adriaan Heering (University of Notre Dame (Notre Dame))

28/11/2018, 09:00

Oral

The current understanding of radiation tolerance of Silicon Photomultipliers (SiPMs) is reviewed. Effects of radiation damage caused by hadrons, electrons and gammas on SiPMs are presented and discussed. Ideas are presented on how to approach the development of radiation hard SiPMs for the future HEP experiments.

43. Studies of radiation damage to SiPMs at low temperatures.

Mr Adriaan Heering (University of Notre Dame (Notre Dame)), Dr Yuri Musienko (University of Notre Dame (Notre Dame)/INR RAS (Moscow))

28/11/2018, 09:35

Oral

Hamamatsu and KETEK SiPMs were irradiated with neutrons up to 2E12 n/cm^2 (1 MeV equivalent) at the CERN CHARM irradiation facility. The SiPMs’ temperature during irradiation was stabilized at -30 C using Peltier thermoelectric cooler. In this article, we report about studies of the SiPM dark currents during and after irradiation.

56. Gain Stabilization of SiPMs and Afterpulsing

Gerald Eigen (University of Bergen)

28/11/2018, 09:55

Oral

The gain of silicon photomultipliers increases with bias voltage and decreases with temperature. To operate SiPMs at stable gain, the bias voltage can be readjusted to compensate for temperature changes. We have tested this concept with 30 SiPMs from three manufacturers in a climate chamber at CERN varying the temperature from 1 degree C to 48 degrees C. We built an adaptive power supply that...

64. Characterisation and temperature stabilisation of a system with 22000 MPPCs

Dr Yuji Sudo (DESY)

28/11/2018, 10:15

Oral

The construction of a highly granular scintillator-tile calorimeter with 22000 MPPCs
required new approached to quality control and provided both test bench and in-situ
data for the characterisation of a large sample of photo-sensors. Thanks to the
excellent uniformity of device parameters, it was possible to stabilise the MPPC
responses in the presence of temperature variations by...

10. Development of a UV-transparent Lens Array Enlarging the Effective Area of Multi-channel SiPMs

Akira Okumura (ISEE, Nagoya University)

28/11/2018, 11:05

Oral

Recent progress of the SiPM technologies, such as high photon detection efficiency (PDE) and well-suppressed optical crosstalk have made it possible to replace conventional photomultiplier tubes (PMTs) with SiPMs in many applications. However SiPM prices per unit area is still higher than those of PMTs, and thus production of a large SiPM array is not cost effective yet. We have developed a...

58. Performance study of a large CsI(Tl) scintillator with an MPPC readout for nanosatellites used to localize gamma-ray bursts

Kento Torigoe

28/11/2018, 11:25

Oral

Currently, we are developing a fleet of nano-satellites for detection and position determination of short gamma-ray bursts (SGRBs) for the proposing CAMEROT (Cubesats Applied for MEasureing and LOcalising Transients) mission. We synchronize time information of each satellite by using a global positioning system, and plan to use large-area CsI(Tl) scintillators which provide a high light output...

41. Results of the Parallel Operation of Large-size SiPM Detector Modules and PMTs in IACTs

Alexander Hahn (Max Planck Institute for Physics, Munich, Germany)

28/11/2018, 11:45

Oral

At the Max Planck Institute for Physics, we developed three prototype detector modules using silicon photomultipliers (SiPM) instead of PMTs for the imaging cameras of the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes. The detector modules use Hamamatsu, SensL or Excelitas devices, respectively.

To achieve an active area comparable to a 1-inch PMT, we used a matrix of up to...