Study of the Planacon XP85012 photomultiplier characteristics for its use in a Cherenkov detector
V. A. GrigoryevV. A. KaplinT. KaravichevaA. KurepinE. F. MaklyaevY. MelikyanD. SerebryakovW. H. TrzaskaE M Tykmanov
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Abstract:
Main properties of the multi-anode microchannel plate photomultiplier to be used in a Cherenkov detector are discussed. The laboratory test results obtained using irradiation of the MCP-PMT photocathode by picosecond optical laser pulses with different intensities (from single photon regime to the PMT saturation conditions) are presented.Keywords:
Photocathode
Cherenkov detector
Microchannel plate detector
Picosecond
Saturation (graph theory)
Cherenkov detector
Silicon Photomultiplier
Ultraviolet
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Photocathode
Microchannel plate detector
Microchannel
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Cherenkov detector
Dynode
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System for photomultiplier tubes characterization and data acquisition for water Cherenkov detectors
A water Cherenkov detector uses the emission of Cherenkov radiation for detecting the trace of secondary particles generated by extensive air shower cascades traversing a purified water tank. These are used for the detection of high energy gamma-rays. A fundamental component of the detectors consists of the photomultiplier tubes (PMTs) used for detection of the Cherenkov radiation that is produced by very high energy particles moving faster than the speed of of light in the medium. INAOE, being one of the leading institutions of HAWC, decided to develop a system to characterize the PMTs that includes measurement of dark current, linear response region determination, response to a photoelectron and hence the gain. This characterization is indispensable when several PMTs operate in an array of water Cherenkov detectors. The system was further developed to simultaneously acquire data of several phototubes, allowing also to measure coincidences. Additionally, the VME scalers modules will be used to monitor up to 32 phototubes. This system has been used to characterize the PMTs of the LAGO experiment and can be used in the future for any type of PMT system.
Cherenkov detector
Particle detector
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Photocathode
Cherenkov detector
Quantum Efficiency
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Photocathode
Microchannel plate detector
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Cherenkov detector
Photoelectric effect
SIGNAL (programming language)
Calorimeter (particle physics)
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Main properties of the multi-anode microchannel plate photomultiplier to be used in a Cherenkov detector are discussed. The laboratory test results obtained using irradiation of the MCP-PMT photocathode by picosecond optical laser pulses with different intensities (from single photon regime to the PMT saturation conditions) are presented.
Photocathode
Cherenkov detector
Microchannel plate detector
Picosecond
Saturation (graph theory)
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Citations (9)
The upcoming PANDA Experiment at FAIR in Germany will be equipped with a novel Cherenkov detector type for high-energy particle identification. This very compact Disc-DIRC detector uses a large disc-shaped fused silica plate of 2 cm thickness as its Cherenkov radiator. The internally reflected Cherenkov light is transported to the rim of the disc where it is focused by quartz light guides onto microchannel plate photomultiplier tubes (MCP-PMTs) with high spatial resolution (pitch 0.5 mm) and high time resolution (σ ≈ 100 ps). The device has an active area of about 3 m2 and will be able to identify pions and kaons with a separation power of more than 3σ in the momentum range up to 4 GeV/c. It has 32400 individual pixels and each can handle a mean photon rate of up to about 100 kHz. The presented design deals with numerous challenges that come with the very hostile environment in which the detector has to function properly, caused by the presence of high magnetic fields of up to 2 Tesla, high levels of radiation, high particle and background rates and a tight spatial volume. First test measurements have shown the performance of the design.
Microchannel plate detector
Cherenkov detector
Particle identification
Radiator (engine cooling)
Photoelectric effect
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Photocathode
Microchannel plate detector
Photoelectric effect
Microchannel
Dynode
Secondary electrons
Electron gun
Secondary emission
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