Diagnostic Device for Photomultiplier Tubes at ARP ToF Detector
- Resource Type
- Conference
- Authors
- Georgiev, Vjaceslav; Vavroch, Ondrej; Zich, Jan; Nozka, Libor
- Source
- 2020 International Conference on Applied Electronics (AE) Applied Electronics (AE), 2020 International Conference on. :1-4 Sep, 2020
- Subject
- Components, Circuits, Devices and Systems
Computing and Processing
Power, Energy and Industry Applications
Signal Processing and Analysis
Registers
Light emitting diodes
Field programmable gate arrays
Pulse width modulation
Detectors
Voltage control
Transistors
FPGA
high energy physics
PMT
photomultiplier
LED driver
physical instrumentation
PWM
rad-hard
- Language
- ISSN
- 1803-7232
1805-9597
Long-term usage of photomultiplier tubes (PMTs) led to the discovery of aging effects especially in harsh environment as a radiation is. Aging decreases the efficiency of the PMTs. This means PMTs need to the recalibration after some time. Because CERN′s Large Hadron Collider (LHC) runs for few years, the diagnostics of the PMTs is necessary. Eventual recalibration without removing the PMT is possible to accomplish by integrating the light source nearby PMT′s chassis. The light source should by as precise as possible. The used LED source needs a driver. The driver consists of controllable power source and timing controller. The perfect timing of the pulses is controlled by FPGA. An attention to the radiation hardened parts was needed because of the device proximity to the radiation source. The development and testing of the PMT diagnostic device (PDD) are described in this paper.