Simulation of microchannel plate photomultiplier tube in high magnetic fields
Abstract
The microchannel plate photomultiplier tube (MCP-PMT) used in high energy physics experiments usually needs to be able to operate in strong magnetic fields. In this paper, a 3D MCP-PMT model is developed in CST studio suite to study the magnetic field up to 5 T effect on the photoelectrons traveling from the photocathode to the MCP. Results predict that a growing number of photoelectrons strike back to the photocathode with enhancing magnetic field, which not only decreases electron collection efficiency and gain, but also impairs the photocathode lifetime.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- August 2019
- DOI:
- 10.1016/j.nima.2018.10.088
- Bibcode:
- 2019NIMPA.936..580C
- Keywords:
-
- MCP-PMT;
- Microchannel plate;
- Collection efficiency;
- Magnetic field