![]() ![]() In this work, photoelectron trajectories from the photocathode to the MCP which have a major influence on the overall performance of the MCP-PMT are simulated as a function of the magnitude and the direction of magnetic fields up to 5 T for various operating and geometry parameters, i.e. spacing and electric potential between the photocathode and the MCP. Several publications investigated the performance of MCP-PMTs under strong magnetic fields focusing on the effect of MCP channel diameters ,. ![]() In the MCP channel, the magnetic field can decrease the transit distance and collision energy of secondary electrons, resulting in low gain. Photoelectron from the photocathode to the MCP, electrons between MCPs, and electrons from the MCP to the anode can be badly deflected by the magnetic field so that they are not collected effectively, which impact is also determined largely by the geometry and operational parameters of the MCP-PMT. The magnetic field affects the MCP-PMT in several ways. A capability of operating stably in strong magnetic fields is generally essential for such applications ,. Due to their attractive advantages of time resolution and single photon detection ability microchannel plate photomultiplier tubes (MCP-PMTs) are massively employed for particle identifications in high energy physics experiments. ![]()
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