Abstract
The motivation of this paper is to explore the parameters that affect the performance of Microchannel Plate Photomultiplier Tubes (MCP-PMTs) in magnetic fields with the goal to guide their design to achieve a high magnetic field tolerance. MCP-PMTs based on two different designs were tested. The magnetic field tolerance of MCP-PMT based on a design providing independently biased voltages showed a significant improvement (up to 0.7 T) compared to the one utilizing an internal resistor chain design (up to 0.1 T), indicating the importance of individually adjustable voltages. The effects of the rotation angle of the MCP-PMT relative to the magnetic field direction and of the bias voltage between the photocathode and the top MCP were extensively investigated using the MCP-PMT based on the independently biased voltage design. It was found that the signal amplitude of the MCP-PMT exhibits an enhanced performance at a tilt angle of ±8° due to the 8°bias angle of the MCP pores. The maximum signal amplitude was observed at different bias voltages depending on the magnetic field strength.
| Original language | English |
|---|---|
| Pages (from-to) | 84-89 |
| Number of pages | 6 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 929 |
| DOIs | |
| State | Published - Jun 11 2019 |
| Externally published | Yes |
Funding
The authors thank Frank Skrzecz (Engineer at ANL) for his mechanical engineering support; Joe Gregar (Scientific Glass Blower at ANL) for his talented work on glass parts; Mark Williams and Wilson Miller (Professors at University of Virginia) for their arrangement of the University of Virginia MRI magnet usage; Peter Winter (Physicist at ANL) for his arrangement of the Argonne 4-Tesla magnetic facility usage; and many people from the LAPPD collaboration for their advice and assistance. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics, Office of Nuclear Physics, under contract number DE-AC02-06CH11357. Work at Thomas Jefferson National Accelerator Facility was supported by the U.S. Department of Energy, Office of Science under contract No. DE-AC05-06OR23177. Work at Brookhaven National Laboratory was supported by the U.S. Department of Energy, Office of Science under contract No. DE-SC0012704. This work was also partially supported by the EIC R&D funding from the Office of Nuclear Physics and Office of Science of the U.S. Department of Energy. The authors thank Frank Skrzecz (Engineer at ANL) for his mechanical engineering support; Joe Gregar (Scientific Glass Blower at ANL) for his talented work on glass parts; Mark Williams and Wilson Miller (Professors at University of Virginia) for their arrangement of the University of Virginia MRI magnet usage; Peter Winter (Physicist at ANL) for his arrangement of the Argonne 4-Tesla magnetic facility usage; and many people from the LAPPD collaboration for their advice and assistance. This material is based upon work supported by the U.S. Department of Energy , Office of Science, Office of High Energy Physics, Office of Nuclear Physics, under contract number DE-AC02-06CH11357 . Work at Thomas Jefferson National Accelerator Facility was supported by the U.S. Department of Energy , Office of Science under contract No. DE-AC05-06OR23177 . Work at Brookhaven National Laboratory was supported by the U.S. Department of Energy, Office of Science under contract No. DE-SC0012704 . This work was also partially supported by the EIC R&D funding from the Office of Nuclear Physics and Office of Science of the U.S. Department of Energy .
Keywords
- Electron–ion collider
- Fast timing
- Magnetic field
- Microchannel plate
- Particle identification detector
- Photodetector