Rate capability and magnetic field tolerance measurements of fast timing microchannel plate photodetectors

Junqi Xie; Mohammad Hattawy; Mickey Chiu; Kawtar Hafidi; Edward May; Jose Repond; Robert Wagner; Lei Xia

doi:10.1016/j.nima.2017.10.059

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Rate capability and magnetic field tolerance measurements of fast timing microchannel plate photodetectors

Journal article

Open access

Peer reviewed

Rate capability and magnetic field tolerance measurements of fast timing microchannel plate photodetectors

Junqi Xie, Mohammad Hattawy, Mickey Chiu, Kawtar Hafidi, Edward May, Jose Repond, Robert Wagner and Lei Xia

Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, Vol.912, pp.85-89

12/21/2018

DOI: 10.1016/j.nima.2017.10.059

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Abstract

Microchannel plate photodetectors provide both picosecond time resolution and sub-millimeter position resolution, making them attractive photosensors for particle identification detectors of a future U.S. Electron Ion Collider. We have tested the rate capability and magnetic field tolerance of 6 × 6 cm2 microchannel plate photodetectors fabricated at Argonne National Laboratory. The microchannel plate photodetector is designed as a low-cost all-glass vacuum package with a chevron pair stack of next-generation microchannel plates functionalized by atomic layer deposition. The rate capability test was performed using Fermilab’s 120 GeV/c primary proton beam, and the magnetic field tolerance test was performed using a solenoid magnetic with tunable magnetic field strength up to 4 T. The measured gain of the microchannel plate photodetector is stable up to 75 kHz/cm2 and varies depending on the applied magnetic field strength and the rotation angle relative to the magnetic field direction. •Design of fast timing microchannel plate photodetector is described.•Rate capability and magnetic field tolerance of MCP photodetector are studied.•Performance of MCP photodetector is stable up to 75 kHz/cm2, and varies depending on magnetic field strength and rotation angle.•Optimization direction to enhance MCP photodetector magnetic field tolerance is addressed.

Electron Ion Collider

Fast timing

Magnetic field

Microchannel plate

Particle identification detector

Photodetector

Rate capability

Rotation angle

Details

Title: Subtitle: Rate capability and magnetic field tolerance measurements of fast timing microchannel plate photodetectors
Creators: Junqi Xie - Argonne National Laboratory
Mohammad Hattawy - Argonne National Laboratory
Mickey Chiu - Brookhaven National Laboratory
Kawtar Hafidi - Argonne National Laboratory
Edward May - Argonne National Laboratory
Jose Repond - Argonne National Laboratory
Robert Wagner - Argonne National Laboratory
Lei Xia - Argonne National Laboratory
Resource Type: Journal article
Publication Details: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, Vol.912, pp.85-89
DOI: 10.1016/j.nima.2017.10.059
ISSN: 0168-9002
eISSN: 1872-9576
Publisher: Elsevier B.V
Language: English
Date published: 12/21/2018
Academic Unit: Physics and Astronomy
Record Identifier: 9984627331402771

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