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Title: Characteristics of fast timing MCP-PMTs in magnetic fields

Abstract

Here, 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. Fianlly, the maximum signal amplitude was observed at different bias voltages depending on the magnetic field strength.

Authors:
 [1];  [2];  [3];  [2];  [2];  [2];  [2];  [2];  [2];  [4]
  1. Argonne National Lab. (ANL), Lemont, IL (United States); Old Dominion University, Norfolk, VA (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1511572
Report Number(s):
BNL-211591-2019-JAAM
Journal ID: ISSN 0168-9002
Grant/Contract Number:  
SC0012704; AC02-06CH11357; AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 929; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Fast timing; Microchannel plate; Photodetector; Electron–ion collider; Particle identification detector; Magnetic field

Citation Formats

Hattawy, Mohammad, Xie, Junqi, Chiu, Mickey, Demarteau, Marcel, Hafidi, Kawtar, May, Edward, Repond, José, Wagner, Robert, Xia, Lei, and Zorn, Carl. Characteristics of fast timing MCP-PMTs in magnetic fields. United States: N. p., 2019. Web. doi:10.1016/j.nima.2019.03.045.
Hattawy, Mohammad, Xie, Junqi, Chiu, Mickey, Demarteau, Marcel, Hafidi, Kawtar, May, Edward, Repond, José, Wagner, Robert, Xia, Lei, & Zorn, Carl. Characteristics of fast timing MCP-PMTs in magnetic fields. United States. doi:10.1016/j.nima.2019.03.045.
Hattawy, Mohammad, Xie, Junqi, Chiu, Mickey, Demarteau, Marcel, Hafidi, Kawtar, May, Edward, Repond, José, Wagner, Robert, Xia, Lei, and Zorn, Carl. Fri . "Characteristics of fast timing MCP-PMTs in magnetic fields". United States. doi:10.1016/j.nima.2019.03.045.
@article{osti_1511572,
title = {Characteristics of fast timing MCP-PMTs in magnetic fields},
author = {Hattawy, Mohammad and Xie, Junqi and Chiu, Mickey and Demarteau, Marcel and Hafidi, Kawtar and May, Edward and Repond, José and Wagner, Robert and Xia, Lei and Zorn, Carl},
abstractNote = {Here, 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. Fianlly, the maximum signal amplitude was observed at different bias voltages depending on the magnetic field strength.},
doi = {10.1016/j.nima.2019.03.045},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 929,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
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This content will become publicly available on March 22, 2020
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