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Development and characterization of sub-100 ps photomultiplier tubes
C J Horsfield1, M S Rubery, J M Mack
1AWE, Aldermaston, Reading RGR 4PR, United Kingdom. c.j.horsfield@awe.co.uk
The Review of Scientific Instruments
|November 2, 2010
Summary
This study evaluates a new microchannel plate (MCP) photomultiplier tube (PMT) with small pores and constant voltage gaps. The device offers a fast, uniform response for diagnosing fusion implosions.
Area of Science:
- Nuclear Fusion Diagnostics
- Particle Detection Technology
Background:
- Microchannel plate photomultiplier tubes (MCP-PMTs) are crucial for high-speed detection.
- Optimizing MCP-PMT performance is key for advanced fusion energy research.
Purpose of the Study:
- To evaluate a novel MCP-PMT featuring 3 μm pores and constant voltage gaps.
- To assess the PMT's suitability for diagnosing deuterium-tritium (DT) fuel implosions.
Main Methods:
- Characterization of the MCP-PMT on multiple experimental facilities.
- Integration and deployment of the PMT within gas Cherenkov detectors.
- Utilizing the Omega Laser Facility for performance testing during DT implosions.
Main Results:
- The MCP-PMT demonstrated a response function of approximately 85 ps full-width-half-maximum.
- Constant electric fields ensured a uniform response across the device's operating range.
- Successful deployment in Cherenkov detectors for gamma-ray reaction history measurements.
Conclusions:
- The developed MCP-PMT meets stringent requirements for fusion diagnostics.
- This technology advances the capability to measure gamma-ray reaction history in DT implosions.
- The device is a valuable tool for National Ignition Facility (NIF) diagnostic development.
