Ultra-high speed photomultiplier tubes with nanosecond gating for fusion diagnostics

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4728313· OSTI ID:22093798

Milnes, J. S. ^[1]; Horsfield, C. J.; Rubery, M. S. ^[2]; Glebov, V. Yu. ^[3]; Herrmann, H. W. ^[4]

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1. Photek Ltd, 26 Castleham Road, St Leonards on Sea, East Sussex, TN38 9NS (United Kingdom)
2. AWE, Aldermaston, Reading, Berkshire, RG7 4PR (United Kingdom)
3. University of Rochester - Laboratory for Laser Energetics, 250 E. River Road, Rochester, New York 14623 (United States)
4. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

Fusion diagnostics can involve the measurement of ultra-fast optical pulses, often in close temporal proximity. We present a solution for the diagnostics of gamma reaction history and neutron time of flight by using microchannel plate based photomultiplier tubes (PMTs). The time response of the PMTs can be as fast as 100 ps FWHM and with a gain of up to 10{sup 7}. To observe small events in close temporal proximity to much larger signals such as the down-scattered fraction, the response of MCP-PMTs can be gated with an on/off ratio of up to 10{sup 13} in just 2 ns.

• OSTI ID: 22093798
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 83; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
GAIN
MICROCHANNEL ELECTRON MULTIPLIERS
NEUTRONS
PHOTOMULTIPLIERS
PHOTONUCLEAR REACTIONS
PLASMA DIAGNOSTICS
PULSES
TIME-OF-FLIGHT METHOD
TUBES
VELOCITY