Operating a triple stack microchannel plate-phosphor assembly for single particle counting in the 12-300 K temperature range.

Operating a triple stack microchannel plate-phosphor assembly for single particle counting in the 12-300 K temperature range. Research Abstract Details 

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Operating a triple stack microchannel plate-phosphor assembly for single particle counting in the 12-300 K temperature range. Abstract Text:

Stefan ,Henning T Schmidt,Peter Reinhed,Daniel Fischer,Richard D Thomas,Henrik Cederquist,Leif Liljeby,Lars Bagge,Sven Leontein,Mikael Blom,Stefan ,Henning T Schmidt,Peter Reinhed,Daniel Fischer,Richard D Thomas,Henrik Cederquist,Leif Liljeby,Lars Bagge,Sven Leontein,Mikael Blom,Stefan Rosén,Henning T Schmidt,Peter Reinhed,Daniel Fischer,Richard D Thomas,Henrik Cederquist,Leif Liljeby,Lars Bagge,Sven Leontein,Mikael Blom,

An assembly consisting of a stack of three microchannel plates (MCPs) and a phosphor screen anode has been operated over the temperature range from 300 to 12 K. We report on measurements at 6.4 kHz (using an alpha source) and with dark counts only (15 Hz). Without any particle source, the MCP bias current decreased by a factor of 2.1 x 10(3) when the temperature was lowered from 300 to 12 K. Using the alpha source, and a photomultiplier tube (PMT) to monitor the phosphor screen anode, we first observed an increase in the decay time of the phosphor from 12 to 45 mus when the temperature was decreased from 300 to 100 K while the decay time then decreased and reached a value of 5 mus at 12 K. The pulse height distribution from the PMT was measured between 300 and 12 K and shows a spectrum typical for a MCP phosphor setup at 300 K and 12 K but is strongly degraded for intermediate temperatures. We conclude that the present MCP-phosphor detector assembly is well suited for position-sensitive particle counting operation at temperatures down to at least 12 K even for count rates beyond 6 kHz. This result is crucial and an important part of ongoing developments of new instrumentation for investigations of, e.g., interactions involving complex molecular ions with internal quantum state control.

Operating a triple stack microchannel plate-phosphor assembly for single particle counting in the 12-300 K temperature range. Publishing Authors By Initials

S ,HT Schmidt,P Reinhed,D Fischer,RD Thomas,H Cederquist,L Liljeby,L Bagge,S Leontein,M Blom,S ,HT Schmidt,P Reinhed,D Fischer,RD Thomas,H Cederquist,L Liljeby,L Bagge,S Leontein,M Blom,S Rosén,HT Schmidt,P Reinhed,D Fischer,RD Thomas,H Cederquist,L Liljeby,L Bagge,S Leontein,M Blom,

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Operating a triple stack microchannel plate-phosphor assembly for single particle counting in the 12-300 K temperature range. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: The Review of scientific instruments

VOLUME: 78

Page Numbers: 113301

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ISSN: 0034-6748

DAY: 6

MONTH: Nov

YEAR: 2007

Operating a triple stack microchannel plate-phosphor assembly for single particle counting in the 12-300 K temperature range. Information

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LANGUAGE: eng

NlmUniqueID: 405571

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Grant and Affiliation Information for Operating a triple stack microchannel plate-phosphor assembly for single particle counting in the 12-300 K temperature range.

AFFILIATION: Department of Physics, AlbaNova University Center, Stockholm University, SE-106 91 Stockholm, Sweden. rosen@physto.se

Country: United States

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MEDLINETA: Rev Sci Instrum

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