Reducing gain shifts in photomultiplier tubes
Abstract
A means is provided for reducing gain shifts in multiplier tubes due to varying event count rates. It includes means for limiting the number of cascaded, active dynodes of the multiplier tube to a predetermined number with the last of predetermined number of dynodes being the output terminal of the tube. This output is applied to an amplifier to make up for the gain sacrificed by not totally utilizing all available active stages of the tube. Further reduction is obtained by illuminating the predetermined number of dynodes with a light source of such intensity that noise appearing at the output dynode associated with the illumination is negligible.
- Inventors:
-
- Clarendon Hills, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 862478
- Patent Number(s):
- 3943458
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- reducing; shifts; photomultiplier; tubes; means; provided; multiplier; due; varying; event; count; rates; limiting; cascaded; active; dynodes; tube; predetermined; output; terminal; applied; amplifier; sacrificed; totally; utilizing; available; stages; reduction; obtained; illuminating; light; source; intensity; noise; appearing; dynode; associated; illumination; negligible; output terminal; light source; photomultiplier tube; photomultiplier tubes; count rate; count rates; event count; multiplier tube; multiplier tubes; /330/250/
Citation Formats
Cohn, Charles E. Reducing gain shifts in photomultiplier tubes. United States: N. p., 1976.
Web.
Cohn, Charles E. Reducing gain shifts in photomultiplier tubes. United States.
Cohn, Charles E. Thu .
"Reducing gain shifts in photomultiplier tubes". United States. https://www.osti.gov/servlets/purl/862478.
@article{osti_862478,
title = {Reducing gain shifts in photomultiplier tubes},
author = {Cohn, Charles E},
abstractNote = {A means is provided for reducing gain shifts in multiplier tubes due to varying event count rates. It includes means for limiting the number of cascaded, active dynodes of the multiplier tube to a predetermined number with the last of predetermined number of dynodes being the output terminal of the tube. This output is applied to an amplifier to make up for the gain sacrificed by not totally utilizing all available active stages of the tube. Further reduction is obtained by illuminating the predetermined number of dynodes with a light source of such intensity that noise appearing at the output dynode associated with the illumination is negligible.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1976},
month = {Thu Jan 01 00:00:00 EST 1976}
}