skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
 [1]
  1. Clarendon Hills, IL
Issue Date:
Research Org.:
Argonne National Lab. (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 = {1976},
month = {1}
}

Patent:

Save / Share: