Reducing gain shifts in photomultiplier tubes
Patent
·
OSTI ID:862478
- Clarendon Hills, IL
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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Number(s):
- US 3943458
- OSTI ID:
- 862478
- Country of Publication:
- United States
- Language:
- English
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Reducing gain shifts in photomultiplier tubes
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Related Subjects
/330/250/
active
amplifier
appearing
applied
associated
available
cascaded
count
count rate
count rates
due
dynode
dynodes
event
event count
illuminating
illumination
intensity
light
light source
limiting
means
multiplier
multiplier tube
multiplier tubes
negligible
noise
obtained
output
output terminal
photomultiplier
photomultiplier tube
photomultiplier tubes
predetermined
provided
rates
reducing
reduction
sacrificed
shifts
source
stages
terminal
totally
tube
tubes
utilizing
varying
active
amplifier
appearing
applied
associated
available
cascaded
count
count rate
count rates
due
dynode
dynodes
event
event count
illuminating
illumination
intensity
light
light source
limiting
means
multiplier
multiplier tube
multiplier tubes
negligible
noise
obtained
output
output terminal
photomultiplier
photomultiplier tube
photomultiplier tubes
predetermined
provided
rates
reducing
reduction
sacrificed
shifts
source
stages
terminal
totally
tube
tubes
utilizing
varying