Reducing gain shifts in photomultiplier tubes

Patent · Thu Jan 01 00:00:00 EST 1976

OSTI ID:862478

Cohn, Charles E ^[1]

---

1. 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 (United States)
• 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

Related Subjects

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/