Difference between revisions of "Background Rate Studies"
From GlueXWiki
(→CDC) |
|||
Line 16: | Line 16: | ||
[[Image:cdc_energy.jpg|frame|center|A double-log plot of the energy of all hits in the CDC. The spectrum cuts off at 1 keV due to the GEANT threshold.]] | [[Image:cdc_energy.jpg|frame|center|A double-log plot of the energy of all hits in the CDC. The spectrum cuts off at 1 keV due to the GEANT threshold.]] | ||
+ | |||
+ | == FDC == | ||
+ | |||
+ | Detector Configuration: | ||
+ | |||
+ | * Double-Hit Resolution: 250 ns | ||
+ | * Threshold: 1 keV | ||
+ | * Strip Threshold: 5 mV (where is this applied?) | ||
+ | * Maximum Number of Hits (per Event): 100 |
Revision as of 15:11, 18 December 2006
This page summarizes various studies used to try to understand backgrounds produced in the detector from the 9 GeV coherent brem. beam that enters Hall D.
Simulation Information
A total of 108 9 GeV beam photons (1 second of beam time) were generated using the geometry and simulation current as of approx. December 1. Note that various hit thresholds exist for each detector system. Noise count rates are highly dependent on these thresholds.
CDC
Detector Configuration:
- Double-Hit Resolution: 250 ns
- Threshold: 1 keV
- Maximum Number of Hits (per Event): 100
FDC
Detector Configuration:
- Double-Hit Resolution: 250 ns
- Threshold: 1 keV
- Strip Threshold: 5 mV (where is this applied?)
- Maximum Number of Hits (per Event): 100