Next: TDC Information
Up: Tests with Cosmic Rays
Previous: Setup
Measurements and Results
Each of the three fiber bundles tested was inserted in turn in the
coffin and the trigger counter pair was positioned at five different
locations along the fiber length, shown in Table 2.
The same PMT's were used to test all three fiber bundles, thereby
assuring that the PMT gain or transit time as a function of HV
stability was not a factor in the measurements.
Table 2:
Geometry of length scan measurements. All distances are
with respect to counter FL (fiber left). All three bundles were in
loose mode configuration, i.e. inside the black tubing.
Fiber Bundle |
A (cm) |
B (cm) |
C (cm) |
D (cm) |
E (cm) |
Kuraray |
20.0 |
152.0 |
267.5 |
221.5 |
78.0 |
Pol.Hi.Tech. single |
22.0 |
157.0 |
273.0 |
228.5 |
70.0 |
Pol.Hi.Tech. double |
30.0 |
158.5 |
276.0 |
214.0 |
80.0 |
|
Subsections
Next: TDC Information
Up: Tests with Cosmic Rays
Previous: Setup
Web Master
2001-10-29