|
HOME
ESR
EXPERIMENTS
LABS etc
|
|
E121
E127
E132
E125
E143
laser_cooling_2021
E142
Ê128
E146
E0052
E0018
E0028
E0038
E0075
E0203_E0018
E0052_2025
|
| LIBELLE 2025 |
Not logged in |
 |
|
|
|
Message ID: 34
Entry time: Sun May 11 03:23:18 2025
|
| Author: |
Simon, Konstantin |
| Category: |
Calibration |
| Subject: |
Delaytime measurement |
|
|
We performed another set of delay time measurements to substitude the broken channel of PMT middle. We did this in two step:
1.) Measurement of the total delay between the origin of a signal (AFG 10kHz, -50mV amplitude) and the detection directly before the DAQ after traveling through the long calibration cable (~50m) and the individual channel line. During this step we corrected the delay time if necessary by means of an OG 8000. This was only mandatory for PMT middle. We considered the traveling time of 46ns for all PMT detectors. We didn't measure the delay of PD North and Particle Detector south, since all other channels were fine and the delay after the OG 8000 were reasonable.
2.) Measurement of the delay within the OG 8000 octal gate generator.
|
| Total delay / ns | OG 8000 delay / ns | |
Photodiode North | - | 69.6 | |
Photodiode South | 1266.6 | 73.6 | |
PMT Middle | 1220.6 | 156.6 | |
PMT North | 1220.6 | 167.4 | |
PMT Copper | 1220.6 | 166.0 | |
Particle South | - | 337.6
|
|