Background
On December 10th, the WSK system broke down and was repaired (see report). As a result, Pcal parameters associated with WSK changed significantly after this date. However, the final parameters, the conversion factors [W/V] of the integrating spheres, should remain unaffected by this incident.
Policy for Pcal Parameter Configuration
To ensure statistical significance, we decided to use only the final parameters, specifically the conversion factors of the integrating spheres. This approach allows us to utilize data both before and after the incident. As part of this process, we calculated recommended values for WSK-related parameters for each day. The following rules were applied:
- If measurement data exists prior to the specified date, all such data was included to calculate an average.
- If no measurement data exists before the specified date, the value from the nearest future measurement date was used.
- Data from before and after the incident was completely separated, and recommended values were calculated independently for each period.
Currently, a simple weighted average method is used, although we may revise this approach in the future.
Calculated WSK-Related Parameters
- \alpha_{WSK/GSK}
- \alpha_{Tx1,2/WSK}
- \alpha_{RxPD/WSK}
- (CAL Git: GitLab/cal-onsite-analysis-002/o4/common/2024-11-22_IS_calibration_summary)
Future Tasks
Moving forward, these values will be used to calculate the daily conversion factors of the integrating spheres. Additionally, the error estimation of the recommended values has not yet been performed and will be conducted in the future.
