Reports 1-1 of 1 Clear search Modify search
CAL (XPcal)
Misato Onishi - 14:21 Tuesday 09 June 2026 (37050) Print this report
XPcal calibration

KAGRA Pcal-X updates (2026/06/09)

Workers: Dan Chen, Jiahui Xiong, Misato Onishi

We performed monthly Pcal-X calibration on 2026/06/09.

After the calibration, we updated EPICS parameters related to the Pcal-X system. No issues were found.

EPICS Key Before After Δ (After − Before)
K1:CAL-PCAL_EX_1_OE_R_SET 0.98353 0.98379 0.00027
K1:CAL-PCAL_EX_1_OE_T_SET 0.98353 0.98379 0.00027
K1:CAL-PCAL_EX_1_PD_BG_RX_V_SET -0.00390 -0.00384 0.00006
K1:CAL-PCAL_EX_1_PD_BG_TX_V_SET 0.00483 0.00477 -0.00006
K1:CAL-PCAL_EX_1_RX_V_R_SET 0.50217 0.50205 -0.00012
K1:CAL-PCAL_EX_2_INJ_V_GAIN 0.95152 0.95265 0.00113
K1:CAL-PCAL_EX_2_OE_R_SET 0.97404 0.97473 0.00069
K1:CAL-PCAL_EX_2_OE_T_SET 0.97404 0.97473 0.00069
K1:CAL-PCAL_EX_2_PD_BG_TX_V_SET 0.00389 0.00389 0.00000
K1:CAL-PCAL_EX_2_RX_V_R_SET 0.49783 0.49795 0.00012
K1:CAL-PCAL_EX_WSK_PER_RX_SET 1.49025 1.49085 0.00060
K1:CAL-PCAL_EX_WSK_PER_TX1_SET 0.52750 0.52749 -0.00001
K1:CAL-PCAL_EX_WSK_PER_TX2_SET 0.38816 0.38837 0.00021

 

Images attached to this report
Comments to this report:
dan.chen - 7:17 Wednesday 10 June 2026 (37051) Print this report

After the calibration work, we moved the RxPD back to its nominal position and found that its output had changed from the pre-work value. We investigated the cause and found that the alignment between the integrating sphere and the plate underneath it had slightly shifted. We realigned the integrating sphere with the plate, and the RxPD output returned almost to its original value.

Search Help
×

Warning

×