KAGRA Logbook

Reports 1-1 of 1

CAL (YPcal)

dan.chen - 15:11 Thursday 24 July 2025 (34649)

YPcal calibration

With Marco Meyer-Conde

We performed monthly Pcal-Y calibration on.

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

EPICS Key	Before	After
K1:CAL-PCAL_EY_1_PD_BG_TX_V_SET	0.01483	0.02303
K1:CAL-PCAL_EY_2_PD_BG_TX_V_SET	0.01734	0.02570
K1:CAL-PCAL_EY_1_PD_BG_RX_V_SET	-0.00483	-0.00484
K1:CAL-PCAL_EY_1_OE_T_SET	0.99071	0.99060
K1:CAL-PCAL_EY_1_OE_R_SET	0.99071	0.99060
K1:CAL-PCAL_EY_2_OE_T_SET	0.98628	0.98549
K1:CAL-PCAL_EY_2_OE_R_SET	0.98628	0.98549
K1:CAL-PCAL_EY_1_RX_V_R_SET	0.50339	0.50315
K1:CAL-PCAL_EY_2_RX_V_R_SET	0.49661	0.49685
K1:CAL-PCAL_EY_WSK_PER_TX1_SET	0.33224	0.33262
K1:CAL-PCAL_EY_WSK_PER_TX2_SET	0.89637	0.89862
K1:CAL-PCAL_EY_WSK_PER_RX_SET	1.84301	1.84186
K1:CAL-PCAL_EY_2_INJ_V_GAIN	0.51710	0.51566

Images attached to this report

34649_1753336516_YPcal_alpha_RxPDpWSK_after_with_recommend.png

34649_1753336516_YPcal_alpha_TxPD1pWSK_after_with_recommend.png

34649_1753336516_YPcal_alpha_TxPD2pWSK_after_with_recommend.png

Non-image files attached to this report

result_summary.pdf

Comments to this report:

dan.chen - 16:26 Thursday 24 July 2025 (34654)

Detailed memo including time stamp (written by Marco-san)

Plan:

Get back the materials for the Y-end measurement
Make Y-end measurement

8:40 Arriving on site

9:00-9:14 Daily meeting

9:20 Entering the central

9:25 Entering Y tunnel with the necessary materials

9:32 Phone call

9:40 Arriving at Y-end

9:48 Dressed and ready to work

9:50 Dan is again making suspicious bips in the back !

The working space is good for one person

12:36 Starting last measurement

12:42 Pcal Y calibration is finished

12:45 Starting the computation script

12:50 Leaving the Y-end area

13:10 Arriving at central area

Checking the results

13:40 Leaving the area

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