[Ushiba, Tamaki]
Today we prepared to measure power budgets (Memo 1).
Memo 1
First, to find out the PD and QPD values in the absence of laser light, the shutter was lowered and their averages were taken (Memo 2).
(Something wrong? with REFL_QPD2 --- When leaser shutter was lowered, its count was stil more over than 2600)
Then we set up the power meter and tripod.
However, just as we were about to start taking measurements, there was a problem with the laser.
That problem was solved, but as the laser had just been switched on again, we couldn't resume work immediately.
So we will do tommorow.
Memo2
The values of QPDs and PDs in the dark are shown in the table below.
＊cdsutils avg 5 (CHANNELNAME)
| IMC_CAV_TRANS | 1.123 | |
| MCE_TRANS_QPDA1 | SEG1 | -1.856 |
| SEG2 | -5.395 | |
| SEG3 | -3.620 | |
| SEG4 | -0.961 | |
| MCE_TRANS_QPDA2 | SEG1 | -3.786 |
| SEG2 | -1.017 | |
| SEG3 | -2.738 | |
| SEG4 | -2.607 | |
| IMMT1_TRANS_QPD1 | SEG1 | -5.533 |
| SEG2 | -2.585 | |
| SEG3 | -4.326 | |
| SEG4 | -4.389 | |
| IMMT1_TRANS_QPD2 | SEG1 | -4.360 |
| SEG2 | -1.835 | |
| SEG3 | -1.543 | |
| SEG4 | -0.796 | |
| ASC_POP_FORWARD_QPD1 | SEG1 | -3.914 |
| SEG2 | -3.920 | |
| SEG3 | -3.933 | |
| SEG4 | -3.772 | |
| ASC_POP_FORWARD_QPD2 | SEG1 | -5.677 |
| SEG2 | -6.106 | |
| SEG3 | -5.265 | |
| SEG4 | -3.528 | |
| REFL_PDA1 | 4.837 | |
| REFL_PDA2 | 2632.236 (something wrong?) | |
