Reports 1-1 of 1 Clear search Modify search
VIS (SRM)
terrence.tsang - 18:08 Friday 22 March 2019 (8487) Print this report
SRM pump down service

For this time, SRM has all controls on during pump down and it was very stable. In one ocassion, the number of counts of the IP output went over 10000 so I off-loaded the IP LVDT actuation with stepper motors (while the controls were still on).

In combination of IM picos, IP stepper motor and yaw stepper motor, I off-loaded the IM yaw offset from 1600 to -44, the IP yaw from -5100 to -3600, while centering the beam to the QPDs.

Now the current status:

IP SET: L:-400, P:-50, Y:-3600

IP stepper motor: H1:340000 steps, H2:515000 steps, H3:600000 steps

F0 SET: -1600

F0 FR: -750000 steps

F1 SET: 0

F1 FR: -250000 steps

BF SET: 0

BF FR:-100000 steps

IM:L:164, T:-74, V:172, R:261, P:694, Y:-45

TM:L:3, P:-2, Y:-21

These values are taken when the control systems were on and with all output counts less than 1000

Search Help
×

Warning

×