[Akutsu, Marc]
Akutsu agreed to lend us the lighwave laser that was at some point used to prepare the replacement of TAMA opo.
Yesterday we tested it. Indeed, the power supply of the laser controller being broken, its is now powered by an external power supply directly connected to the +/-5V/ground pins of the controller.
The 2 power supply are locked and OVP/OCP (over voltage/current protection) settings at around 17V/10A and set parameters around 1A/5.1V.
When at 5.0V provided, the laser was stuck at 'warming up'
It will be moved today to BIGFOOT lab.
[Clement, Marc, Shalika]
We went to ATC clean room to take the laser.
First, we removed the seiden F sheet at the entrance that was placed to protect the clean room during the repair work.
Note that due to this work, the room (outside the clean room) is extremely dirty.
We reinstalled the sticky mat and took both laser, laser controller and 2 power supplies.
Also, there seems to be optics with first contact, might be worth to reapply first contact to remove it.
Some paper is also inside the clean room which could affect its cleanliness.