40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Tue Apr 13 20:45:16 2021, Yehonathan, Update, PSL, Laser amplifier 20210413_204721.jpg20210413_203300.jpg20210413_204940.jpg20210413_205549.jpg
    Reply  Wed Apr 14 19:48:18 2021, gautam, Update, PSL, Laser amplifier 
       Reply  Thu Apr 15 09:46:24 2021, Yehonathan, Update, PSL, Laser amplifier 
          Reply  Fri Apr 16 18:21:36 2021, Yehonathan, Update, PSL, Laser amplifier 20210416_143642.jpg20210416_145408.jpg20210416_145448.jpg20210416_181324.jpg
             Reply  Sun Apr 18 21:29:55 2021, rana, Update, PSL, Laser amplifier 
                Reply  Wed Apr 21 11:09:57 2021, yehonathan, Update, PSL, Laser amplifier 20210420_171606.jpg20210420_171621.jpg20210420_171611.jpg20210420_171629.jpg20210420_171702.jpg
                   Reply  Thu Apr 22 17:28:34 2021, Yehonathan, Update, PSL, Laser amplifier 20210422_124940.jpgDrillRoomSchematics.pdf20210422_125240_1.png
Message ID: 16080     Entry time: Thu Apr 22 17:28:34 2021     In reply to: 16062
Author: Yehonathan 
Type: Update 
Category: PSL 
Subject: Laser amplifier 

According to the aLIGO 70W amplifier interlock concept the flow rate of the chiller should be between 5 and 40 l/min. The chillers I found in the TCS lab both have around 15 l/min flow rate so we should be fine in that regard.

Assuming that the power consumption of the diode box is ~800W and that the optical output power of the diode is ~ 300W of optical power, the chillers need to be able to remove the remaining power. At room temperature, they both have enough cooling capacity according to their specs.

As for the idea to put the chiller and diode box in the drill room: There are not a lot of options here. The only viable place is the SW corner (attachment 1). I was told this place is used sometimes for liquid nitrogen dewar. Alternatively, if possible, we can move the fire extinguishers to the SW corner and use the NW corner. In that way, we don't have to clear all the junk from the SW corner, as long as the extinguishers are still accessible.

I made a sketch (attachment 2) showing a possible setup for a diode box + chiller rack. The fiber and network cable can go through the hole in the wall that already exists for the N2. It will have to get bigger though (attachment 3). The rack would also need to host some Acromag unit to convert the communication channel of the chiller/flow meter to Ethernet. The Acromag on 1X7 has no spare channels.

The only power socket in the room, to which the drill is connected, is circuit #36 which is connected to panel L in the lab. The breaker's ampacity seems to be 20A if I'm reading the number on the breaker correctly.


Attachment 1: 20210422_124940.jpg  341 kB  Uploaded Thu Apr 22 19:23:40 2021  | Hide | Hide all
Attachment 2: DrillRoomSchematics.pdf  20 kB  Uploaded Thu Apr 22 19:26:38 2021  | Hide | Hide all
Attachment 3: 20210422_125240_1.png  136 kB  Uploaded Thu Apr 22 19:38:32 2021  | Hide | Hide all
ELOG V3.1.3-