40m
QIL
Cryo_Lab
CTN
SUS_Lab
TCS_Lab
OMC_Lab
CRIME_Lab
FEA
ENG_Labs
OptContFac
Mariner
WBEEShop
|
40m Log |
Not logged in |
 |
|
Mon Apr 30 21:05:32 2012, Jenne, Update, SUS, ETMY oplev power supply dead
|
Mon Apr 30 21:24:43 2012, Koji, Update, SUS, ETMY oplev power supply dead
|
Mon Apr 30 22:41:34 2012, Jenne, Update, SUS, ETMY oplev power supply dead
|
Fri May 18 11:19:17 2012, steve, Update, SUS, ETMY oplev laser is dead
|
Tue May 22 08:03:01 2012, steve, Update, SUS, ETMY oplev gets new laser
|
Tue May 29 15:55:22 2012, steve, Update, SUS, ETMY oplev spot size reduced 
|
Tue May 29 21:34:08 2012, Jenne, Update, SUS, ETMY oplev spot size reduced
|
Wed Jun 6 14:36:58 2012, steve, Update, SUS, ETMY oplev work finished
|
Mon Oct 1 17:03:01 2012, steve, Update, SUS, ETMY oplev relayed
|
|
Message ID: 6710
Entry time: Tue May 29 21:34:08 2012
In reply to: 6706
|
Author: |
Jenne |
Type: |
Update |
Category: |
SUS |
Subject: |
ETMY oplev spot size reduced |
|
|
Quote: |
Quote: |
Quote: |
The typical sign of a dying gas laser is that it glows for a few minutes only. The power supplies are fine.
Two new JDS - Uniphase 1103P lasers ( NT64-104 ) arriving on Monday, May 21
|
Yesterday I swapped in new He/Ne laser with output power 3.5 mW The return spot on qpd is large ~6mm in diameter and 20,500 counts
The spot size reduction require similar layout as ETMX oplev.
|
The oplev path is relayed and the spot size on the qpd is reduced. I still have to clean up and replace "Miki Mouse" lens holder.
|
Flipped the sign on the ETMY oplev servo gain, since it was wrong. (It was "-" for both, now it is "+" for both) |