40m
QIL
Cryo_Lab
CTN
SUS_Lab
TCS_Lab
OMC_Lab
CRIME_Lab
FEA
ENG_Labs
OptContFac
Mariner
WBEEShop
|
40m Log |
Not logged in |
 |
|
Wed Oct 12 22:51:26 2016, Koji, Update, General, Clipping could not be improved by the PZTs - NEED ANOTHER VENT
|
Thu Oct 13 00:23:54 2016, ericq, Update, VAC, Pre-vent prep
|
Thu Oct 13 09:30:38 2016, Steve, Update, General, vent 79 is happening 
|
Thu Oct 13 16:48:34 2016, Steve, Update, VAC, vent 79 is completed
|
Thu Oct 13 19:28:14 2016, gautam, Update, General, in-air alignment
|
Fri Oct 14 10:31:53 2016, gautam, Update, General, doors are off ITMY and BS/PRM chambers
|
Fri Oct 14 18:33:55 2016, gautam, Update, General, AS clipping investigations 7x
|
Mon Oct 17 22:45:16 2016, gautam, Update, General, AS beam centered on all OMs 7x
|
Tue Oct 18 18:56:57 2016, gautam, Update, General, OM5 rotated to bypass OMC, green scatter is from window to PSL table   
|
Wed Oct 19 16:41:55 2016, gautam, Update, General, Heavy doors back on 8x
|
Thu Oct 20 09:17:08 2016, Steve, Update, VAC, Pumpdown 80 has started   
|
Thu Oct 20 15:59:52 2016, Steve, Update, VAC, Pumpdown 80 has completed  
|
Fri Oct 21 02:06:20 2016, gautam, Update, General, IFO recovery
|
Mon Oct 24 11:39:13 2016, gautam, Update, General, ALS recovered 
|
Fri Oct 21 09:28:21 2016, Steve, Update, VAC, Vac Normal reached
|
Wed Nov 23 11:32:13 2016, Steve, Update, VAC, TP3 drypump replaced again
|
Fri Nov 10 08:52:21 2017, Steve, Update, VAC, TP3 drypump replaced
|
Fri Feb 16 15:57:58 2018, Steve, Update, VAC, TP3 drypump replaced
|
Thu Jul 12 16:18:22 2018, Steve, Update, VAC, Vent preparations 
|
Thu Jul 12 23:59:14 2018, gautam, Update, General, Vent objectives and prep
|
Fri Jul 13 02:52:11 2018, gautam, Update, General, Vent objectives and prep
|
Fri Jul 13 17:13:45 2018, Koji, Update, General, Vent objectives and prep
|
Fri Jul 13 18:01:13 2018, gautam, Update, General, Low power MC
|
|
Message ID: 13637
Entry time: Fri Feb 16 15:57:58 2018
In reply to: 13423
|
Author: |
Steve |
Type: |
Update |
Category: |
VAC |
Subject: |
TP3 drypump replaced |
|
|
The forline pressure of TP3 was 399 mTorr
It was replaced this morning at TP3 controller 134,638hrs with the "failed TP2 station" drypump. The foreline pressure now at TP3 is 100 mTorr at 6 hrs of operation.[ at day 3 63 mT ]
IFO pressure at CC Hornet 7.9e - 6 Torr
Valve configuration: vacuum normal as TP3 is the forepump of the Maglev & the annuloses are not pumped
Quote: |
PSL shutter closed at 6e-6 Torr-it
The foreline pressure of the drypump is 850 mTorr at 8,446 hrs of seal life
V1 will be closed for ~20 minutes for drypump replacement..........
9:30am dry pump replaced, PSL shutter opened at 7.7E-6 Torr-it
Valve configuration: vacuum normal as TP3 is the forepump of the Maglev & annuloses are not pumped.
Quote: |
TP3 drypump replaced at 655 mTorr, no load, tp3 0.3A
This seal lasted only for 33 days at 123,840 hrs
The replacement is performing well: TP3 foreline pressure is 55 mTorr, no load, tp3 0.15A at 15 min [ 13.1 mTorr at d5 ]
Valve configuration: Vacuum Normal, ITcc 8.5E-6 Torr
Quote: |
Dry pump of TP3 replaced after 9.5 months of operation.[ 45 mTorr d3 ]
The annulosses are pumped.
Valve configuration: vac normal, IFO pressure 4.5E-5 Torr [1.6E-5 Torr d3 ] on new ITcc gauge, RGA is not installed yet.
Note how fast the pressure is dropping when the vent is short.
Quote: |
IFO pressure 1.7E-4 Torr on new not logged cold cathode gauge. P1 <7E-4 Torr
Valve configuration: vac.normal with anunulossess closed off.
TP3 was turned off with a failing drypump. It will be replaced tomorrow.
|
All time stamps are blank on the MEDM screens.
|
|
|
|