aLIGO, System Reliability & Availability

Document #:: LIGO-E1300645-x0
Document type:: E - Engineering documents

Abstract:: This DCC entry serves as a collection of links to documents regarding, or related to, the reliability and availability (up time or duty cycle) of the Advanced LIGO interferometer system.

Files in Document:: None

Topics:

Authors:

Notes and Changes:

iLIGO uptime statistics for reference (not aLIGO)
S6 uptime (availability) statistics, and downtime causes:
H1, during the S6 run
searching: H1, at conclusion of S6 run
searching: L1

S5 uptime (availability) statistics and downtime causes:
L1, last 2 months of S5 (76% science mode)
S5 statistics for LHO & LLO are given in T080160

Reference for Table:
N.B.: T0900503 indicates a duty cycle > 80% for last 9 months of S5.

Science Run	H1	L1
1st year S5	73%	60%
1st year S6	48%	42%
estimated 1st year S6 without commissioning, with afternoon shift	68%	62%

S5 L1 downtime pie charts (evolution):

L1 Period	uptime
3/6/2006 - 4/16/2006	48% (commissioning)
11/23/2005 - 4/16/2006	54%
4/17/206 - 5/12/2006	48% (69% w/o commissioning)
11/23/2005 - 5/12/2006	53%
5/12/2006 - 6/19/2006	73%
11/23/2005 - 6/19/2006	57%
6/19/2006-7/19/2006	75%
11/23/2005 - 7/19/2006	59%
10/25/2006 - 1/8/2007	66%
11/24/2005 - 1/8/2007	62%
1/8/2007 - 3/14/2007	69%
11/24/2005 - 3/14/2007	63%
8/2/2007 - 10/1/2007	76%
11/23/2005 - 10/1/2007	67%

Related Documents:

Referenced by:

LIGO Document E1300645-x0

aLIGO, System Reliability & Availability