LIGO Weekly Report for the week of 14 August - 18 August 2017

LSC Activities LIGO Laboratory Administration Computer Security LIGO Hanford Observatory (LHO) and Interferometer Operations LIGO Livingston Observatory (LLO) and Interferometer Operations Engineering Data Analysis and Astrophysics LabWide Activities
Laboratory Computing Advanced LIGO
Past Weekly Reports

The monthly LIGO Staffing Committee meeting will preempt the Executive Committee meeting this coming Monday

Calendar of future Executive Committee Meetings

LSC Activities
David Shoemaker (Laura Cadonati)

Business as usual.

LIGO Laboratory Administration
Property Administration
Nichole Washington
Procurements and Subcontracts Management
Eric Garcia

Eric Garcia - CIT, LHO and LLO

Gina Salone CIT, LHO and LLO

Melanie McCandless LLO

Technical Writing Sevices
Kim Burtnyk
General Business Services
Julie Hiroto

Computer Security
Randy Trudeau (Ryan Blair)



LIGO Hanford Observatory (LHO) and Interferometer Operations
General Operations
Michael Landry
Detector Maintenance/Operations
Vernon Sandberg


Betsy Weaver


Jeff Kissel

Opto-mechanical Systems

Jason Oberling
Optical Lever

Information Technologies
Jonathan Hanks
H1 Commissioning
Daniel Sigg (Keita Kawabe)

No commissioning due to O2.

Detection Coordination
Keita Kawabe

H1 continues to run with an average of 50Mpc BNS range. The duty factor from Aug/11/2017 00:00:00 to Aug/18/2017 00:00:00 UTC was about 80%.

ETMX suspension power supply failed on Saturday, causing a series of troubles (alog 38157 and 38162). The power supply was swapped (alog 38164).

LIGO Livingston Observatory (LLO) and Interferometer Operations
General Operations
Richard Oram

Observing Run #2

LLO achieved a weekly uptime performance (Weds-Weds) of just under 77% @ around 105 Mpc BNS range. Main causes of time loss this week were due to commissioning, lock acquisition, and corrective maintenance.

Recall that O2 commenced 10:00 am CT Nov 30th 2016. As of Friday, (37+ weeks or 5974 hours) into O2, Overall L1 operation has achieved a cumulative uptime of around 60.9%.

L1 cumulative uptime since the start of O2 is shown in the very useful performance charts

O2 summary of Observatory time accounting

Observing Time Loss due to HW/SW/ procedural faults

Summary of LLO Corrective Maintenance issues that have caused Observing Time Loss

We lost about 3 hours of observing time this week due to faults that required corrective maintenance.

8761 LLO Operations LLO Electronics general 1 CLOSED DUPLICATE Beckhoff Module in the MSR failed.

8683 LLO Operations LLO Detector Enginee general 2 CLOSED DUPLICATE l1susb123 IOP DACKILL issue again

Observatory Computerized Maintenance Management.

FRS - Corrective Maintenance

Key Performance Indicator dashboard of issues tracked in the FRS.

Tuesday Maintenance Period Work Permits opened and or executed this week.

FAMIS- Preventive Maintenance

Tuesday Work Permit Summary

LLO Tuesday Preventive Maintenance Work Orders 2017 (FAMIS)

L1 Detection Coordination
Brian O'Reilly

O2 Run

L1 duty factor has been above 75% with a BNS range of ~100 Mpc.

LSC Fellows

Elvis Ferreira

Maggie Tse

Haocun Yu

At MIT most of this week.

Vacuum Group
Scott Mccormick (Richard Oram)

Reporting for the Vacuum Team, Harry Overmier and Scott McCormick


Detector Group
Janeen Romie (Richard Oram)

Reporting for the LLO Detector Engineering Group: Stuart Aston, Matt Heintze, Adam Mullavey, Arnaud Pele

Control Room Operators
Gary Traylor (Richard Oram)

Reporting for:

Gary Traylor, Mike Fyffe, Doug Lormand, Joe Hanson, Danny Sellers, Jeremy Birch, Tom Evans, William Parker

Doug Lormand, Jeremy Birch, William Parker, Mike Fyffe, Joe Hanson, Tom Evans, Danny Sellers

Gary Traylor

William Parker

Mike Fyffe

Joe Hanson

Danny Sellers

Computing and Electronics (CDS, etc.)
Keith Thorne

Michael Thomas

Alyssa Bramley

Keith Thorne

Paul Corban

Carl Adams, Michael Laxen

Education and Outreach
William Katzman

Mechanics, Optics & Vacuum
Norna Robertson
Fabrice Matichard

Squeezer engineering:

Alena Ananyeva
Control and Data Systems
Rich Abbott
  1. Luis has designed a new circuit for extraction of 3.125MHz signal from OMC DCPD to be used in the Squeezer. He is at the stage of CAD schematic layout now.
  2. Finished the major work on the Squeezer wiring diagram. Need to seed with location data for cable list.
  3. Re-did the layout for the demodulator power interface board and submitted it for manufacture. This board will provide whitened monitors of I and Q signals associated with the 2-channel FET I/Q demodulator chassis.
Remote Access
NDS2 (client, server, and server infrastructure)
Jonathan Hanks

Data Analysis and Astrophysics LabWide Activities
Alan Weinstein
Caltech (CIT)
Kent Blackburn

Laboratory Computing
LIGO Analysis and Open Data
Kent Blackburn (Jonah Kanner)
LDAS Software Systems
Ed Maros




LDAS System Administration
Juan Barayoga
Phil Ehrens
Dan Kozak
Dan Moraru
Alyssa Bramley
Michael Thomas
General Computing
Melody Araya



Mike Pedraza
Veronica Kondrashov
Larry Wallace
Jonathan Hanks
Matthew Cowart
Fred Donovan

Advanced LIGO
Data Computing System (DCS)
Stuart Anderson
Data Analysis Optimization
Peter Couvares
Joshua Willis
Data Analysis Optimization Operations supported
Sharon Brunett
For additional information about this report, contact Albert Lazzarini