GLAST LAT Project ISOC Peer Review March 2, 2004

Document: LAT-PR-03213-01 Section 5 LAT Operations Facility 1

GLAST Large Area Telescope:GLAST Large Area Telescope:

Section 5: LAT Operations Facility

David LungStanford Linear Accelerator CenterISOC Subsystem Manager

dlung@slac.stanford.edu

Gamma-ray Large Gamma-ray Large Area Space Area Space TelescopeTelescope

GLAST LAT Project ISOC Peer Review March 2, 2004

Document: LAT-PR-03213-01 Section 5 LAT Operations Facility 2

LOF Layout (Initial Concept)LOF Layout (Initial Concept)

• Primary requirements– LOF team (approx. 8)

– SOG/SAS (approx. 2 – rest of the team is in nearby office)

– Visiting scientist

– Storage area

Test Bed/FSW

LOFOperations

Center

78' - 0"

Storage

31' -

6"

• Secondary requirements– Ability to house LAT collaborators

during launch and initial 60 days operations

GLAST LAT Project ISOC Peer Review March 2, 2004

Document: LAT-PR-03213-01 Section 5 LAT Operations Facility 3

Potential Sites – SLAC CampusPotential Sites – SLAC Campus

• Prior to launch and 1st year sky survey, the LOF is located on the SLAC campus

• Possible facility sites are:

Kavli BuildingKavli Building Central LabCentral Lab

FSW Test Bed is located FSW Test Bed is located within the Central Labwithin the Central Lab

GLAST LAT Project ISOC Peer Review March 2, 2004

Document: LAT-PR-03213-01 Section 5 LAT Operations Facility 4

Possible Sites – SU CampusPossible Sites – SU Campus

• Sometime after the 2nd year, the LOF is to transition onto SU campus

• Potential sites are:– Varian Building– Kavli Building

GLAST LAT Project ISOC Peer Review March 2, 2004

Document: LAT-PR-03213-01 Section 5 LAT Operations Facility 5

Other RequirementsOther Requirements

• The LOF requirements are captured in LAT-SS-01783– All workstations at the LOF are PC based (either Windows or Linux)

• No requirements for real-time commanding operations, all real-time commanding is performed at the MOC

• Command files are built off-line and verified by the test bed• Primary requirements for workstations are:

– Display of housekeeping telemetry– Display event messages, including command files– Telemetry processing control– Alarms and notifications– Storage of daily and weekly trending reports

– Local housekeeping telemetry storage• Up to 7 days on local workstations

– Expect approximately 0.6 GB/day, 4.2 GB/week– With today’s technology of 300 GB disk in PC’s, that’s 71 weeks

worth of housekeeping telemetry– Typical connections

• Internet (LAN and/or WAN)• Phone/Fax• Video

– Presentation in section 6 addresses the software and tools for LAT operations