Pfis commissioning and transition to operations
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PFIS Commissioning and transition to Operations. Main PFIS Commissioning Steps. Setup/ Test on delivery to SAAO Setup/ Test in spectrograph room on delivery to Sutherland Mount on tracker and integrate with telescope Day tests on tracker Night time commissioning

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PFIS Commissioning and transition to Operations

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Pfis commissioning and transition to operations

PFIS Commissioning and transition to Operations

SSWG - Commissioning


Main pfis commissioning steps

Main PFIS Commissioning Steps

  • Setup/ Test on delivery to SAAO

  • Setup/ Test in spectrograph room on delivery to Sutherland

  • Mount on tracker and integrate with telescope

  • Day tests on tracker

  • Night time commissioning

  • Shared risk science as modes commissioned

  • Handover to SALT

SSWG - Commissioning


Strawman schedule

Strawman Schedule

Assumes: 50% efficiency on 50% of nights

SSWG - Commissioning


Transitions between steps

Transitions between Steps

  • Success criteria defined in advance

  • Review process involving Project and PFIS team makes formal decision to proceed

  • Partial steps encouraged when feasible

  • Basis for decision and issues are recorded for inclusion in final commissioning report

SSWG - Commissioning


Telescope readiness

Telescope Readiness

  • Before mounting Payload: Utilities (especially those relating to instrument health and safety) & calibration facilities

  • For on sky tests: Ability to offset to 1 arcsec or better to position objects in slits, produce images of ~2 arcsec, and hold DIQ to 10% for 5 minute track.

SSWG - Commissioning


Early sky tests

Early Sky Tests

  • Be aware of need to separate PFIS problems from those associated with telescope--need both teams available.

  • Consider what tools needed to effectively resolve interface problems

  • Recognize this phase is expensive in terms of peoples’ time; night work is a drain and is difficult to sustain for long times

SSWG - Commissioning


Test data analysis

AT SALT:

Adequate computers & people

Basic software installed

Good communication of results and test plans

ELSEWHERE:

Basic instrument information--in advance

Rapid analysis of shared risk science essential to provide commissioning feedback

Test Data Analysis

SSWG - Commissioning


Main commissioning effort

Main Commissioning Effort

  • Telescope + PFIS work together with reasonable reliability--want tests to focus on PFIS

  • Work to be done by observational mode; modes and priorities announced in advance to SALT

  • Consider role of data analysis support as well as on site testers

  • Completion of mode commissioning decided after formal discussion with Project establishing specs have been met

SSWG - Commissioning


Shared risk science

Shared Risk Science

  • Shared risk science tied to specific PFIS modes and is proposed to SALT in advance of commissioning

  • Proposals test for the first time the observatory proposal process -> queue

  • Shared risk science carries responsibility to promptly reduce data and when possible to contribute to development of data reduction and analysis tools for SALT

  • Programs to be executed prioritized by Director in consultation with PFIS PI to meet goals of verifying PFIS capabilities and demonstrating early science from SALT

SSWG - Commissioning


Shared risk science1

Shared Risk Science

  • Shared risk science observing time will be limited during commissioning and will begin at very low levels so SALT consortium expectations need to be managed. This is likely to take longer than most prefer

  • Shared risk users are expected to write up short reports on their experience for posting on the web as background for SALT consortium members

  • Published shared risk data will include commissioning and instrument team members deemed appropriate by the Project Director and PFIS PIs.

SSWG - Commissioning


Pfis handover

PFIS Handover

  • Follows commissioning of major modes and successful shared risk science demonstrations in some areas

  • Implies that direct attention of PFIS team not needed to continue commissioning--thus training and documentation key factors

  • Handover made on recommendation of status review with key milestones passed

  • Consider how to phase handover with respect to science usage, e.g.,modified shared risk after handover.

SSWG - Commissioning


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