Subsystem Acceptance and Verification in Commissioning Chuck Claver

Subsystem Acceptance and Verification in Commissioning Chuck Claver LSST Systems Scientist LSST All-Hands Meeting Bremerton August 18, 2015

Outline • Subsystem Acceptance Plans – Camera – Telescope – Data Management • Compliance evaluation during the Commissioning Phase • Operations Readiness • Further detailing of the Commissioning Plan 8/18/2015 LSST Systems Engineering 1

Acceptance Data Package • Relevant requirements • Compliance assessment & certification No ca te: ac n b N ce e v ot pt er all an ifi re ce ed qu a ir. t t em he e tim nt e s of – Specifications and interface requirements – Non-conformance reports, change requests, deviation approvals – Verification Matrix – Verification and acceptance test plans and procedures – Qualification and/or acceptance test results – Calibration and certification requirements records – Material and/or process certifications • • • Safety documentation and constraints As-built technical documentation Shipping, handling and storage plans Spares and/or overage inventory Operations, maintenance, and repair procedures and manuals How we get here will be unique to each subsystem. 8/17/2015 LSST Systems Engineering 2

Systems Engineering tracks subsystem development with the integrated project schedule Telescope assembly, integration & test. Final assembly and testing done on-site Telescope development ends with significant onsky optical testing. Telescope Ready for I&T and Integration Readiness Review Oct. 2019

Telescope Acceptance Plan The telescope is made up mostly from large contracted subsystems that are integrated on-site. There is no “pre-shipment” review. • PSE will observe early subsystem acceptance tests/reviews with the T&S team. • T&S team will have on sky testing during final stages of Telescope & Site Integration: – On-axis optical testing with Shack-Hartmann WFS – PSE will participate in and observe optical testing as part of T&S acceptance • Integration Readiness and T&S Acceptance Review at the conclusion of on-axis testing. Compliance assessment with respect to the Telescope & Site Subsystem Requirements (LSE-60): – – – Optical performance – on-axis only Dynamic performance – Telescope + Dome Telescope telemetry is being recorded into the Engineering Facility Database Safety interlock system fully functional Functional control with TCS and OCS fully operational Etc… 8/18/2015 LSST Systems Engineering 4

Systems Engineering tracks subsystem development with the integrated project schedule Camera assembly, integration and test. Camera pre-ship acceptance at SLAC Feb 2020. Camera re-verification in Chile Full System I&T Start Aug 2020.

Camera Acceptance Plan The LSST Camera will be tested and verified fully assembled at SLAC and delivered the Observatory as a complete unit. • PSE will observe final Camera verification tests at SLAC • Compliance assessment with respect to the Camera Subsystem Requirements (LSE-59) at the Pre-shipment review. • PSE will support and coordinate the re-verification of the Camera at the LSST Summit Facility • At the conclusion of the summit re-verification the PSE will conduct a Camera Integration Readiness Review: – Camera mounted to Top End integration hub on transport cart – CCS is communicating with the OCS and accepting commands – Camera DAQ connected to network and able to send data to Base Facility Archive and NCSA – Camera telemetry is being recorded in to the Engineering Facility Database – Filter swap demonstrated – Camera safety interlock system fully operational 8/18/2015 LSST Systems Engineering 6

Systems Engineering tracks subsystem development with the integrated project schedule DMS integration, test and release. R 8. 1 R 9. 1 DMS Ready for Early I&T Start. R 10. 1

Data Management Acceptance Plan Software and infrastructure capabilities from Data Management follows a phased approach aligned with the Project needs during Commissioning per LDM-240. • Phase 1 of DM acceptance will follow Release 8. 0/8. 1 with readiness review of software and infrastructure needed to support Com. Cam. – Compute and networking infrastructure limited • Phase 2 of DM acceptance will follow Release 9. 0/9. 1 with readiness review of software and infrastructure needed to support the full LSST Camera. – Compute and networking infrastructure full scale • Phase 3 of DM acceptance will follow Release 10. 0/10. 1 with a readiness review of software and infrastructure needed to support Science Verification and initial Survey Operations. Details still needs coordination with DM 8/18/2015 LSST Systems Engineering 8

Commissioning Phases • Each phase has a hardware driven period followed by a data/software driven period • A readiness/status review will govern the transition between phases: – Unverified subsystem requirements will be reassessed – System status and compliance assessment from previous phase will be reviewed – System verification & test plans for the new phase will be reviewed • Transition from hardware to software/data driven periods and will be governed by intermediate status reviews. • Reviews will assess compliance with all requirements and interfaces as appropriate: – Early I&T phase driven by verification of OSS and Subsystem Interface Requirements – Full System I&T phase driven by verification of the LSR, OSS and Subsystem Interface Requirements. – Science Verification phase driven by verification and characterization of LSR/SRD survey performance requirements • Transition to Operations marked by the Operations Readiness Review

Commissioning Phases • 6 month (+4 m optional) early System I&T – Interface testing & Active Optics Control Testing – Calibration Operations and Cal. Data Products Pipeline Processing, Com. Cam – Scheduler Driven Operations Testing – DM Algorithm Development • 7 ½ month Camera-Telescope-DM integration – Final System Interface Verification – Telescope-Camera Integration and Test – DM Pipeline Testing with Full FPA Data • 5 month Science Verification – Operations Readiness mini-survey using Initial Survey Cadence – Pre-Operations Engineering Com. Cam

em La n io tr a on s ec t n St ct b at T is On -s est tic ky al M O ne sk a. O ny Sk Si M m y. O ul. . n- Da at Sk ta io Ex y D + A n na a tr ap ta ly +. . . ol S at i ed mu l. O n-. . Sk y. . . ire D D sp In Occurrences LSR/SRD verification matrix will be filled in with compliance & characterization data at ORR LSE-79 25 20 15 10 5 0

Other Requirements for Operation Readiness • The project team shall demonstrate that the integrated LSST system can collect and process time-domain Level 1 data products, including the generation and distribution of alerts; • The project team shall demonstrate that the integrated LSST system can monitor and assess the quality of the data as it is being collected; • The project team shall demonstrate that relevant metadata are being collected and archived; • The project team shall deliver a complete set of documented operational procedures and supporting technical documents needed to operate the LSST as a scientific facility for the purpose of conducting a 10 -year survey; and • The project team shall deliver all reports documenting the as-built hardware and software including: drawings, source code, modifications, compliance exceptions, and recommendations for improvement.

Developing the details going forward Detailed commissioning activities and procedures must be integrated with the system verification plans. We will be looking for someone to help in FY 16 Associate Commissioning Scientist (TBD) The Large Synoptic Survey Telescope (LSST) is looking for a scientist to help the project develop and validate the tests, procedures and analysis needed in the Commissioning Phase of the project. This person will work with Project Systems Engineering and Systems Scientist to take the activities and tests identified as part of the system verification and commissioning plans and develop detailed procedures that will be used at the telescope. It is expected that this person would also work with the project simulations team to validate these procedures using the Project's simulations tools and framework. Further, the person is expected to develop the corresponding analysis pipelines and visualization tools using the LSST's Data Management software stack and validate their effectiveness. The end goal is throughout the detailed development of the LSST's commissioning plan critical tasks and analyses are validated through simulations and that the analysis "toolbox" needed for commissioning is developed along the way. D r a f t This position requires a Ph. D in Astronomy or a related field. It also requires strong coding proficiency in python and familiarity with working in relational database systems. The position is sited initially in Tucson for the first 4 years, but will be taken to Chile once commissioning begins. Previous experience with commissioning astronomical instruments and/or telescopes is desired.