LSST Commissioning Status Update Overview Charles Chuck Claver

LSST Commissioning Status Update & Overview Charles (Chuck) Claver LSST System Scientist SAC Meeting March 5, 2017 SAC meeting • March 2017 1

Outline NSF/DOE Review Summary Commissioning Team Organization Phases of Commissioning: ○Phase 1: Early System AI&T w/Com. Cam ○Phase 2: Full System AI&T w/LSSTCam ○Phase 3: Science Verification Current commissioning data plan SAC meeting • March 2017 2

NSF/DOE Review Summary SAC meeting • March 2017 3

14 Member Review Committee Joint DOE/NSF Review of Large Synoptic Survey Telescope (LSST) Commissioning January 24 -26, 2017 Chair: Helmut Marsiske, DOE/HEP SC 1 SC 2 Pipelines, Algorithms, Preparations, System I&T Science Characterization *Tony Travouillon, Caltech *Eugene Magnier, U. Hawaii Alistair Walker, NOAO Bruce Berriman, Caltech Klaus Honscheid, OSU Ian Evans, Harvard Rebecca Bernstein, Carnegie Jeff Kern, NRAO SC 3 Cost & Schedule *Dean Hoffer, FNAL Richard Simon, NRAO SC 4 ES&H *Jack Salazar, LBNL SC 5 Management & Organization *Michael Levi, LBNL Brenda Dingus, LANL Ron Ray, FNAL SAC meeting • March 2017 4

Material Presented ●WBS for complete System AI&T and Commissioning scope ●Management Plan with Commissioning Org-chart ●Integrated (NSF+DOE) resource loaded activity schedule ●Revised LSST System AI&T and Commissioning Plan document (LSE-79) ●Descriptions and story boards of activity sequences covering ○Early preparatory work ○Camera refrigeration path finders ○Early System AI&T with Com. Cam ○Full System AI&T with LSSTCam ○Science Verification ●Budget and FTE summaries SAC meeting • March 2017 5

Committee’s Response to Charge Items Each subcommittee was assign a subset of charge items. Subcommittee Charge Item SC 1 SC 2 SC 3 SC 4 SC 5 Yes Yes - Yes 1 Technical Scope & Requirements 2 Management & Organization - - Yes 3 Cost and Schedule - - Yes - - 4 Transition to Full Operations Yes* Yes Yes 5 Environment, Safety & Health - - - Yes - 6 Response From Past Reviews Yes Yes Yes * Committee noted that the transition to operations was presented at a high level, but was appropriate at this stage. SAC meeting • March 2017 6

Recommendation Summary SC 1: Preparations and System AI&T – 9 recommendations SC 2: Pipelines, Algorithms & Science Characterization – 10 recommendations SC 3: Cost and Schedule – 2 recommendations SC 4: Environment, Safety and Health – 3 recommendations SC 5: Management and Organization – 4 recommendations Summary Statement: The Committee agrees that the Commissioning Project is at the appropriate level of maturity for this stage (CD-1 -like) and should proceed. SAC meeting • March 2017 7

Commissioning Team Organization SAC meeting • March 2017 8

Commissioning organization consists of 3 teams Composition of the Commissioning teams will vary over time depending on the focus of activities. SAC meeting • March 2017 9

Core Commissioning team Primary responsibilities: ○ Primary technical analytic arm of the commissioning team ○ Preparatory work defining verification tests and procedures ○ Validating procedures and developing analysis scripts through simulations ○ Core component of team has significant presence in Chile Composition (~12 FTEs): ○ Systems engineering assignees ○ Subsystem scientists (once activities are underway) ○ Ad-hoc scientists from project and DOE support ○ New hires SAC meeting • March 2017 10

Science Verification Team Primary responsibilities: ○ Primary scientific analysis arm of the commissioning team ○ Preparatory work designing science verification plans ○ Validating procedures and developing analysis scripts through simulations ○ Distributed team over multiple project sites ○ Pipeline validation Composition (~12 FTEs) : ○ Project Scientist ○ Tucson based scientists ○ UW Science Verification and Validation Team (SVVAT) ○ DMS assignees to commissioning effort ○ DOE Scientists SAC meeting • March 2017 11

Technical Coordination Team Primary responsibilities: ○ Primary interface between Commissioning Team and subsystem teams ○ Coordinate with System scientist the prioritization of commissioning activities and on-going operation and maintenance needs ○ Responsible for developing response plans to emergent issues discovered by the Commissioning Team Composition (~6 FTEs): ○ T&S AI&V Lead ○ Camera AI&V Lead ○ DMS AI&V Lead ○ T&S Summit Manager ○ T&S Safety Coordinator ○ + others… SAC meeting • March 2017 12

Commissioning Activities SAC meeting • March 2017 13

The Commissioning Plan is structured in phases • Phase 0: Pre-Commissioning - Test procedure definition - Test analysis script development using the LSST code base - Procedure & script validation with simulation tools - Special hardware/software development - Subsystem oversight an monitoring Com. Cam + integrating structure • Phase I: Early System AI&T with Com. Cam (6 months) - early interface testing - procedure verification - telescope alignment and AOS control - sub-scale DM pipeline testing - early science verification tests • Phase II: Full System AI&T with Science Camera (7 months) - camera-telescope integration, alignment & AOS control - full-scale DM pipeline testing - full-scale science verification test • Phase III: Science Verification (5 months) - mini-Survey 1 focus on Alert Production - mini-Survey 2 focus on 10 -year depth - Data release processing LSSTCam + integrating structure on transport cart SAC meeting • March 2017 14

Commissioning Activity Sequencing by WBS Phase 0 Preparations Phase 1 Early System AI&T w/Com. Cam Phase 2 Full System AI&T w/LSSTCam Phase 3 Science Verification 3 planned sustained observing campaigns SAC meeting • March 2017 15

Phase 1 – Com. Cam – Telescope AI&T 06 C. 02. 03. 04 • A single raft camera operating as a surrogate of the full science camera. • Utilizes as many LSSTCam system interfaces as possible: ○ CCS-OCS: Command/Control ○ SDS-DM: Image data delivery ○ WDS-TCS: Wavefront sensing ○ GDS-TCS: Guiding Early interface testing and control systems verification Electro-optical tests, optical alignment and preliminary active optics verification Sustained observing campaigns and operations optimization Conceptual layout of Com. Cam with Camera surrogate mass integrated to rotator interface and telescope integrating structure. SAC meeting • March 2017 16

Phase 2 – Camera-Telescope AI&T 06 C. 02. 04. 02 Pre-LSSTCam installation procedure and safety checkout, physical integration and functional tests LSSTCam start-up and OCS/TCS/CCS interface verification LSSTCam electro-optical tests, optical alignment and final active optics verification LSSTCam - Telescope integration focus includes: • • Full scale sustained observing campaigns and operations optimization Physical installation and basic functional checkout of LSSTCam Final calibration and verification of active optics look-up tables and optical feedback Integrated system requirements verification (OSS) OCS sequencing & functional interactions with scheduler driven observing SAC meeting • March 2017 17

Phase 2 – Science Verification mini-Surveys: 06 C. 02. 04 Image differencing template acquisition Template processing and & generation Level 1 Alert Production Verification Level 2 10 -year Equivalent Science Verification focus includes: • • Final verification of Alert Production Final verification of 10 -year data release processing (over limited area) Verification of the LSST Science Platform services (internal users) Exercising the SDQA tools SAC meeting • March 2017 18

Data Production Milestones SAC meeting • March 2017 19

Sustained Observing Periods during Commissioning SAC meeting • March 2017 20

Candidate reference fields/area for LSST Commissioning Observations Additional input welcome. What early observing can be done to further establish reference fields? SAC meeting • March 2017 21

Mini-Survey 1: Wide-Area Alert Production Objectives: ● Template building with DRP pipeline ● Level-1 processing, real-time alert generation ● Testing survey progress over wide area, validating observation simulations Observations: ● ~1600 deg 2 x 15 visits x 6 filters x 2 phases (~30, 000 visits, ~40 nights) ○ In each phase, cover ~10% of footprint with exposure equivalent to 1 year of Wide-Fast-Deep survey ○ Long equatorial stripe covering range of source densities ● Phase 1: Observations for template generation (3 weeks) ● Phase 2: Re-observing area for alert production (3 weeks) ● Phases separated by 6 weeks to allow for astrophysical evolution and template processing (mini-survey 2 scheduled in-between phases) 1 visit = 9. 6 deg 2, 825 visits per field in 10 years (~1 night per field) ~2, 000 fields in the main deep-wide fast survey, 2. 5 million total SAC meeting • March 2017 22

Mini-Survey 2: 10 -year Depth Survey Objectives: ● Focus on Level-2 data products at full survey depth ● Data quality characterization beyond the SRD through analyses that are closely tied to main science themes ○ e. g. , source detection completeness, star-galaxy separation, photo-z, weak-lensing null tests, cluster weak lensing ● Template generation and real-time alert production; these high-cadence observations will form an exceptional dataset for detailed characterization of transient, variable, and moving object alerts Observations: ● ~30 fields x 825 visits in 6 filters (~25, 000 visits, ~30 nights) ○ ~300 deg 2 to full depth of Wide-Fast-Deep survey (~1% of footprint) ● Select fields to overlap with external reference datasets ● Scheduler used to optimize data quality across fields SAC meeting • March 2017 23

Plans Going Forward SAC meeting • March 2017 24

Looking further ahead now through 2020 Now - 2017: • Assemble nucleus of Core Commissioning and Science Verification Teams • Unpacking and detailing the commissioning activity plan: ○ Define start and end conditions for each activity in the plan ○ Identify verification events and tests that will be conducted during each activity ○ Identify and develop all procedures needed by an activity to go from start to finish ○ Perform hazard analysis on each identified procedure ○ Validate key procedures through simulations and develop associated analytical tools • Commissioning team to work with the DM team to produce working prototypes of data visualization tools for commissioning via early prototype of the LSST Science Platform SAC meeting • March 2017 25

Looking further ahead to now through 2020 2018: • Grow the Core Commissioning and Science Verification team to support increased activity load with internal assignments and new hires. • Hold a CD-2 like Commissioning FDR (circa Spring 2018) • Develop and implement data analysis tools needed to support all commissioning tasks and procedures to the 75% completeness level utilizing the LSST Science Platform tool to the extent possible. • Verify commissioning tasks, procedures and analysis tools through simulations to the 75% completeness level. 2019: • • • Complete remaining analysis tool development. Complete remaining task, procedure and tool verification using simulations. Prepare for and hold Commissioning Readiness review (internal). Continue team growth with internal assignments and new hires. Transition core Commissioning Team to Chile (Late 2019). SAC meeting • March 2017 26

End of Presentation SAC meeting • March 2017 27