sandrine thomas (t&s project scientist) & telescope and site team
TRANSCRIPT
TELESCOPE AND SITE UPDATE
Sandrine Thomas (T&S Project Scientist) &
Telescope and Site Team
2
Telescope and Site Subsystem
TMA(EA)
Hexapods(Moog/CSA)
M1M3(SOML)
M1M3 Mirror Cell
(TBD)
M2(Harris)
Dome(EIE)
Summit A&E Construction
(Arcadis/Besalco)
Base Construction
(TBD)
Auxiliary Telescope and
Calibration
Coating Plant (TBD)
Active optics SystemSoftware
Schedule
Summit Construction
DomeConstruction
MountConstruction
Dome Integration
M1M3 Cell Weldment
MountFactory Test
Mount Integration
Telescope Integration
M1M3 Assy Ship to Chile
Telescope On-Sky Testing
Summit Construction
DomeDesign
MountDesign
Dome Integration
Coating Plant Design
Mount Integration
Telescope Integration
On Summit Coatings
Telescope ComCam On-Sky Testing
M1M3 Cell Hardware
M1M3 Assy Optical Testing
M2 Cell Assy Design
Mount Fabrication
Dome Fabrication
Mount Factory Test
M2 Cell Assy Fabrication
M2 Cell Assy Optical Testing
M2 Assy Ship to Chile
Calypso Refurbishment
Calibration Instrument Fab
Calibration Instrument Test
2015 2016 2017 2018 2019 2020
Coating Plant Construction
Breakout: Monday 11am-12:30pm
4
Summit Facility Status• January 2015: Contract for construction was initiated with Besalco
Construcciones (Chilean)• Major excavation is now almost complete – after major remediation of
subsurface rock/soil conditions under the building.• Initial foundation work and raising of columns is in progress.• Major equipment approved for purchase –
electrical transformer, generator, cranes.
• Structural steel fabrication subcontract initiated.
• Work force ofover 50on site daily
5
Base Facility Status• May 2015: Requirements for Base Facility in La Serena Chile were
finalized with input from Data Management team.• Cooperation in project with AURA and NOAO-S was formalized.• Requirements for Data Center were defined by DM and T&S teams.• July 1st: Request for Proposals for Architectural and Engineering
Services was issued, proposals received. Recommendation of committee has been forwarded for approval.
• September 2015: Anticipate start of design of Base Facility
• ~ October 2016Anticipate start of construction Design concept layout from one of the Proposals
Dome Status
6
• May 2015: Design-Build Contract with European Industrial Engineering (EIE) was signed
• May 27-28: Kick-off meeting was held at EIE offices in Mestre, Italy • Early emphasis was placed on interface
to building (already in construction!) and definition of major subsystems.
Early progress has included:• Verification of mass budget for dome.
Initial finite element analysis.• Definition of mounting plates and
anchor bolts to lower enclosure.• Location and sizing of drive units
and bogies.Breakout: Monday
1:30pm-3pm
7
Telescope Mount Assembly (TMA): Preliminary Design
• Design Contractor: Empresarios Agrupados (Madrid Spain)
• Fabricator: Asturfeito (Asturias, Spain)
• LSST Telescope and Site Manager: Shawn Callahan (Tucson, Az)
Dynamic performance meets all TMA requirements.
Year Milestone Date
2015 Preliminary Design Review 80% completion
September 28-October 2
2015 Final Design review by subsystems
October 30 – December 28
2016 Azimuth track and concrete pier complete
April 15
2016 All TMA components ready for installation
December 23
2017 Factory testing review March 1
2017 All hardware delivered to port
July 15
2018 TMA assembled at site May 1
2018 TMA testing complete on site
July 15
Breakout: Monday 1:30pm-3pm
8
M1M3 Acceptance (April 10th 2015)
More information here:Collection-3272,Document-18055
Breakout: Tuesday 11am-12:30pm
SOML
- Interferometric measurements done by SOML: surface uniformity and figure accuracy for both M1 and M3 meet or exceed requirements.
- Position of M1 relative to M3 within tolerance- Radii of curvature, conic constants ….. are
within tolerance.- Existence of small additional residuals: studies
show a negligible scientific impact.
9
M1M3 Mirror Storage in Tucson
Plan to visit/inspect mirror every 1.5-2 months
May 20 2015
July 23 2015
Arrival at Storage Facility Final Placement of the mirror container
Last Inspection at Storage Facility
10
M1M3 Acceptance (April 10th 2015)
2017: Before Shipping to Chile, M1M3 + cell+mirror support system will be tested at SOML with the same interferometric testing configuration
SOML
- Interferometric measurements done by SOML: surface uniformity and figure accuracy for both M1 and M3 meet or exceed requirements.
- Position of M1 relative to M3 within tolerance- Radii of curvature, conic constants ….. are
within tolerance.- Existence of small additional residuals: studies
show a negligible scientific impact.
More information here:Collection-3272,Document-18055
Breakout: Tuesday 11am-12:30pm
M1M3 on Telescope
11
Location of the M1M3 Cell and Mirror on the Telescope
Mirror supported on Cell
12
• Mirror Wt: ~17000 kg• Total Wt (Mirror + Cell + Internals): ~53000 kg• Key systems:
Gravity support and figure control force actuators: pneumatic support actuators Hardpoint Struts to locate mirror Thermal control via cooling air injection into mirror cores
Breakout: Tuesday 11am-12:30pm
July: RFP sent out August 14th: received answersOctober: anticipates answers to the vendors
13
Mirror M2
Before shipping of the M2 mirror to Chile, the M2 mirror cell assembly (mirror+cell+mirror support system) will be tested in Rochester NY in the downward orientation, the same configuration used during ion figuring.
Breakout: Tuesday 11am-12:30pm
Sept 2017: Expected completion by Exelis
14
Hexapods & Rotator Status• Aug 11th-12th 2015: Interim Mechanical Review conducted (equivalent to
critical design review) with no significant issues determined.• Late 2016: Systems scheduled for completion
Breakout: Monday 1:30pm-3pm
FlexureEnd Joints
Strut Designed for M2 & Camera Hexapod
Coating Plant Design Review
15
• June 29th 2015: Coating Plant Design Review heldReview covered baseline designs of the cleaning and stripping equipment and the magnetron coating chamber. Requirement on the coating (both Aluminum and Silver)
• July 2015: Coating Plant System RFP. A good variety of vendors expressed interest in the project.
• Sept. 11th 2015: Vendor proposals are due
• January 2016: Expect contract award.
Breakout: Monday 1:30pm-3pm Collection-2458 in Docushare
T & S Software Status
• Integration status:– SAL software utilized successfully in CCS, DMCS and
OCS communications tests.– OCS Sequencer updated to latest device state
model, as well as commanding and scripting.– ICD conformant interface simulators for major
subsystems developed.– XML schemas developed for SAL and OCS.– LSE-70 and LSE-209 communications documents
updated and to be submitted to CCB
16
T & S Software Status
17
Breakout: Tuesday 1:30pm-3pm
17
• OCS Scheduler– Scheduler requirements document delivered.– OPSIM and Scheduler redesign of development
achieved.• TCS status:
– Development planning in progress.– SAL software delivered to contractors of Mount, Dome,
Hexapod/Rotator, M2.– Vendor ICDs updated to integration agreed model.– 3 Inner Loop Controller test stands completed.
17
1818
LSST Active Optics & Wavefront Sensing
18
LSST Active Optics System (AOS):• Maintain system alignment • Maintain surface figure on three mirrorsChallenges:• 61% Central Obstruction• f/1.23• Off-axis Distortion & Vignetting(~1.7o)• Field Dependence (covering 1.51° to 1.84°)
Camera
Secondary Mirror
Primary/TertiaryMirror
Camera
Secondary Mirror
Primary/TertiaryMirror
Degrees Of Freedom controlled by AOS• M2 hexapod rigid body positions• Camera hexapod rigid body positions• M1M3 bending modes• M2 bending modes
19
AOS status and next steps Publication of the update to the basic curvature sensing algorithm
by Bo Xin (large central obscuration, small f/number, distortion and vignetting)
Working on the Active Optics System requirements document– Wavefront Estimation Pipeline (WEP) part of WBS 4.7– Active Optics Control System (AOCS) part of WBS 4.11
WEP: 100% successfully translated from Matlab to Python Start engaging work with the DM subsystem to incorporate
optimization of the WEP in the DM framework. AOCS: algorithm is written in Matlab to be translated into Labview Include the telescope models and use PhoSim to built the look-up-
table (temperature, elevation and azimuthal angle).Final delivery is scheduled for the end of Oct 2019
Breakout: Tuesday 11am-12:30am
Calibration Effort
20
• New Hire: Patrick Ingraham– Calibration Hardware Scientist– Leading calibration hardware
development with Chuck Claver
• Recent Calibration Re-planning• Auxiliary Telescope (Calypso)
Refurbishment expected to start in October 2015
• Modification to the spectrograph design to offer increased cadence, versatility, flexibility
• Developing a Collimated Beam Projector (CBP): Will map transmission as a function of field position, pupil position and wavelength
Breakout: Wednesday 9am-10:30am
Service Building
Coating Plant Installation
M2 Inspection
M2 coating
M2 integration in Cell
M1/M3 inspection
M1/M3 integration
in Cell
M1/M3 coating
Mount Integration
Mount Testing
M1/M3 integration in
MountM3 Tests
M2 integration on Top End
3-Mirror Telescope
Testing
Mount Science Camera
Lower Enclosure
Completion
Dome Installation
FACILITIES
MOUNT
M2 M1/M3
TELESCOPE INTEGRATION
CAMERA
Integrating Structure
Installation
SHWFS Installation
TCS(Pointing,
Mount, Alignment, Operator)
TCS(Active Optics)
OCS(Main
Controller, Sequencer, Operator)
Commission Camera Utilities
Base Facility& Fiber Network
DM Infrastructure at Base Facility
DM Network Mountain to Base
DM End-To-End Test from
Mountain to Base
Support Building
Control Room
DM NETWORK
Camera Testing in
Lab
Camera Lab Facility
Camera Inspection
Calibration telescope
Calibration Screen
commission
CALIBRATION
Facility Alignment System
M1M3 Surrogate Mirror integration
in Mount
Calibration Screen
Installation
M1M3 Cell dismounted from
the Mount
ComCam Commissioning
Final System Commissioning
DOME
COMMISSIONING
Integration sequence in phase with subsystems delivery
Integration and Test Plan (LTS-104) describes the general strategy, includes the integration and test sequence and provides a summary for all major key activities.Three Major Phases:Phase 1 (P1): Heavy ConstructionPhase 2 (P2): Mirrors Coating and IntegrationPhase 3 (P3): Alignment Phase
START
ENDP1
P2P3
Breakout: Tuesday 3:30pm-5pm
22
Conclusion
• It’s been a busy year with among others:– Start of construction– M1M3 acceptance and transportation to storage– Lots of new hires
• Next:– Final contracts being awarded– Calibration Hill getting more active– Integration Plans– Operation Plans
We will use more actively the documentation Control
23
We’re heading south no matter the obstacles…