Project and Technical Overview

Victor Krabbendam LSST Project Manager

LSST All Hands Meeting

August 13 - 17, 2012

2

LSST design is solid and teams are preparing for final design and a construction start

The LSST scope, requirements, and design are well understood

– Prototypes are reducing risk and refining designs

– Major subsystem requirements and ICDs are in place

– Diverse and experienced team working to develop LSST

LSST design maturity supports robust cost, risk, and schedules

– Sufficient for CD-1, PDR, and May Cost Review

Now we need to focus on next steps

– DOE CD-3a for long lead procurement authorization

– NSF Final Design Review

– NSF Construction Authorization in July 2014

3

7 year 3 month schedule developed to align with camera delivery to summit in July 2019

4

LSST Total Federal Construction Budget

PMO: $41M 7%

DM: $121M 19%

Camera: $113M 18%

T&S: $174M 28%

EPO: $12M 2%

Commissioning: $32M

5%

Contingency: $133M

21%

Base Budget $ 492.70 M

NSF Contingency $ 86.2 M

DOE Contingency $ 47.0 M

$ 625.9 M

5

Systems Engineering continues to organize the technical baselines

SRD LPM-17

LSST System Requirements

LSE-29

Obs. System Specifications LSE-30

Subsystem Requirements

LSST System Engineering is a successful collaboration of project and subsystem level support

The Joint Interface and Management Review was a great success in May

Current challenge is continuing the progress and balance individual subsystem efforts

Adding a System Engineer to Project team is high priority

Subsystem Interface Definition

6

Operation Simulator continues to investigate scheduling algorithms and system performance

Developing survey performance metrics has been a successful multi-year effort

NOAO has provided Abi Saha to be Op Sim Scientist

Technical group continues to enhance the code and simulate surveys

More than 18,000 square degrees with more than 825 visits on each patch of sky, Median visit counts by filter: u: 57, g: 80, r: 184, i: 184,

z: 160, y: 160

7

Image Simulator with photon level fidelity supporting science inquiry and DM

A simulated sky Observing an LSST simulation Producing a simulated image

Pointing, Filter, Airmass, Time and Atmosphere from Op Sim

Custom instance of field of view

1010 photons per CCD Separate amplifiers

Many breakouts this week:

– Parameter discussions with Engineering teams

– Status / using the tools

8

Data Management development continues with data challenges every 6 months

Summer 2012 half completed

– SDSS data Strip 82 reprocessed and available this week

– Simulated Image Sim data is next: • ~3000 LSST visits (Wide, Medium, Deep Survey)

• 1.1 million CCDs = 36 TB of images

Image Sim Data production nearly complete

– Computational time: 2.5 hours / CCD

– A recent addition is a Google award of 100 million CPU hours

9

DM architecture developments involve details of data release and alert production

Processing Center

Data Release Production at IN2P3

MOU in place – Technical

details pending

Establishing the details of moving the alert production from the Base to the Archive center

10

LSST Corporation invested non-federal funds for early site leveling in 2011

Initial summit leveling completed – ~4,000 kg of explosives

– 12,500 m3 removed on main site

First production blast: March 8th 2011

11

LSST Corporation invested non-federal funds for early site leveling in 2011

12

Mirror designs are advanced - Private funding enabled early start of both reflective optics

• Primary-Tertiary cast in 2008.

• Fabrication underway at the Steward Observatory Mirror Lab - completion in Fall 2013.

• Secondary substrate fabricated by Corning in 2009.

• Currently in storage waiting for construction.

13

Secondary mirror final design completed and ready for fabrication procurement this month

Mirror Back Surface

Tangent Links: 6 each at 60 deg intervals

Axial Actuators: 72 each distributed in 3 rings

Inner Loop Controllers (1 for each Actuator)

Mounting surface for Hexapod Assembly

14

LSST wavefront prototype pipeline being tested on WYIN One Degree Imager

15 2012

Telescope design is ready for procurement

later this year

16

Design is well advanced and many breakouts to address details of the

Filter

L1 Lens

Utility Trunk—houses support electronics and utilities

Cryostat—contains focal plane & its electronics

Focal plane

L2 Lens

L3 Lens

Camera ¾ Section

1.65 m (5’-5”)

17

LSST has been working with multiple vendors to develop sensor

Fully operable 4K x 4K devices delivered

– In house testing shows requirements are being met

– Flatness: < 5 µm P-V

– Good QE and noise as well

Request for proposals for production prototyping has been released

Device test dewar at Brookhaven

18

Camera risks being addressed – many with prototypes and brassboards

Cryostat w/ CCD & ASPIC II cold

CCD

Front End+ Back End + Raft Control Module

19

Camera risks being addressed – many with prototypes and brassboards

Filter Mechanism clamps

Mixed-refrigerant system (-130°C) prototype

Clamp Status Sensor Unlocking

Cable

Filter Pin

20

Planning for the 2-yr Commissioning is advancing incrementally

Commissioning starts in 2019 but planning is required to support Project Budget and Schedule development

– System Engineering is working with subsystems to define integration sequence and tests

– Tools will be available this week to engage Science collaborations on Science verification tests

Commissioning

21

EPO is planning products and tools to meet the public user where they are

User Interface Design: Sharing UML Domain Model with DM

Formal requirements and documentation

Building Sustainable Partnerships: Outreach Advisory Board, Potential Collaborators.

22

LSST is now “Preparing for Construction”

Highest Priority is Preparing for next Agency Reviews

– CD3a and FDR next year

– Update/upgrade PMCS

Prolonged D&D to “Time is money” construction

– Maintain excellent scientific ties

– Track progress toward plan

Staffing Additions

Business System Updates

– $10M/yr to $100M/yr organization

– “Routine”, “Robust”, and some case “enhance”

Continue Technical Progress and Risk reduction