1. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 1 LISA Status LISA France College de France January 20-21, 2005 A. Gianolio LISA Project Manager

2. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 2  Following a year of discussion, a programmatic agreement for the LISA project has been reached between ESA and NASA in August 2004  WHY WAS SUCH AN AGREEMENT NECESSARY ?  The interface between experiment and spacecraft in LISA is such that the experiment drives the mission design.  System Engineering needs to extend deep into the definition of the mission elements.  The mission reference architecture has to be defined during Mission Formulation in order to finalize the share of responsibility.  Consequently, all major system engineering decisions have to be agreed by both ESA and NASA.  The way this is implemented requires to be formalized within an inter-agency agreement.

3. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 3 Decisions  ESA considers it essential that during the whole mission and in particular during mission formulation:  no decision affecting overall mission performance  no decision affecting technical design, early technological investment, cost and schedule of the other partner can be taken by one partner without explicit and well informed consensus by the other partner.

4. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 4 Organization principles  Single project with parallel organizational structures in each agency.  Each agency is responsible for discharging its obligations.  Each agency’s project team responds to his own management.  A high degree of interaction is required of the two agencies.

5. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 5 Mission phases  Two mission phases can be identified:  FORMULATION Definition of mission and system requirements and of mission architecture  IMPLEMENTATION Procurement of deliverables that fulfil the above requirements  Additionally ESA will introduce the:  DEFINITION Industrial competitive phase to perform the preliminary design of the ESA deliverables and select the prime contractor for Implementation

6. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 6 ESA-NASA Agreement  The main elements of the agreement are:  Project description  Project organisation  System Engineering functions  Mission elements share  The Project description defines the general terms to be adopted throughout the project

7. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 7 Definitions  LISA Scientific Complement: it includes the LISA Optomechanical Core Systems (LOCS), the LISA Instrument Metrology and Avionics System (LIMAS), the associated control software, microthrusters (TBC)  Sciencecraft: one spacecraft bus with its LISA Scientific Complement  Constellation: the three LISA sciencecraft operating together.  Joint Project Managers Office (JPMO): LISA project management office composed of the ESA and the NASA project managers and their management support, chaired jointly by the ESA and the NASA project managers.

8. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 8 Definitions  Mission System Engineering (MSE): system engineering team co-chaired by the ESA, the GSFC and the JPL Mission System Engineering Managers, who have equal authority and report to the JPMO. MSE merges the system engineering teams of ESA, GSFC and JPL.  Mission System Engineering Advisory Team (MSEAT): small advisory body to the Mission System Engineering.  Integrated Technical Advisory Teams (ITAT): technical teams commissioned ad hoc by MSE to provide inputs in specific areas.

9. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 9 MF Project Organisation The JPMO, led by the ESA and the NASA project managers, is in charge of the overall project The ESA and the NASA project managers share equal responsibility in the management of the project The JPMO has to approve, inter alia, the mission reference design and the requirements The project will adopt, as far as possible, a single set of procedures, documentation and reviews = Advisory function MSE team MSEAT Launch V. ESA SE Mgr. M. Sallusti GSFC SE Mgr. C. Mc. Graw ESA PM A. Gianolio NASA PM B. Cramer JPMO ITATs Prop. Mod.Ops. S/C bus LOCS LIMAS JPL SE Mgr. J. Evans Development offices ESA-NASA science team co-chairs K. Danzmann – T. Prince

10. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 10 Programmatic  The description of the System Engineering functions constitutes a fundamental step forward in the cooperation:  it identifies the functions in Formulation and in Implementation  it sanctions the principle that the mission design has to be done jointly, to the level required to clearly define the responsibility of each agency  It establishes that decisions affecting the project cannot be taken unilaterally by one Agency  The implementing structure foresees three SE managers working together to define mission requirements and reference architecture, to be submitted to the approval of the two project managers

11. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 11 ITATs  ITATs are created by the SE Mgrs upon need and they can be dissolved once the task is completed.  Their charter is defined by the SE Mgrs  The ITATs composition is defined by the SE Mgrs and can be modified during the existence of the ITAT.  Each ITAT has have a chair appointed by the SE Mgrs  The ITATs can call upon the support of experts for the fulfilment of their charter.  The ITAT chair can, if necessary, advise the SE Mgrs on the need to create a subgroup to address specific issues.  Currently three ITATs are active: the DRS, the IMS and the Constellation

12. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 12 DRS ITAT  The DRS/GRS ITAT is chartered to provide the SE office the following inputs:  GRS reference architecture and options  DRS reference architecture and options  Overall acceleration noise error budget  DRS requirements flowdown  GRS Risk List  GRS test (validation and verification) plan  DRS test (simulation) plan  Composition: S. Vitale (chair), M. Sallusti, S. Buchman, S. Merkowitz, T. Hyde

13. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 13 IMS ITAT  The IMS ITAT is chartered by the SE office to perform the following tasks:  Initially define the IMS architecture including options  Define interface between the IMS subsystems  Develop an error budget  Identify areas that require technology development  Develop a prioritized IMS risk list  Develop an IMS test plan  Define a constellation frequency plan for the space- space segment  Composition: O.Jennrich (chair), K.Danzmann, P. McNamara, G.Heinzel, D.Shaddock, T.Stebbins, P.Bender, D.Robertson, T.Hyde (obs)

14. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 14 Constellation ITAT  The Constellation ITAT is chartered by the SE office to perform the following tasks:  Define constellation concept (functions, system)  Identify DF interfaces to IMS and GRS  Define control requirements on micropropulsion subsystem  Define constellation acquisition strategy and relative requirements on DRS and IMS subsystems  Composition: M.Sallusti (co-chair), S.Merkowitz (co-chair), T.Hyde, D.Bortoluzzi, J.Zeimer

15. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 15 Programmatic - SW  The agreement for SW includes the following:  Software algorithms and the corresponding code to the level of e.g. MatLab routines will be defined and maintained by MSE throughout the mission lifetime.  Each Agency will independently verify and validate all mission software developed by the other Agency.  Each Agency will exchange models required to support design, verification, validation and operations with the other Agency.  If any of the points above requires specific clearances, NASA will promptly start the required process.

16. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 16 ESA Contribution  Under the current agreement, ESA is responsible to deliver the LISA Opto-mechanical Core System (LOCS)  The LOCS includes the following:  Gravitational Reference System (GRS)  Structures  Optics  Laser Subsystem  Additionally ESA may deliver three Propulsion Modules (PM).

17. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 17 GRS  ESA supplies:  Charge Management System  Vacuum Enclosure  GRS Analog Electronics  JPL supplies:  Test Mass  Caging Mechanism  Electrode Housing  GRS Digital Electronics (TBC)  ESA integrates the GRS

18. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 18 Structures  ESA supplies:  GRS – OB Telescope Alignment Structure  Y- Tube  Instrument Thermal Insulation/Control

19. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 19 Optics  ESA supplies:  Optical Bench (OB)  JPL supplies:  Photodiodes  CCD’s  Star Trackers

20. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 20 Laser Subsystem  ESA supplies:  Laser  Modulator  Laser Stabilisation

21. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 21 ESA Contribution – AIV  ESA integrates, verifies and delivers three LOCS to JPL.  ESA supports NASA during all system level LOCS integration and testing activities.  ESA supports the end to end system verification at GSFC and at the launch site.

22. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 22 ESA Contribution – Ops & SW  ESA supports in-orbit commissioning activities and nominal operations.  ESA performs the Software Independent Verification and Validation for all flight software.

23. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 23 JPL Contribution  JPL will be responsible to deliver the LISA Instrument Metrology and Avionics System (LIMAS).  The LIMAS includes the following:  Frequency Distribution Subsystem  Phase Measurement Subsystem  Metrology System C&DH  Metrology System Flight Software

24. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 24 JPL Contribution - AIV  JPL develops, integrates and verifies three LIMAS assemblies.  JPL integrates the three ESA-delivered LOCS onto the three LIMAS and verifies them.  JPL verifies Operation and Performance of the three LOCS/LIMAS assemblies with the support of ESA.

25. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 25 GSFC Contribution  GSFC will be responsible to deliver the following:  Spacecraft Bus including subsystems  Constellation Software (drag-free and acquisition)  Microthrusters (TBC)

26. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 26 GSFC Contribution - AIV  GSFC integrates and verifies three Spacecraft Buses.  GSFC integrates and verifies the three LISA Scientific Complements (LOCS + LIMAS + Control Software + Microthrusters) onto the three Buses.  GSFC integrates and verifies the three Propulsion Modules.

27. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 27 NASA Contribution  NASA procures the launch vehicle (Delta IV)  NASA performs operations via the DSN

28. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 28 Mission Formulation  ESA has started an industrial contract with Astrium GmbH for the LISA Mission Formulation on January 17, 2005  The activity will last two years and is divided into two phases, lasting respectively 9 and 15 months  Regular Milestones have been set to ensure consistent system design and to phase work with NASA  Each phase is concluded with a review (Mission Architecture and Mission Definition Review respectively)  Additionally, a Mid-term Review will take place in the middle of phase 2

29. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 29 MF tasks  Astrium will support ESA in the consolidation of: - Mission constituents and their interfaces - Model philosophy - Error budget apportionment and allocation to the constituents - Risk assessment and risk management plans - Mission Requirements in order to allow entering the Definition Phase - All the other elements required to support discussions with NASA on the share of responsibility

30. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 30 MF – Phase 1  The objective of this phase is to consolidate the LISA mission architecture and design.  Main end products will be: a complete set of draft Specs for the LISA mission elements, the DDVP, Budgets, Tech Plan  Among others, the following specific points will be addressed in phase 1:  OB re-design and interfaces with IS  telescope and structure  Telescope pointing system  P/L Avionic and I/F with S/C  Error budget  Constellation acquisition  point ahead  Critical review and analysis of the S/C and Propulsion Module design  Mission scenario and Operations

31. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 31 MF – Phase 2  A reference design (mechanical, optical, electrical) for the mission elements will be produced.  Product Tree, IRDs, Functional diagrams, Budgets will be consolidated  Risk assessment and margin policy will be reviewed  Environmental constraints will be reviewed  Key technology identified and technology plan proposed  MRD will be finalized and draft requirements documents for the mission elements will be prepared  The requirements verification logic and methods will be established

32. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 32 MF – Short term  Short term (3 months scale) activities will concentrate on the following major architectural issues that have relevance in the definition of a set a requirements for the design:  Use of Telescope/CCD as a Star Tracker  Acquisition and attitude control  Alignment  Point ahead angle  Telescope design

33. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 33 Mission Formulation  Mission Formulation has a different meaning at ESA and at NASA and care has to be exercised to avoid confusion:

34. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 34

35. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 35 Data Processing  European plan of activities:  Request Letter of Intent from interested parties.  Plan to have algorithm in prototype form at the end of 4 yrs period.  Need to the define the e2e data processing cycle with responsibilities and products at the various stages.

36. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 36 Data processing 1.Create ad-hoc data processing structure with ESA chair 2.Define goals, plan of work, schedule 3.ESA request sci community LoI 4.Selection of scientists for participation to data processing structure 5.SPC info paper 6.Mtg with selected parties to define plan of work and required funding 7.Selected parties to obtain national funding 8.ESA to place a contract to study and define the LISA data processing architecture

37. LISA Programme Jan 20, 2005 – LISA France.A.Gianolio – LISA status - 37 LISA Logo