1. LISA PathFinder and LISA Alberto Lobo ICE-CSIC & IEEC Appec Spain, IFAE 2-vi-2006

2. Summary • LISA objectives and current status • LISA PathFinder “raison d’être”: the LTP • LPF missionstatus • Spanish involvement in LISA and LPF: • Diagnostic subsystem and DMU • The IEEC team and project basic structure • Mid and long term future prospects Appec Spain, IFAE 2-vi-2006

3. LISA Appec Spain, IFAE 2-vi-2006

4. LISA concept Test masses 5 million km, 30 mHz Transponder scheme Appec Spain, IFAE 2-vi-2006

5. LISA orbit Appec Spain, IFAE 2-vi-2006

6. inclination 0.01 eccentricity o 1 Orbit dynamics Appec Spain, IFAE 2-vi-2006

7. LISA sensitivity Appec Spain, IFAE 2-vi-2006

8. LISA’sassured sources Appec Spain, IFAE 2-vi-2006

9. LISA spacecraft Science module Downlink antennas FEEP Baffle Appec Spain, IFAE 2-vi-2006

11. LISA spacecraft Appec Spain, IFAE 2-vi-2006

12. LISA spacecraft Appec Spain, IFAE 2-vi-2006

13. LISA current status • LISA was formally approved as a cornerstone mission of • ESA’s Horzion 2000+ programme • It was required to be a 50%-50% collaboration with NASA • LISA programme includes LPF • LISA’s launch date is in standby, as LPF results are needed • before is authorised to fly • In addition, NASA is applying budgetary cuts, mostly in view • of its new exploration priorities (Bush, 2004) • Still, an industrial formulation phase is currently underway • at Dornier Satellitensysteme, under ESA contract Conclusion is: LPF is paramount, every effort must be applied to doing it Appec Spain, IFAE 2-vi-2006

14. LPF Appec Spain, IFAE 2-vi-2006

15. LISA’s requirements are extremely demanding. Drag free subsystem can not be fully tested on Earth. A previous, smaller technology mission, will assess feasibility: LISA PathFinder (formerly SMART-2) LPF It will carry on board the LTP. However it will be in a smaller scale, both in size and sensitivity. • Essentially, LTP will check: • drag free technology • picometre interferometry • other important subsystems and software Appec Spain, IFAE 2-vi-2006

16. LTP Objectives: • Drag-free • Interferometry • Other… 30 cm LTP concept 1. One LISA arm is squeezed to 30 centimetres: 2.Relax sensitivity by one order of magnitude, also in band: Appec Spain, IFAE 2-vi-2006

17. LTP current design Appec Spain, IFAE 2-vi-2006

18. LTP and host spacecraft Appec Spain, IFAE 2-vi-2006

19. Lagrange L1 • Launch: Autumn-2009 from Pliesetsk • Launch vehicle: Rockot • Travel time: • Mission lifetime: LPF orbit Appec Spain, IFAE 2-vi-2006

20. LPF operation orbit and injection Appec Spain, IFAE 2-vi-2006

21. LPF operation orbit and injection Appec Spain, IFAE 2-vi-2006

22. Drag-free working concept Appec Spain, IFAE 2-vi-2006 Courtesy of S. Vitale

23. Drag-free working concept Appec Spain, IFAE 2-vi-2006 Courtesy of S. Vitale

24. Drag-free working concept Appec Spain, IFAE 2-vi-2006 Courtesy of S. Vitale

25. Drag-free working concept Appec Spain, IFAE 2-vi-2006 Courtesy of S. Vitale

26. Drag-free working concept Appec Spain, IFAE 2-vi-2006 Courtesy of S. Vitale

27. Drag-free working concept Appec Spain, IFAE 2-vi-2006 Courtesy of S. Vitale

28. Drag-free working concept Appec Spain, IFAE 2-vi-2006 Courtesy of S. Vitale

29. Drag-free working concept Appec Spain, IFAE 2-vi-2006 Courtesy of S. Vitale

30. Drag-free working concept Appec Spain, IFAE 2-vi-2006 Courtesy of S. Vitale

31. Diagnostics and Data Management Unit (DMU) DMU and diagnostics box Diagnostics end items LTP functional architecture Appec Spain, IFAE 2-vi-2006

32. DDS: Data Management& Diagnostics Subsystem • Diagnostics items: • Purpose: • Noise split up • Sensors for: • Temperature • Magnetic fields • Charged particles • Calibration: • Heaters • Induction coils • DMU: • Purpose: • LTP computer • Hardware: • Power Distribution Unit (PDU) • Data Acquisition Unit (DAU) • Data Processing Unit (DPU) • Software: • Boot SW • Application SW: • Diagnostics • Phase-meter • Interfaces Appec Spain, IFAE 2-vi-2006

33. LTP thermal diagnostics Appec Spain, IFAE 2-vi-2006

34. LTP thermal sensors test Appec Spain, IFAE 2-vi-2006

35. LTP Radiation Monitor • It is a particle counter with some • specific capabilities: • It counts particle hits • Retrieves spectral information • (coincident counts) • Can (statistically) tell GCR from • SEP events • Electronics is space qualified Appec Spain, IFAE 2-vi-2006

36. In place for test at PSI, Nov-2005 Appec Spain, IFAE 2-vi-2006

37. In place for test at PSI, Nov-2005 Appec Spain, IFAE 2-vi-2006

38. Thermal: • Juan Ramos, UPC • Pep Sanjuan, IEEC • Miquel Nofrarias, IEEC • Alberto Lobo, CSIC & IEEC • Magnetic: • Lluís Martínez, Atipic • Sergi García, Atipic • Radiation Monitor: • Mokhtar Chemeissani, IFAE • César Boatella, IEEC • Carles Puigendoles, IFAE • Henrique Araujo, ICL • Peter Wass, ICL • Catia Grimani, Univ. Urbino • Software: • Joan Clua, NTE (?) • José Antonio Ortega, IEEC • Xevi Xirgu, IEEC • Aleix Conchillo, IEEC • Héctor García, NTE • Management: • Ivan Lloro, PM, IEEC • Josep Colomé, Doc, IEEC • Albert Tomàs, SE, NTE • Xavi Llamas, SM, NTE • Sònia Ferrer, PA, NTE • PI: • Alberto Lobo, CSIC & IEEC Spanish LPF team Appec Spain, IFAE 2-vi-2006

39. LPF International Consortium Appec Spain, IFAE 2-vi-2006

40. Mission: SSO DLR Payload: • Platform: Astrium UK • Payload: Astrium Friedrichshafen Prime contractor: LPF International Consortium Appec Spain, IFAE 2-vi-2006

41. ~3.6 M€ for 2004-2007 PNE Spanish collaboration structure Industrial contractor Research group Appec Spain, IFAE 2-vi-2006

42. Future prospects Ultimate goal is of course to see GWs and do Physics with them... • For this, we envisage two major steps: • LISA PathFinder • Complete undertaken duties • Team-build, much stress on engineer component • LISA • Look forward to an even stronger involvement in • mission definition and construction, both hardware • and science matters. • First hand access to science yield. Appec Spain, IFAE 2-vi-2006