1. ACTAR - EURONS Collaboration meeting Project Coordinator: H. Savajols / P. Roussel-Chomaz Participating Institutions: 1.GANIL (AC) / DAPNIA (AC) / CENBG (AC) 2.DARESBURY (FC) 3.LIVERPOOL (AC) / BIRMINGHAM * 4.SANTIAGO DE COMPOSTELA (AC) / GSI (AC) / INP CRACOW * (* associated participant) I3 EURONS

2. Agenda  Financial revue  Detailed plan for the first 18 months Define R&D efforts Working groups Milestones and expected results  Short presentations Bertram Blank - CENBG TPC Fanny Rejmund - Range measurements Marielle Chartier - UK TPC  Next meeting (CENBG Bordeaux June 6-7) I3 EURONS

3. Budget over 3 years Start date  1 January 2003  Additional contacts between institutions (ex: Recent FRENCH-GERMAN COLLABORATION AGREEMENT I N2 P3 - DSM/CEA and GSI on Active Target : 2 * 21 days in 2005) I3 EURONS

4. ACTAR EC Budget - Overview Manpower : 1 year postdoc : 54 kEuros I3 EURONS

5. EC Budget - Overview 1 Travel : 844 Euros I3 EURONS

6. EC Budget - Overview I3 EURONS

7. Detailed plan for the first 18 months NB: Some of the tasks described below will not be completed before the 18 months deadline

8. Working groups focussing on R & D Task 1 : Definition of key experiments [0-4 months] Physics constraints (Resolutions, dynamic ranges needed, ancillary detectors) define 2 or 3 high priority experiments Participants : all institutes Head coordinator : Bertram Blank (CENBG Bordeaux)  White Paper end of May (Spiral2 and FAIR)  Discussion of the white paper (6-7 june 2005 @ CENBG Bordeaux)

9. Working groups focussing on R & D Task 1 and 2 : Development of event generators modeling key experiments [3-18 months] Detail simulations (GEANT, MAXWELL, …) to optimise the geometrical, electrical and magnetic field configuration (Best resolutions for given dynamic ranges) Participants : all institutes Head coordinators : Dolores Cortina-Gil (USC Spain)  Report June 2006  Preliminary description of detector geometry and response

10. Working groups focussing on R & D Task 3 Group 1 Tests properties of different gases at room temperature and pressure [6-18 months]  Test bench (USC Spain) Beam shielding (GANIL) Studies of interactions of heavy ions with matter [7-18 months] (energy loss, energy straggling, angular straggling, range)  MAYAITO test bench at GANIL SME line [ready for september 2005 7-18months]  TPC test bench at the CENBG Van de Graf (p,d, 3 He, 4 He) [ready for september 2005 7-18months]  test bench at the DAPNIA accelerator [in discussion] Participants : USC, GANIL, CENBG, DAPNIA Head coordinator : Fanny Rejmund (GANIL)  Detailed work program (september 2005)  Intermediate report (July 2006)

11. Working groups focussing on R & D Task 3 Group 2 Studies of cryogenic gases and gases at different pressures  GSI cryogenic chamber test bench Test of different readout chamber designs with existing prototypes (MAYAITO GANIL, CENBG TPC…) [3-18 months] Study of cylindrical geometry design option [12-18 months] Participants : GSI, GANIL, CENBG, Liverpool, Daresbury, Birmingham, DAPNIA Head coordinator : Roy Lemon (CCLRC)  Detailed work program (september 2005)  Intermediate report (July 2006)

12. Working groups focussing on R & D Task 4 Evaluation of existing ASICs [3-12 months]  Report end of 2005 Develop specification of front end and readout electronics [7-18 months]  pre-report july 2006 Participants : GANIL, CENBG, Liverpool, Daresbury, Birmingham, DAPNIA Head coordinator : E. Pollacco (DAPNIA)

13. Detail plan for the first 18 months  Preliminary description of detector and geometry  Selection of different options  Collaboration Workshop (July 2006)  Intermediate report to EURONS / EC 18 months Dead Line

14. What is missing...  Specific ASICs development (long time range, high dymanic …)  Specific front end electronics  Test module including magnetic field  Dedicated ray tracing algorithm development  Less detail studies due to the reduction of manpower financed by EURONS