1. RECFA Meeting in Paris May 12 2006
HEP Linear Collider
RECFA Meeting in Paris
May
F. Richard
LAL/Orsay

2. Introduction
French activities for a future LC have entered in a crucial phase:
Physics studies and detector R&D for ILC cf. Talk M. Winter
Machine R&D for ILC and CLIC
cf. Talk O. Napoly
Participation to the GDE and WWS for a full evaluation of ILC Machine and Detector end of 2006
Work within European contracts CARE(2004), EUROTEV(2005), EUDET(2006)
Only a brief overview

3. The HEP community and ressources
9 labs, IN2P3+Dapnia, working under a common organisation with regular yearly meetings (~70 participants)
They involve 62(34 FTE) physicists
72 (35 FTE) engineers
14 PhD in total. The goal is to reach 8 PhD/year in Training issue
Financial Support is ~500 k€ per year + ~500 k€ from EUDET (50% Post Docs)
Regular growth, relay of LHC construction

4. Detector R&D Large spectrum: EM calorimetry, µvertexing,
Si tracking, TPC very innovative
specially strong in µ-electronics
French international responsibilities
– Committees (ELCSG, ILCSC, WWS)
– R&D projects CALICE, SiLC, MDI
Connection to Spanish, Japanese (International Lab), Korean, Chinese etc… groups
Strong Involvement in the detector concepts for ILC with leading responsibilities LDC and SiD

5. Physics Some examples:
Higgs challenging channels: ZHH Clermont Saclay, ttH Strasbourg, H+- CPV LLR…
-> Trade off between Pflow and Luminosity
DM measurements LAL, Paris VI with theorist from LPT/Orsay, LAPP/Annecy, Montpelier
-> ILC accuracy needed to match Planck surveyor
Preparation on the DCR document on Physics+Detector for ILC (A. Djouadi CDR Editor)
LC Phenomenology with ~20 theorists spread among 6 labs

6. Machine Detector Interface
Participation of particle physicists (~10) within EUROTEV
~50 man-years ~1.5 M€ over 3 years
Study of IR optimization (crossing angle), backgrounds for detectors Orsay+Saclay
Polarimetry using a laser+Fabry Perrot cavities at Orsay
 Alternate scheme to generate polarized positrons in a Compton scheme
Alignment, Stabilization in Annecy

7. French R&D for ILC R&D on SC technology IPNO, LAL, Saclay
- Supported by two facilities at LAL (power couplers with DESY) and Saclay (cold tests, cavity R&D)
- coordination of SCRF JRA/CARE
- coordination of NW ELAN/CARE
- Synergy with the DESY XFEL
~35 FTE 3.5 M€ (including UE money) for the GDE over 3 years

8. CLIC Long standing collaboration CERN- Orsay
on electron linacs from LIL to CTF (since 1990 guns and cavities)
Injector for CTF3 within CARE JRA Orsay
Activities within EUROTEV: metrology (Annecy) Positron source (Orsay)
Saclay+Orsay+Annecy injector for a probe beam as a major effort

9. New Techniques of Acceleration
Good connection between Accelerator physicists LAL, LLR with Laser Plasma experts LPGP (Orsay), Lully and LOA (Palaiseau)
E.g. Workshop organized under CARE/ELAN on this connection
EUROLEAP EU contract has started in
2006

10. The future Great interest to develop present activities
Use CERN (after DESY) test beams for detectors in 2006 (then FNAL)
Participation to ATF2 for MDI
Renewal of European support within FP7 which is ending soon
Needs support from ECFA + CERN Council SG (ESFRI)
Discussions within ESGARD, EuroGDE, CARE/ELAN with active participation of the French groups

11. CONCLUSIONS
There is a large and well structured community involved in the preparation of ILC on physics and detectors with leading responsibilities
Key interest of this R&D to train young physicists on
instrumentation
Support from EU and Institutes has been adequate for the 1st phase
HEP physicist have taken ambitious commitments in various topics at the Machine/Detector interface
It is essential to renew the European support in FP7

12. Activities in Detector R&D
Category
Phys
(FTE)
PostD
Ing
IN2P3 42
(20) 10
(10) 67
(32.1)
Dapnia/
Saclay 7
(2.2) 3
(2.1) 5
(3)