1. JRA1 – SRF report CARE Steering Committee meeting, 11-04-2006

2. SRF Work Packages SRF 2 Improved Standard Cavity Fabrication 2.1 Reliability analysis 2.2 Improved component design 2.3 EB welding 3 Seamless Cavity Production 3.1 Seamless cavity production by spinning 3.2 Seamless cavity production by hydroforming 4 Thin Film Cavity Production 4.1 Linear arc cathode 4.2 Planar arc cathode 5 Surface Preparation 5.1 Electro-Polishing on single cells 5.2 Electro-Polishing on multicells 5.3 Automated EP 5.4 Dry ice cleaning 6 Material Analysis 6.1 Squid scanning 6.2 Flux gate magnetometry 6.3 DC field emission studies of Nb samples 7 Couplers 7.1 New proto-types 7.2 Titanium-nitride coating system 7.3 Conditioning studies 8 Tuners 8.1 Actuators and sensor characterisation 8.2 Control electronics 8.3 Piezo-electric tuners 8.4 Magneto-strictive tuner 9 Low Level RF 9.1 Operability and Technical performance 9.2 Cost and reliabilty 9.3 Hardware technolgy 9.4 Software technology 10 Cryostat Integration Tests 11 Beam Diagnostics 11.1 Emittance monitor 11.2 Beam position monitor

3. WP2: Improved Standard Cavity Fabrication SRF Front side of the EB machine Studies of vacuum seals in Milan Reliability analysis (Eacc vs. # of installation difficulties) report close to completion.

4. WP3: Seamless Cavity Production SRF New spinning machine operating in INFN-Legnaro Deliverables (#month): Evaluation of spinning parameters (29) 1-cell spinning parameters defined (36)

5. WP4: Thin Film Cavity Production SRF Linear arc coating at IPJ Swierk DESY to provide single cell cavities for tests in near future.

6. WP5: Surface Preparation SRF Single-cell EP set up operational in Saclay: Multi-cell set-up in DESY Deliverables (#month): continued Automated EP: Conclude on best electrolyte (44) VT cleaning of 9-cell cavities: evaluation of experimental results (48) Dry ice cleaning of horizontal 9-cell cavities: evaluation of experimental results (48)

7. WP6: Material Analysis SRF Aim : Improve the sensitivity of Nb sheet quality control Equipment operational: SQUID scanner operational at DESY Flux Gate Magnetometry operational at INFN-Legnaro DC field emission monitor operational at Uni-Wuppertal. Deliverables Final report on SQUID scanning (48) Conclude on comparison of SQUID scanner vs. flux gate detector (48) DC field emission: evaluation of scanning results (48) DC field emission: evaluate strong emitter investigations (48)

8. WP7: TTF-V and TW60 windows

9. WP8: Tuners CEA Saclay Tuner Ready for Tests - CARE report 06-012-SRF Deliverable # 11 for 2005. Will be tested early 2006.

10. WP9: Low Level RF SRF New firmware for FPGA board called SIMCON 3.0 tested in TTF2/ACC1 to control the Vector Sum of 8 cavities in the module DSP daughter board

11. WP10: Cryostat Integration Tests SRF High RF power tests of fully equipped (coupler, tuner) high gradient RF cavities, in order to qualify new prototypes Deliverable (# month): Cryostat integration tests: final evaluation (46) Achievements so far : Aug’05 : first operation of CryHoLab at 1 MW RF power for coupler RF conditioning Oct’05 : cavity + coupler + CEA tuner installed in CryHoLab CryHoLab re-installation foreseen in 2006, leaving only one year for SRF programme !

12. WP11: Beam Diagnostics SRF The Diffraction Radiator In place in TTF/Bypass Monte-Carlo simulations Awaiting beam time allocation for tests on TTF (FLASH)