Status on the PS/SPS  MERIT (nTOF11) interface I. Efthymiopoulos, A.Fabich CERN AB-ATB, Switzerland http://cern.ch/proj-hiptarget ABIC, February 2006 ABIC, 13th Feb 2006 I.Efthymiopoulos, A.Fabich, CERN

I.Efthymiopoulos, A.Fabich, CERN Introduction Project webpage: http://cern.ch/MERIT See also EDMS “MERIT experiment” presentation at 32nd ABIC by I.Efthymiopoulos Experiment presented to AB safety committee on 25th Jan. 06 ISIEC available Interface MERIT to PS/SPS Beam line N2 exhaust Power supply, power line ABIC, 13th Feb 2006 I.Efthymiopoulos, A.Fabich, CERN

I.Efthymiopoulos, A.Fabich, CERN Ventilation bat 806 N2 exhaust Beam line Power supply/line to solenoid ABIC, 13th Feb 2006 I.Efthymiopoulos, A.Fabich, CERN MERIT

I.Efthymiopoulos, A.Fabich, CERN Beam line No modifications to TT2 line FTN beam line Displacement/installation of quadrupoles downstream of shielding Causes possible power cable installation to bat. 263 Not urgent, can be down in shutdown 06/07 Cut/stop TT2/FTN vacuum at shielding install beam window just downstream of shielding. ABIC, 13th Feb 2006 I.Efthymiopoulos, A.Fabich, CERN

I.Efthymiopoulos, A.Fabich, CERN The MERIT cycle The solenoid is operating at 80 K. A power ramping takes place about every 30 minutes. Repetition rate is limited by the cooling process of the solenoid. A few seconds B-field ramping 20++ minutes for cooling procedure Solenoid temperature Proton intensity B-field and repeat ABIC, 13th Feb 2006 I.Efthymiopoulos, A.Fabich, CERN

I.Efthymiopoulos, A.Fabich, CERN N2 exhaust Principle of operation agreed with SC/RP and SC/GS Release of 200 liters LN2/ 30 minutes at ambient temperature 1400 m3 N2 gas/hour to a total ventilation of 27000 m3/hour EDMS 700153 Including activated LN2 of up to 1 liter/beam cycle Delayed release by >2 minutes after beam to reduce short-lived isotopes EDMS 700178 and 697857 Currently installation of exhaust line in TT10 and TT2 Layout agreed on with A. Spinks, N. Gilbert, G. Robin, C. Lacroix Completed before TT2 closure at end of February Operation of LN2/N2 system starts in late autumn 2006 Impact on TT10 operation Portable ODH monitoring required Definition and signalization of areas concerned to be finalized MERIT alarm from TT10 ventilation and radiation monitors to be installed ABIC, 13th Feb 2006 I.Efthymiopoulos, A.Fabich, CERN

Power supply, power line Transformer/Converter installed at bat. 193 Refurbishment during spring 2006 AC cabling (18kV to transformer to converter) Building 193 only Will be done in autumn 2006; AD shutdown DC Currently ongoing Completed before 24th February (TT2 closure) Safety coordinator ABIC, 13th Feb 2006 I.Efthymiopoulos, A.Fabich, CERN