Status on the PSSPS MERIT n TOF 11

Status on the PS/SPS MERIT (n. TOF 11) interface I. Efthymiopoulos, A. Fabich CERN AB-ATB, Switzerland http: //cern. ch/proj-hiptarget ABIC, February 2006 ABIC, 13 th Feb 2006 I. Efthymiopoulos, A. Fabich, CERN 1

Introduction n Project webpage: http: //cern. ch/MERIT n See also n EDMS “MERIT experiment” n presentation at 32 nd ABIC by I. Efthymiopoulos n Experiment presented to AB safety committee on 25 th Jan. 06 ISIEC available n n Interface MERIT to PS/SPS n Beam line n N 2 exhaust n Power supply, power line ABIC, 13 th Feb 2006 I. Efthymiopoulos, A. Fabich, CERN 2

Ventilation bat 806 n N 2 exhaust n n ABIC, 13 th Feb 2006 MERIT I. Efthymiopoulos, A. Fabich, CERN Beam line Power supply/line to solenoid 3

Beam line n No modifications to TT 2 line n FTN beam line n n Displacement/installation of quadrupoles downstream of shielding Causes possible power cable installation to bat. 263 n n Not urgent, can be down in shutdown 06/07 Cut/stop TT 2/FTN vacuum at shielding n install beam window just downstream of shielding. ABIC, 13 th Feb 2006 I. Efthymiopoulos, A. Fabich, CERN 4

The MERIT cycle The solenoid is operating at 80 K. A power ramping takes place about every 30 minutes. n Repetition rate is limited by the cooling process of the solenoid. n n A few seconds B-field ramping 20++ minutes for cooling procedure B-field Solenoid temperature Proton intensity and repeat ABIC, 13 th Feb 2006 I. Efthymiopoulos, A. Fabich, CERN 5

N 2 exhaust n Principle of operation agreed with SC/RP and SC/GS n Release of 200 liters LN 2/ 30 minutes at ambient temperature n n n Including activated LN 2 of up to 1 liter/beam cycle n n n 1400 m 3 N 2 gas/hour to a total ventilation of 27000 m 3/hour EDMS 700153 Delayed release by >2 minutes after beam to reduce short-lived isotopes EDMS 700178 and 697857 Currently installation of exhaust line in TT 10 and TT 2 n n Layout agreed on with A. Spinks, N. Gilbert, G. Robin, C. Lacroix Completed before TT 2 closure at end of February n Operation of LN 2/N 2 system starts in late autumn 2006 n Impact on TT 10 operation n Portable ODH monitoring required Definition and signalization of areas concerned to be finalized MERIT alarm from TT 10 ventilation and radiation monitors to be installed ABIC, 13 th Feb 2006 I. Efthymiopoulos, A. Fabich, CERN 6

Power supply, power line n Transformer/Converter installed at bat. 193 n n AC cabling (18 k. V to transformer to converter) n n n Building 193 only Will be done in autumn 2006; AD shutdown DC n n n Refurbishment during spring 2006 Currently ongoing Completed before 24 th February (TT 2 closure) Safety coordinator ABIC, 13 th Feb 2006 I. Efthymiopoulos, A. Fabich, CERN 7