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

2. I.Efthymiopoulos, A.Fabich, CERN
Introduction
Project webpage:
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

3. 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

4. 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

5. 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

6. 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 m3/hour
EDMS
Including activated LN2 of up to 1 liter/beam cycle
Delayed release by >2 minutes after beam to reduce short-lived isotopes
EDMS and
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

7. 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