consolidation cps-bl system
DESCRIPTION
CONSOLIDATION CPS-BL SYSTEM. V. Prieto Hermosilla AB/BI/BL. OUTLINE. The CPS BL Monitoring system Functionalities Main Problems New Options: LHC-IC Test on PS Planning. PS LAYOUT. PS:100(4 SECTORS) TT2:8 nTOF:1. TOTAL BL: 164. AD:2. Injection: 6 Booster:32 (2 SECTORS) Transfer:10 - PowerPoint PPT PresentationTRANSCRIPT
CONSOLIDATION CPS-BL SYSTEM
V. Prieto Hermosilla AB/BI/BL
CPS_BL SYSTEM
OUTLINE
I. The CPS BL Monitoring systemII. FunctionalitiesIII. Main ProblemsIV. New Options: LHC-IC Test on PSV. Planning
CPS_BL SYSTEM
PS LAYOUT
Injection: 6
Booster:32 (2 SECTORS)
Transfer:10
ISOLDE:10
PS:100(4 SECTORS)
TT2:8
nTOF:1
AD:2
TOTAL BL: 164
CPS_BL SYSTEM
PS BEAM LOSS• ACEM (Al Cathode Electron
Multiplier Tube)• Isat=100A (Average anode
current)(6.107particles in the ACEM/10ms)
• Integration mode (fixed Gain)+ADC
• Integration mode +Analog acquisition. (OASIS)
• -800V<Vp<-1100V • Video (display 8 bits) +
Survey (read out 12 bits using 8MSB, every 100ms)
CPS_BL SYSTEM
MAIN PROBLEMS
• Old system: 1980.• Performance limited by the electronics.• No spares for electronics/detectors.• Obsolete CAMAC Racks.• Every detector has to be dismantled and
calibrated every year.• Non standard system: different from SPS and
LHC.
CPS_BL SYSTEM
SPS (LHC) BEAM LOSS
• Ionization Chamber• N2 filled• Vp=800V (1500V)• SPS integration mode (Variable Gain)
+ADC(15 bits)• LHC no gain change• Survey
CPS_BL SYSTEM
LHC-IC TEST ON PS• Two chambers installed on the S16 of the PS (August 2007)
• One in parallel with the beam pipe.
• One perpendicular to the beam pipe, on the magnet.
• Data taken to compare it with the actual BL system (with the same electronics or directly).
• New position needs to be decided
CPS_BL SYSTEM
FIRST RESULTS
IC1&IC2 (Direct measurement)
IC1 vs. IC2
-1
0
1
2
3
4
5
6
7
8
9
-0.000005 0 0.000005 0.00001 0.000015 0.00002 0.000025
time (s)
Volts
(V)
IC1IC2
CPS_BL SYSTEM
FIRST RESULTS
IC1&IC2 (LHC electronics)
Electronics saturated
CPS_BL SYSTEM
FIRST RESULTS
IC vs. ACEM with PS electronics
IC vs. ACEM
-10
-8
-6
-4
-2
0
2
4
6
-0.6 -0.4 -0.2 0 0.2 0.4 0.6
Time (s)
Int.
Out
(V)
IC1IC2ACEM S16ACEM S31
IC2 vs. ACEM
-0.005
0
0.005
0.01
0.015
0.02
0.025
0.03
0.035
0.04
0.045
-0.000005 0 0.000005 0.00001 0.000015 0.00002 0.000025
Time (s)
I(A)
IC2ACEM
ACEM saturated.Imax=0.1mA
IC vs. ACEM (direct current)
CPS_BL SYSTEM
NEW SYSTEM
• Signal Cables: re-used with adaptors.• HV Cables : re-used (Main distribution
changed on 2006)• Electronics: new (studies starts in March)• Detector: new (LHC type)• Mechanics: new (LHC type)
CPS_BL SYSTEM
PLANNING• We are going to install and test:
– 8-16 IC’s in the PS.– LHC Electronics and Software in the b.368.
• The threshold comparator program and the combiner program needs a modification but the Technical specification document has to be done before the software modification.
• The studies for the new electronics start in March.