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CONSOLIDATION CPS-BL SYSTEM

This document outlines the key functionalities and challenges of the CPS-BL monitoring system used for beam loss detection in particle accelerators. It highlights existing issues with outdated electronics and detectors, and proposes new options, including the installation of LHC-integrated testing systems in the PS. The planned upgrades include advanced electronics and detector types, alongside modifications for software compatibility. This planning aims to enhance operational efficiency and reliability in monitoring beam loss, vital for the effectiveness of particle physics experiments.

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CONSOLIDATION CPS-BL SYSTEM

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  1. CONSOLIDATION CPS-BL SYSTEM V. Prieto Hermosilla AB/BI/BL

  2. OUTLINE • The CPS BL Monitoring system • Functionalities • Main Problems • New Options: LHC-IC Test on PS • Planning CPS_BL SYSTEM

  3. PS LAYOUT PS:100(4 SECTORS) TT2:8 nTOF:1 TOTAL BL: 164 AD:2 Injection: 6 Booster:32 (2 SECTORS) Transfer:10 ISOLDE:10 CPS_BL SYSTEM

  4. PS BEAM LOSS • ACEM (Al Cathode Electron Multiplier Tube) • Isat=100mA (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

  5. 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

  6. 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

  7. 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

  8. FIRST RESULTS IC1&IC2 (Direct measurement) CPS_BL SYSTEM

  9. FIRST RESULTS Electronics saturated IC1&IC2 (LHC electronics) CPS_BL SYSTEM

  10. FIRST RESULTS IC vs. ACEM with PS electronics IC vs. ACEM (direct current) CPS_BL SYSTEM

  11. 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

  12. 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 documenthas to be done before the software modification. • The studies for the new electronics start in March. CPS_BL SYSTEM

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