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Overview

Overview. Consolidation. Consolidation projects for SPS LIU-SPS Conclusions Acknowledgements B. Salvant with ABP colleagues B. Goddard and M. Meddahi T. Bohl with RF colleagues K. Cornelis with OP colleagues BI colleagues. Consolidation #1. SPS BTV rad-hard electronics

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Overview

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  1. Overview Consolidation • Consolidation projects for SPS • LIU-SPS • Conclusions • Acknowledgements • B. Salvant with ABP colleagues • B. Goddard and M. Meddahi • T. Bohl with RF colleagues • K. Cornelis with OP colleagues • BI colleagues LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  2. Consolidation #1 • SPS BTV rad-hard electronics • BA1 (injection), BA2/BA80 (North Area) • New cables foreseen during LS1 • Plans: • Like now but renovated (acquisitions possible) for 2014 • TT2 & TT10 BPM electronics • Operational since 2012 start-up • Request for CT/MTE beams implemented • Radiation-related issues being followed (as for PS-TT2) • SPS Closed-orbit (MOPOS): • Funding covers electronics (LIU details) LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  3. Consolidation #2 • SPS BLM systems • Funding for new electronics (see LIU details) • SPS Wire-scanner systems • Funding for new mechanics (LIU details) • New: North area target instrumentation • Replace target boxes (TBIU/TBID) during LS1 • Funding missing • New SPS IN-OUT electronics -> PLC • MIL1553 eradication during LS1 (BE/CO priority) LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  4. LIU-SPS work-units • Requests following 2011 SPS LIU review: Minutes: https://edms.cern.ch/file/1138788/1/MinutesBIReview-310311.pdf Relevant observables identified: • Intensity (Fast and DC) • Transverse beam size • BLMs (‘Diamond’ and ‘IC’ detectors) • Satellite observation • Gated Tune-meter • Head-tail instability observation • Closed-orbit and trajectory LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  5. Ring (DC) Intensity #1 Quantify total intensity transmission during SPS cycle • Specifications: • Intensity range: 1e8 to 1e14 • Sampling: 200Hz • Accuracy: 1% of measured value (>~1E11 charges) • Resolution: • 1E8 (1sec integration) • 1.5E9 (5msec integration) • Analogue rise-time (10%->90%): 3msec LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  6. Ring (DC) Intensity #2 • Status: • Present BCTs: • ~5E8 to 1.4E14 charges covered by two devices • Expensive maintenance cost (Bergoz) • Plans: • Install new detector(s) (LSS5) during 2012 T.S. (NA61 interlock funding) • Evaluate detector and electronics (2012) • Decide on longer-term strategy during 2013 LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  7. Ring (Fast) intensity #1 Quantify bunch intensity and turn-by-turn transmission • Specifications: • Bunch by bunch (ie 25nsec/40MHz) (200MHz request not covered presently) • Turn by turn for at least 1000 turns • Intensity range: 1e9 -> 5e11charges/bunch • Resolution : 1% loss turn to turn (total intensity) • Accuracy: • Bunch intensity value known within 5% (max. 10% for low intensity beams) LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  8. Ring (Fast) intensity #2 • Status: • Not able to distinguish bunches at 40MHz • Beam position dependency • Bunch length dependency • Plans: • Turn-by-turn acquisition ready (OP application pending) • Investigate position in SPS ring allowing for shorter cables (LSS5 candidate) • Investigate ICT techniques on the LHC (LS1) and then decide for SPS Bandwidth limit (50nsec LHC beam) Bunch length effect (RED curve) (DC blue) LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  9. Ring (Fast) intensity #3 Qualification of beam satellites • Specifications: • Time resolution to be specified • Intensity resolution: 0.1% of ultimate bunch • Status: • Investigations into using synchrotron light • BSRT system not operational since several years • Would likely have to integrate over long time (wiggler).. • Plans: • See with BE/RF reusing WCM as detector (as in PS) • Attempt revamp of SPS BSRT during LS1 LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  10. Wire-scanners #1 Quantify beam size at specific times in the SPS cycle including bunch-by-bunch (@40MHz) • Specifications: • 5% accuracy on beam size (above 1E11 charges) • Bunch by bunch acquisition (25 nsec slot) • Beam size consistency between IN and OUT scans (for same conditions in same cycle) • Scanners at optimal positions (beta-max H/V) • Mainly layout issue • Finding range for linear behaviour difficult (as seen in PS complex) LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  11. Wire-scanners #2 • Status: • Mechanical (potentiometer) issues believed to be main error source • 40MHz acquisition available (MSWG April 2012 K. Cornelis) • Linearity (PM) issues to be followed (guidelines) • Plans for new wire-scanner system: • VIA to work on electronics (start October 2012) • PhD student to work on position determination • Install more precise (Fast Vacuum) BWS prototype in the SPS during LS1 (exact plane/location and time-scales to be discussed) • Launch series production allowing all others to be installed during LS2 LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  12. Beam size evolution #1 Quantify evolution of transverse beam size during the SPS cycle • Specifications: • Detect 5% changes in beam size • Bunch by bunch (if possible) • 10 msec sampling intervals (if possible) • Status: • Two monitors with dipoles installed in the SPS (LSS5) • Issues seen on BGI system when last used (MSWG) • Plans: • New optics/electronics installed • Software design and BI commissioning during 2012 • Images integrated over 20msec • Hope to have systems operational during 2012 LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  13. Ring beam size #3 Qualify betatron and dispersion matching in both planes at injection by measuring turn-by-turn beam size variations of circulating beam • Specifications: • Turn-by-turn for single bunch • Acquisition of 100 turn profiles • Two separate monitors needed • H, V and skew with zero and high dispersion • Status: • BTV screen with read-out installed (LSS5): • Issue with screen breakage to be understood • Plans: • Feasibility study in the LHC during 2012 • Beam tests in the SPS to be discussed • Study to be made for the SPS integration (LS1) LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  14. Ring Beam Size #4 Gated beam size checks before extraction SPS for BQM • Specifications: • Acquisition covering ~1us integration windowsto quantify differences (head and tail of PS batches) • Single acquisition: 100 ms before 1st extraction • H and V planes (low Horizontal dispersion) • Connection to BIS (eventually) • Status: • SPS BSRT system not operational since several years • Plans: • Investigate possible system upgrade during LS1 • Provide single image (20msec) as of 2014 LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  15. Ring Beam Loss #1 Quantify losses during the SPS cycle and interlock (dump/inhibit)for existing IC BLMs • Specifications per monitor: • Sum of loss signals over cycle • Evolution (@1KHz ?) of loss signals over cycle • Capture buffer 2000 samples (20usec) from time T • 3 integration times for interlocking (20usec, 1msec, 20msec) • Status: • Existing systems with software and hardware interlocks • Design electronics (rad-hard ASIC) during 2012 (HL-LHC funding) • Plans: • Expect to use fibres foreseen for new MOPOS • Lab and radiation tests during 2012/LS1 • Existing systems remain operational until at least LS2 LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  16. Ring Beam Loss #2 Qualify Fast losses at SPS extraction (and injection) • Specifications: • 1 GHz sampling for 100’000 points (200MHz enough?) • Flexible acquisition start time (one measurement per cycle) • Status: • Diamond detectors (identical to LHC) installed: • MSE-41871 in SPS LSS4 (SC/RP refused installation on TPSG) • TPSG-61776 in SPS LSS6 • Acquisition systems (scopes) installed for functionality tests • Analogue signals to be better understood (also for LHC) • Plans: • Look for more suited acquisition systems • Continue studies and work towards operational integration • Injection detector installation during LS1 (SC/RP ..) LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  17. TT10 Beam Loss #1 Quantify beam losses in TT10 • Specifications: • List of new monitors being prepared • 2usec resolution to resolve PS turns (CNGS/SFTPRO beams) (LINAC4 electronics) • Funding and expected resolution to be clarified • Plans: • Finalise monitor locations (2012) • Plan installation of cables etc (LS1/LS2) LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  18. Closed-orbit and trajectory #1 Measurement of orbit and turn-by-turn positions for existing (mainly) shoe-box SPS BPMs (~250) • Specifications for all BPMs: • Orbit acquisition @1KHz (up to 60 sec cycles …) - Single gate per SPS turn • First 50 turns for (ALL?) injection(s) – Several gates per turn (MAX?) • Capture: 10k turns starting from selected time (Same gate as orbit?) • Accuracy: 0.5mm (excluding alignment errors) • Resolution orbit mode: 0.1 mm (0.4 mm for single bunches) • Resolution trajectory mode: 0.4 mm (1.0 mm for single bunches) • Position interlocking (extraction and ring) preferablywithoutgating LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  19. Closed-orbit and trajectory #2 • Statusfor existing system (MOPOS): • Allows single gate per SPS turn • Performance issues dominated by long cables • Also used for extraction position interlock LHC/CNGS in LSS4/LSS6 • Replacement systems not yet declared operational by OP • Long-term maintenance/reliability issues • Status for new system: • Radiation testing of electronics (PSI and CNGS) on-going (100krad required) • Investigating two solutions (fibres and coax-cable transmission) • Fibre solution (believed to give optimal performance): • Large fraction must be installed in LS1 with completion in LS2 • LIU funding (2MCHF) required (2012/2013 ++) • Coax solution (mainly for tunnel radiation concerns): • Influence for SPS Ring BLMs (upgrade relies on fibres available) • Limited upgrade possibilities LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  20. Closed-orbit and trajectory #3 • Plans (old and new system): • Replacement of 6 (BPA/BPD) ‘bad’ pick-ups for improved performance during LS1 • Temperature sensors being installed in SPS tunnel for logging (2012) • Electronics production during 2012/LS1 • Tunnel installation during LS1 • Beam testing: • 2012 - few spare channels in LSS4) • After LS1 – at least BA5 (pending EN/EL commitment) • Possibly 50% of SPS covered (in parallel to old system) LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  21. Bunch-gated Tune-meter Measure single bunch betatron tunes to quantify collective effects • Specifications: • Bunch-slot selection (25nsec resolution) • Single minimum - preferably several/all • Accuracy: • 10-4 for 1000 turns (reduced for single bunches?) • Resolution: • 10-5 for 1000 turns (reduced for single bunches?) • Status: • Old tune meter (BOSC) allows selecting LHC batch • OP diagnostics could be improved • LHC BPMs (LSS5) allow bunch-by-bunch position • Reduced accuracy/resolution tune measurements • Limited number of bunches*turns • Plans: • LHC BBQ prototyping to be done in the LHC LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  22. Head-Tail instability observation #1 • Qualitative observation of coherent oscillation modes • Specifications: • Selectable bunch (25nsec slot) • Bandwidth: • Sampling: 20GHz • Analogue: 6 GHz • At least 1000 consecutive turns (H & V) at selected time in cycle • Status: • Present system works (one selected plane) • Bunch length and intensity range issues (pickup and cables) • Plans: • Purchase more performing acquisition system • 2012 (will be difficult to test anything) • Wait until early 2014 ? (~250 KCHF) • Investigate alternative pickup and signal transmission systems LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  23. BI plan for the SPS consolidation LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  24. BI plan for the SPS-LIU #1 LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  25. BI plan for the SPS-LIU #2 LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  26. Spending profile • Open Issues: • Missing ~800kCHF for SPS fibre installation LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

  27. Conclusions • Consolidation/LIU review very useful for the SPS (agreement on solutions/milestones etc) • Agreement to be reached about priorities and specifications • Need funding for renovated TBIU/TBID • Long time-scales for big systems (BLM/BPM) • BI to ensure operation of old systems until LS2 • Spending profile to be updated • Specifically for funding of fibres LIU & Consolidation activities for SPS Lars K. Jensen BE/BI

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