Based on Lars’ progress report of LIU SPS BI Status of follow-up 13/10/2015Lars K. Jensen, V. Kain1

Upgrade transverse diagnostics (head- tail) Request: Resolve coherent transverse position within individual LHC bunches Both planes H/V at the same time 1000 turn >10 GHz sampling Proposed solution: Electronics/software Purchase Guzik digitizer => done (spare system from LIU-PS TBD) Provide FESA3 class and expert GUI ((T. Levens BI/QP)  use as OP GUI, currently still issue with connection to scope OP application (action OP-SPS) Later stage: High bandwidth detectors (EO/CTF) (HL-LHC prototype) Cross fingers for official Linux support (PCIe).. 27/08/2015Lars K. Jensen BE/BI/SW2 Like to include connection to an instability trigger. This will need to be better defined.

Upgrade BGI Request: Provide relative beam size measurements during SPS cycle (H/V) Proposed solution Magnets: Some changes made during LS1 (3->2) Need green light from OP-SPS to power Detectors: Upgrade cage/MCP similar to LHC -> completed Electronics u pdated as LHC Cabling issues solved however cameras believed to not withstand radiation levels Software System commissioning started – BI expert specifications pending New electronics for HV control being designed (2016?) Actions: Understand/solve radiation issues (camera) Commission system (BL/SW) Dedicated MD to be planned (magnets powered) Decide next steps also in view of LSS5 (LS2) 27/08/2015Lars K. Jensen BE/BI/SW3 Found new location for 517 IPM: Proposal: between the Roman pots of UA9 after QD519.

Upgrade orbit system (MOPOS) Problem Maintenance of obsolete electronics (consolidation) with long coax cables LIU/OP requests Acquisition modes a go-go (useful EDMS document) Integrate interlocks: fast excursion and LSS4/LSS6 extraction bumps interlocking not very meaningful currently. Large tolerances required of 2.5 mm. Should be 0.5 mm. Solutions Replace old detectors -> Done during LS1 Tunnel electronics with ADC (rad-hardness) - Long coax cables -> fibres New acquisition electronics (VFC) with two chains (single bunch/batches) Project status Fibres: Infrastructure available in BA1,5,6 and shaft of BA4 Cables: All done in LSS1 and LSS6, all mini-crates in the tunnel Electronics: 3 prototypes installed BA6 currently under tests Rad-Hard front-end electronic under development - prototype expected end the year Digital Acquisition board final prototype currently being done - production Actions Determine radiation hardness of tunnel electronics (2017) Assess performance of front-end electronics (2015/2016 – MD to be requested) Produce electronics (tunnel and surface) and firmware/software Investigate and implement interlock modes – if possible without need for external fast timing synchronisation Publish EDMS document with software interfaces for each operational acquisition mode 27/08/2015Lars K. Jensen BE/BI/SW4

Upgrade wire-scanners Request : Scans with 4 PS batches at 450 GeV in the SPS BxB acquisition Improve precision with small / low-intensity beams: currently in absolute +/- 50 um uncertainty on sigma independent of energy Decrease dependency on settings (PM gain etc) Both planes H/V at the same time: should be OK with new location proposal + up to 5 scans per cycle (minimum time between scans: 1s). Emittance accuracy 10% (absolute) Solutions : New mechanical design installed in SPS (LSS5) Diamond as PM replacement (parallel) Fibres to replace long cables Actions : 2015: Provide electronics for movement and acquisition of profiles Provide specifications for BI software Assess performance with beam of scanner and diamond 2016: Beam tests SPS with final electronics/software Final detector and electronics design 2017->2018: Production and test LS2: Installation and commissioning (final locations to be specified) (OP-SPS / ABP) 27/08/2015Lars K. Jensen BE/BI/SW5 Have proposal for all scanner positions now: Keep 2 linear ones: 519, 416 (now at 517, 521) Keep old rot. ones: 519, 416 Add new rot. ones: 519, 416

Upgrade Fast (Ring) BCT Request : Provide BxB intensity = f(cycle-time) Accuracy (p/b) = 5% Problems : Position and bunch length dependence and limited analogue bandwidth (bunch cross-talk) Proposed solutions : Detectors: Install BCTI(CT) or BCTW (being tested on LHC) Installed in LSS3 (long cables) and LSS5 (bunch synchronisation) Electronics/software: Commission Digital Integration (DI) system Adapt existing software for new electronics Actions : Decide on best suited detector and produce suitable detector for SPS Plan for installation (LSS3/LSS5) during EYETS (for 2017 run) LSS5 (new layout after LS2) Being discussed (NA-IONS interlock) 27/08/2015Lars K. Jensen BE/BI/SW6 Proposal to move BCTs in LSS5 on the other side of QD19, symmetric to old location. They will replace the BCT3 eventually. Add: beam tracking connection to beam dump Add: BA5 interlock entry for BCT dynamic economy

BSRT, matching and BLDM BSRT Request: acquire beam size at SPS top energy as Beam Quality Monitor before extraction to LHC (SLI goal) Status: optical line upgraded during LS1 Some performance tests done (G. Trad) – calibration stability to be assessed Issues Only enough light at flat-top (>400 GeV) Radiation levels prevent use of sensitive digital cameras Limited number of images acquired Longer term (2016) Redesign electronics and software with new electronics for profiles and motors Parallel system based on slit and intensified PM being investigated (BI/PM) Operational integration Matching: Request Acquire turn-by-turn beam size for SPS injection matching Issues Bad signal/noise with low intensity beams Longer-term Low priority for LIU – standby BLDM (satellite monitoring) – ‘nice to have’: Possible solution: Use of PM on synchrotron light (high energy) Request: Intensity distribution around the ring ~ nsec resolution (200MHz bunches) ~1E-4 from ultimate LIU bunches (~5E7 charges) 27/08/2015Lars K. Jensen BE/BI/SW7 Looking for location with less dispersion, If impossible need to invest at bunch-by-bunch feasibility

Diamond BLMs Requests: Acquire fast (> 400MHz) losses at SPS extraction (pre-pulses) New requests: Diamond SPS injection Diamond at SPS scraper – LIU or ? Solution (2014/2015): Install commercial LeCroy scopes for diamonds in LSS4/LSS6 Software interface (FESA) implemented Longer-term: Investigate the use of VFC/DI as for Fast BCT for sampling and BxB histograms (2016) Actions: Clarify specifications for operational use (detector location and acquisition data) Prototype installation for SPS (2016) 27/08/2015Lars K. Jensen BE/BI/SW8

Gated tune measurement Request: Bunch by bunch tune measurements or on selected bunches/batches rather than default envelope Solution: Install dedicated LHC-type electronics in BA2 - done Implement software interface for BQSB – pending LHC BPMs LSS5 could be used (request: 2500 turns for 288 bunches) but with less sensitivity (kicks required) Actions: Make necessary changes to BI front-end software (BQSB) OP-SPS operational application modification allowing gate selection: being done. It also needed exposure of certain settings on the FESA class Hope to test before end /08/2015Lars K. Jensen BE/BI/SW9

Upgrade of BLM system Request Turn by turn acquisition of losses in SPS ring Equip TT10 with BLMs + consolidate SPS->LHC (not LIU) ‘Sun-glasses’ on scraper BLM (LSS1) Solution: Base electronics on HL-LHC developments Signal transmission over fibres to surface (as MOPOS) Subset of (critical/interesting) monitors to be equipped? Issues: No man-power to renovate complete system until after LS2 (priority on PSB, PS, LHC) Actions: OP/LIU to provide list of critical/interesting BLM locations BI to investigate whether possible to equip subset during LS2 27/08/2015Lars K. Jensen BE/BI/SW10

Conclusions Beam Size (BGI/BSRT/Matching/BLDM): Complex instruments expert presence (maintenance) New electronics for SPS BSRT (2016) Wire-scanners: New prototype to be tested with beam before end of 2015 Review of locations (2016) Orbit system: Radiation testing tunnel electronics critical Full system available by LS2 Fast BCTs Choice of detector (ICT/BCTW) to be made before end of 2015 (LHC/SPS) Digital integration electronics being tested Diamond BLMs Possible new locations (injection/scraper) Operational specifications and tools Ionisation BLMs No electronics upgrade before after LS2 (HL-LHC) Subset equipped before? General comment (across all LIU projects): EDMS specifications largely missing Use of ‘LIU-JIRA’ for action follow-up 27/08/2015Lars K. Jensen BE/BI/SW11

Proposed list of actions: LIU/OP/ABP: Head-tail: decide on OP application BGI: decide detector/magnet for LSS5/LS2 (2016) BWS: decide locations for SPS scanners (2016) Diamond: decide OP use-case and locations (2015) BLM: decide critical locations as candidates (2016) Tune: implement necessary changes to OP application (2016) BI: BGI: Provide specifications for software (2016) MOPOS: Produce and install electronics/software (2015->LS2) Determine radiation hardness of tunnel electronics (2017) BWS: Provide software specifications for prototype system (2015) BSRT Provide software specifications for new system (2016) Fast BCT Decide most suited detector and produce (2016) Gated tune Implement necessary changes to tune software (2015) BLM: Decide on renovation/upgrade (2016- >2018) 27/08/2015Lars K. Jensen BE/BI/SW12