1. Overview Consolidation projects for PS LIU-PS Main observable review Conclusion Acknowledgements S. Gilardoni R. Steerenberg G. Metral H. Damerau BI colleagues CERN BE-BI Stephane Bart Pedersen 1

2. Consolidation Fast BCT Replacement of the old monitor, hardware with better performances DC BCT Better precision for low intensity beam BCT 1000 Turns Better precision for low intensity beam TT2 & TT10 BPM electronics New pickups used by PS-YASP Standard Wire Scanner More reliable Standard Beam Loss Monitor Old monitors and cables to be changed Wall Current Monitor Replace old monitor 2

3. LIU-PS work-units Fast Vacuum Wire Scanners High precision and faster scans Beam Loss Observation (‘Fast Losses’) High acquisition sampling rate Ionisation Profile Monitor Continuous profile measurement Longitudinal Profile Ghosts and satellites detection Replacement of the septum 42 (PSB-PS line) BI instrumentation to adapt Requests following 2011 review. 3

4. Relevant Observables Beam Intensity Ring (DC and Fast) Transfer-lines Beam Size Ring (Punctual and Continuous) Transfer-lines Beam Losses Ring (Monitor and Observation) Transfer-lines (TT2 and Septum 42) Beam Position Ring (Orbit and trajectories) Transfer-lines Tune measurement Specification from OP not yet discussed/published Performances to reach : resolution, accuracy, unit.  work in progress 4

5. Beam Intensity Ring DC Instrument - Status/Issues Ring DC transformer Baseline problem for low intensity beam ADC resolution for high intensity beam Plan Ring DC transformer No solution for baseline problem [CONS-LS1] Old ADC card (12 bits) to be replaced by a 16 bits one, tests in 2012 LHC type based modules and board to replace the ageing PS module New hardware interface to acquire absolute B-train values Total beam intensity evolution over the cycle. One point every ms. 5

6. Beam Intensity Ring Turn by Turn Instrument - Status/Issues Fast 1000 turns transformer Issues with analogue signals (noise and droop) from existing BCT Signal from the WCM used instead for high intensities Plan Fast 1000 turns transformer Old transformer to be replaced [CONS-LS1] Can we dispose of the 1000 turns transformer (PR.ATFA38)? Turn by turn beam intensity. 1000 turns from injection. 6

7. Beam Intensity Ring Satellite and Ghosts Instrument - Status/Issues Wall Current Monitor Old detector RF-BI tests on-going Plan Wall Current Monitor Replacement of the instrument with a better signal quality [CONS-LS1] New Lecroy Oscilloscope to order [LIU-LS1] Attempt to make operational integration during 2012 Satellite and ghost population. Longitudinal distribution (50ps resolution). 7

8. Instrument - Status/Issues Fast BCT (TRIC) Operational except for EA Calibration studies on-going Very old detectors and cables Plan Fast BCT (TRIC) MD with BCT203 (TT2) for bunch-length and position dependency foreseen [2012] Replacement of old monitors [CONS-LS1] No bunch by bunch intensities foreseen Beam Intensity Transfer Lines Total Charges Total charges during each transfer. Transfer Lines Spill In the case of slow extraction and MTE. Intensity spill with 100ns resolution over the extraction. 8

9. Beam Size Ring On demand Instrument - Status/Issues Wire Scanner Operational (up to 15m.s-1). One point per turn. 20 m.s-1 not available Reliability improved (new electronics, new bellows) SEM Grid Operational Size at injection for only one turn Plan Wire Scanner BPM for calibration in WS to be deployed [CONS-LS1] Fast Vacuum Wire Scanner Increasing of the speed to 20 m.s-1 Better resolution, more precise and faster FWS to be installed [LIU-LS2] depending on the proto SPS Beam size in the ring at user-settable time in the cycle. Precise profile measurement within 1ms window. 9

10. Beam Size Ring Evolution Plan BGI Feasibility study to start [LIU-2013] Transverse beam size evolution over the cycle. Ring Bunch by Bunch 2D array of bunch by bunch beam size measurements. Selection of the bunches to observed. Plan Fast Vacuum Wire Scanner Could be integrated into specifications if required [LIU-LS2] 10

11. Beam Size Transfer Lines Single Instrument - Status/Issues SEM grid Operational BTV Operational Mostly used for observation. Only some TT2 BTVs are calibrated and include attenuation. Plan 2 new SEM grids due to SMH42 replacement [LIU-LS2] New electronics for the SEM acquisition [CONS-LS1] Multi turn acquisition study could start [LIU-after LS1] Beam size during injection or ejection. Transfer Lines Multi Turn Beam size spill with 2us resolution. 11

12. Beam Losses Ring Total Losses Per Monitor / Evolution Instrument - Status/Issues Standard BLM Operational Acquisition for time evolution via OASIS (slow) Capture buffer, ambient radiation and interlock not available Plan New BLM (IC) Installation of the detectors, electronics and the cables [CONS-LS2] Assess vertical slices before LS2 Interlock strategy to be defined Integrated losses per monitor during beam presence. Beam loss time evolution during beam presence. Point every ms. Ring Interlock Interlock based on a given PPM threshold. Inhibit and reset by the operator. Ring Capture Buffer Time evolution of the beam losses per monitor. 512 consecutive integration windows of either 2 or 40us. Ring Ambient Radiation Total losses integrated from “beam out” to the next “start cycle”. 12

13. Beam Losses Ring “Fast” Loss Observation Instrument - Status/Issues Beam Loss Observation Detectors installation to be finalized (HV) Plan Beam Loss Observation Choice to make between Cherenkov and Diamond [2012] Detectors of different types installed for assessment and operation Installation of the detectors and the cables [LIU-LS2] Losses digitized at 1GHz sampling rate. 500MHz analog bandwidth. Monitoring using OASIS and the samplers (OP). Beam Losses Transfer Lines “Fast” Loss Observation To be defined. Plan Rende’s specification to be studied [2012] 13

14. Beam Position Ring Orbit Instrument - Status/Issues PS Orbit System Operational Software ported to Linux (ACCOR project) allowing higher performances Plan PS Orbit System None Orbit positions averaged over 300 turns. One point every ms from INJ to EXT (OP event). Ring MRP Average of the orbit positions over all pickups. One point every ms from INJ to EXT (OP event). 14

15. Beam Position Ring Injection Trajectories Instrument - Status/Issues PS Orbit System Operational and used by YASP Plan PS Orbit System None 20 consecutive turn by turn and bunch by bunch positions. 1 to 21, acquired from the INJ trigger. Beam Position Ring Trajectories (Capture) Instrument - Status/Issues PS Orbit System Operational 400000 requested Plan PS Orbit System Increase number of points depending on performances [LS1] 200000/N turn by turn and bunch by bunch position. N=1 to 21 gates, acquired from a given time in ms. 15

16. Beam Position Transfer Lines Trajectories Extraction Instrument - Status/Issues TT2 pickups Operational and used by YASP Radiation issues on PU208 (used by OASIS Plan TT2 pickups Investigation with OP/ABP whether PU208 can be (re)moved during [LS1] Position per monitor per 1 or 2 extraction. Auto-triggered. Transfer Lines Traj. Turn by Turn Positions per monitor at the end of each cycle. 5 consecutive gates auto-triggered. 16

17. Beam Tune Ring Tune Instrument - Status/Issues Tune System Operational Pickup not sensitive enough for low intensity beam Plan Tune System Replace pickup [2012] On demand, 2D array containing N FFTs. 5 Over M turns (M*N < 420000). 17

18. 2012LS12014LS2 SpecificationsExpected performance specifications to be finalized Intensity Ring DC Tests new ADC 16 bits[CONS] Install new ADC Intensity Ring Turn by Turn [CONS] 1000 trafo to be replaced Can we dispose of the 1000T transformer? Intensity Ring Satellite & ghosts Optimize and assess current system performance [CONS] New wall current monitor [LIU] Lecroy Oscilloscope to buy Intensity Transfer Lines Total charges & spill MD with trafo 203[CONS] Replacement of the old monitors Beam Size Ring On demand Deploy and assess installed BPM for WS calibration [CONS] Deployment of BPM for all WS calibration [LIU] FWS installation Beam Size Ring Evolution [LIU] Feasibility study (IPM) BI plan for the PS #1 18

19. 2012LS12014LS2 Beam Size Transfer Lines Single / Multi turns [CONS] New SEM electronics (single turn) [LIU] Start Multi-turns acquisition studies [LIU] New SEMs (SHM42 replacement) Beam Losses Ring Monitoring Interlock strategy to be defined Some cables to pull for vertical slice test Assess vertical slices [CONS] Replacement of the detectors, electronics and [LIU] cables Beam Losses Ring Observation (fast) Detector choice[LIU] Installation of the detectors and cables Beam Position Ring Capture New SW version Beam Position Transfer Lines Trajectories Move pickup 208 Beam Tune Ring Tune System [CONS] Replacement of the pickup BI plan for the PS #2 19

20. 20 Thank you!

21. 21 Spending profile PS