1. V. Kain, G.H. Hemelsoet AB/OP1Nov 08, 2007 LHC Injection System V.Kain, G.H. Hemelsoet, AB/OP Input from: E. Carlier, B. Goddard, J. Wenninger What do we need to inject? Interfaces Testing

2. V. Kain, G.H. Hemelsoet AB/OP2Nov 08, 2007 What do we need to inject? (1) Last 200 m of transfer line Injection Septum MSI (5 magnets, MSIB and MSIA, one power converter) Injection kicker MKI (4 magnets, 54 kV) Injection stopper TDI Mask TCDD (Auxiliary collimators TCLIA and TCLIB) Transfer line MSI Q5Q4 D2 MKI IP2 kicks in the vertical plane TDI TCDD TCLIA + TCLIB

3. V. Kain, G.H. Hemelsoet AB/OP3Nov 08, 2007 What do we need to inject? (2) Transfer line MSI Q5Q4 D2 MKI IP2 TDI TCDD TCLIA + TCLIB BI in the LHC –BTVs – application: Fabio For point 2: BTVSS.6L2.B1, BTVSI.C5L2.B1, BTVSI.A5L2.B1, BTVST.A4L2 –BLMs (relevant for injection tuning) – partly SPS timing, partly LHC timing –Injection acquisition for LHC BLMs: application? –5 LHC BLMs on the MSI AND 5 SPS BLMs on the MSI (the last TI2 and TI8 ones) –3 LHC BLMs on the TDI –no BLM on TCDD, but at entrance of D1 –(BLMs for TCLIA/TCLIB) –(no mention of LHC BPMs, nothing special for injection region)

4. V. Kain, G.H. Hemelsoet AB/OP4Nov 08, 2007 Interfaces (1) Interlocking –Supervision application for East and West Extraction in SPS will be updated to include injection BICs –MKI needs injection permit to pulse remotely ALICE ZDC unmaskable LHC beam permit unmaskable –Masking needs LHC Safe Beam Flag (SLP, timing) –Master BIC will be updated using the ‘real’ logic (next year) SMP generator box for: –Beam presence –LHC SB –SPS probe flag –SPS SB Injection BIC still missing

5. V. Kain, G.H. Hemelsoet AB/OP5Nov 08, 2007 Interfaces (2) RF – pre-pulse –optical fiber link to point 4 LBDS – abort gap watch dog –direct fiber link with point 6 –OASIS: injection permit BETS window watch dog window (AGK) PFN voltage circulating intensity like to have this as a fixed display Timing –“Next Injection Ring” event –Injection warning (1000 ms before injection) –SLP energy for BETS SPS example, no AGK

6. V. Kain, G.H. Hemelsoet AB/OP6Nov 08, 2007 Transfer lines Power converters: –Power converters including MSI: SPS MUGEFs hardware commissioned (heat run,…) settings available – SPS timing – SPS cycle interlocking via transfer line BICs (ROCS surveillance) BI: –All applications ready –All equipment already defined for logging (DB and SDDS) fixed displays dedicated applications (BTVs, BLMs, BTCs, YASP) –still missing: critical settings for BLMs TCDIs: –Only three collimators in TI 2 hardware commissioned –Not connected to BICs yet –(Two partly beam commissioned setting up methods still to be worked on) –Application available critical settings do not exist yet

7. V. Kain, G.H. Hemelsoet AB/OP7Nov 08, 2007 MKI Interlock to ring BIC –Local/remote –SIS: temperatures Interlock to injection BIC –State Settings: LSA settings and critical settings –LhcMKIstate standby, on, off –LhcMKIkick delay, length, strength (57 kV), enable/disable windows: critical settings Application in progress (Georges-Henry) BETS like MKE in SPS –uses SLP energy Logging still needs to be discussed Alarms still to be defined for OP

8. V. Kain, G.H. Hemelsoet AB/OP8Nov 08, 2007 TDI/TCDD - collimators Needs LSA settings and critical settings via collimator control User permit to Injection BIC – TDI needs to be in “protect” during injection User permit to Ring BIC, beam specific –TDI needs to be out after injection TCDD in IR2 moveable (in/out) –User permit to Injection BIC → needs to be closed during injection –Alarms → needs to be open otherwise Controls: collimator control TCLIA/TCLIB → collimators, Stefano, interlocking like TDI TDI ringBIC : TDI pos > TDI ringBIC TDI injBIC : TDI pos < TDI injBIC MKI standby: t 0

9. V. Kain, G.H. Hemelsoet AB/OP9Nov 08, 2007 Other stuff Knobs for polarity changes of experimental magnets, separation on/off, crossing on/off: –experimental magnet, correctors, compensators, MKI Orthogonal steering at MSI → YASP Injection steering: –MKI part of it? –define LSA parameter angle for MKI → kV Injection triggered acquisition!!!! Need to be able to correlate beam loss to injection event –Nothing foreseen for the BLMs –Only 1 Hz data publishing –→ BLMs on TDI: LHC BLMs!!! “Injection” logging? –to be defined –‘SDA’ – XPOC like? Fixed displays –to be defined (Injection quality check → SIS) –not an issue for start-up

10. V. Kain, G.H. Hemelsoet AB/OP10Nov 08, 2007 Testing…dry (1) Full testing of injection equipment requires: –Timing –LHC cycling –SLP energy distributed and generated by the LBDS BETS –LHC beam permit – closed loop (LBDS armed → LHC closed!!), closing locally? –Alice ZDC giving green light (for point 2) –LHC Safe Beam Flag distributed TDI, TCLIs, TCDIs masked –Functions defined for TDI (TCLIA/TCLIB as well) –TCDD controlled within collimator control system –Cooling (TDI, TCDD, …) –Logging defined –Sequencer: injection sequence, timing tables prepared –RF pre-pulse (simulation mode?) –LBDS synchronisation commissioned → abort gap watchdog Full testing of injection interlocking requires: –Interlock functions defined for TDI (TCLIA/TCLIB) –Interlock functions defined for TCDIs –TL pulsing – MSI FMCM, MSI PC sum fault –Real Master BIC to verify injection permit result LHC-SPS flag distribution

11. V. Kain, G.H. Hemelsoet AB/OP11Nov 08, 2007 Testing…dry (2) Scenario: interleaved injections: –Sequencer – injection sequencing –“Next Injection Ring” event used by MKIs to condition which one to pulse –ONE injection warning event: injection warning for charging PFNs –Pre-pulse for pulse Scenario: injection – the whole chain: injector chain → first turns in the LHC: –Sequencer – injection sequencing –Mini-conditioning of MKIs?? Uncoupled injection timing, simulated pre-pulse? –Timing table with all events –BI stuff as well: BLMs!!!??? –Injection logging

12. V. Kain, G.H. Hemelsoet AB/OP12Nov 08, 2007 Testing…dry (3) Scenario: inject & dump: –Sequencer… –Together with LBDS –Dump on first turn Scenario: injection finished – prepare for ramp: –Downstream TEDs in –MKI disabled –MKI standby! (before moving TDI) –Move out TDI → state transition: injection permit, no state transition: beam permit –Move out TCLIA/TCLIB → like TDI –Move out TCDD in IR2 …

13. V. Kain, G.H. Hemelsoet AB/OP13Nov 08, 2007 Summary Lots of stuff already there –Equipment partly already hardware commissioned –Applications either just need to be configured for the LHC or are under way Logging and alarms still need some work Triggered acquisition for BLMs during injection? Testing needs to be worked out carefully –Parallelism –Lots of details to be defined