lhc injection system
DESCRIPTION
LHC Injection System. 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. What do we need to inject? (1). MKI. Transfer line. Q5. Q4. D2. TDI. MSI. TCLIA + TCLIB. IP2. TCDD. - PowerPoint PPT PresentationTRANSCRIPT
1V. Kain, G.H. Hemelsoet AB/OPNov 08, 2007
LHC Injection System
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
2V. Kain, G.H. Hemelsoet AB/OPNov 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
Q5 Q4 D2MKI
IP2
kicks in the vertical plane
TDI
TCDD
TCLIA+
TCLIB
3V. Kain, G.H. Hemelsoet AB/OPNov 08, 2007
What do we need to inject? (2)
Transfer line
MSI
Q5 Q4 D2MKI
IP2TDI
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)
4V. Kain, G.H. Hemelsoet AB/OPNov 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
5V. Kain, G.H. Hemelsoet AB/OPNov 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
6V. Kain, G.H. Hemelsoet AB/OPNov 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
7V. Kain, G.H. Hemelsoet AB/OPNov 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
8V. Kain, G.H. Hemelsoet AB/OPNov 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
TDIringBIC: TDIpos > TDIringBIC
TDIinjBIC: TDIpos < TDIinjBIC
MKI standby: t0
9V. Kain, G.H. Hemelsoet AB/OPNov 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
10V. Kain, G.H. Hemelsoet AB/OPNov 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
11V. Kain, G.H. Hemelsoet AB/OPNov 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
12V. Kain, G.H. Hemelsoet AB/OPNov 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
• …
13V. Kain, G.H. Hemelsoet AB/OPNov 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