SEQUENCER - week 19

Pre-injection Plateau

  Agent
Pre-cycle power converters  
Set to pre-injection plateau level  
Change mode  
Increment fill number  
Handshake with experiments  
   
Check & monitor power converter settings SSIS
Set TDI settings “parked”, "coarse", "protect" Settings space?
Set collimators “parked”  
Set kicker settings OK
Set Injection kickers ON OK
Start auto harmonic decay correction OK
Check and monitor transfer lines SSIS
Beam dumps "ready"  
Set BPM gains to pilot, set capture bunch and turns What sort of settings are these?
Check Beam interlock system BIS
Change injection master to LHC TIMING
   

 

/Injection Plateau - no beam

  Agent
Pre-cycle power converters  
Set to pre-injection plateau level  
ramp to injection level  
Change mode  
Increment fill number  
Handshake with experiments  
   
Check & monitor power converter settings SSIS
Set TDI settings “parked”, "coarse", "protect" Settings space?
Set collimators “parked”  
Set kicker settings OK
Set Injection kickers ON OK
Start auto harmonic decay correction OK
Check and monitor transfer lines SSIS
Beam dumps "ready"  
Set BPM gains to pilot, set capture bunch and turns What sort of settings are these?
Check Beam interlock system BIS
Change injection master to LHC TIMING
   

Inject pilot

  DR   LSA Other Agent
Drive X Load and/or check injection timing table   CBCM
Drive X Make request to CBCM with ring, bucket number, PS user (intensity) and number of PS batches    
Timing X Injection into LHC - injection kickers, BI receive pre-pulses. BST sends out acquisition event for BPMs, BLMs as required. Acquire [BCT, BPMs, BLMs, SRM]  
On event  

LFB,TFB,RF: Batch dependent settings triggered by timing events.
Jump phase loop onto beam (beam/cavity sum)
Switch synchro loop on

   
After kick X Acquire kick waveform   OASIS

 

Followed by post-injection checks - did acquisition, concentration, publish, timestamping etc. work? Repeat as necessary.

Pilot circulating

  DR    
Manual   Check first turn, energy offset, beam loss, intensity, emittance, RF response, longitudinal emittance  
Automatic X Check BLMs, trajectory in transfer line  
Manual X Measure tune, orbit, chromaticity  
Sequencer   Configure and start global orbit feedback  
Automatic   Monitor lifetime, beam losses  
Automatic   Monitor harmonic correction  
Sequencer   TDI,TCDQ to coarse  
Sequencer X Collimators to coarse  
Sequencer X Change mode  

Ramp

  DR    
    Incorporate trims