LBDS Dry Runs

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• LBDS Dry Runs
• Ioan Kozsar Julian Lewis Benjamin Todd Bruno
  Puccio Lars Jensen Ana Guerrero Ollacarizqueta
  Stephane Bart Pedersen Michael Ludwig Bernd
  Dehning Christos Zamantzas Jean-Jacques Gras
  Jan Uythoven Etienne Carlier Nicolas Magnin
  Nicolas Voumard Christophe Chanavat Marine
  Gourber-Pace Ronny Billen Chris Roderick Reyes
  Alemany Fernandez Vito Baggiolini Fabio Follin
  Markus Albert Guy Crockford Marek Misiowiec
  Grzegorz Kruk Jerome Axensalva Eric Gallet
  Brennan Goddard Mike Lamont Verena Kain

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LBDS Dry Runs

• http//wikis/display/LHCOP/LBDSDryRuns
• Scope week 7
• Test point 6 BI in XPOC acquisition mode
• Running LBDS equipment from the control room
• Week 8 Sequence (almost) ready for reliability
  run from CCC
• Scope week 11
• Beam dump system beam 1 programmed dumps
• Local permit loop
• RF simulated revolution frequency
• Programmed dumps via timing system to break
  permit loop
• LBDS triggered by broken permit loop
• Next dry runs week 15, week 19
• Add beam 2 system, interfaces to other systems
  (injection, ), full scenarios (I D, )

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LBDS programmed dump - normally

• Energy Tracking System (BETS) receives energy
  from 4 arcs to define kicker voltage
• Programmed Dump Beam 1
• FESA command to BIS unlink permit loops
  (sequence)
• Timing suppress post mortem beam 1 (sequence)
• Timing Dump beam 1 event is sent out
  (sequence)
• Timing system input to the BIS removes user
  permit
• BIS Broken permit loop triggers beam dump for
  beam 1
• Timing detects broken permit loop ? sends out
  beam 1 dumped event ( required for External
  Post Operational Check XPOC)
• Timing Enable post mortem beam 1 (sequence)

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LBDS Dry Run - week 7

• Scenario
• Beam 1 only
• Beam dump (beam 1) triggered by timing event
  (dump event)
• The beam dumped event is sent out by operations
  (sequencer timing table), not automatically by
  timing
• The BI acquisition is triggered by the beam
  dumped event for the XPOC analysis
• The energy input for the BETS comes through a
  BETS simulator, not through the RB DCCTs in 4
  arcs
• We test
• Control of LBDS equipment from control room
  (except TSU)
• Arming of LBDS through sequencer, LBDS monitoring
  GUI
• Point 6 BI
• XPOC acquisition (BI, LBDS), logging, first
  analysis and report to sequencer

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LBDS Dry Run week 7
Plus all the BLMs in the region, except the
direct ones.
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BI week 7

• BPMSE
• BPMD
• BTVSE
• BTVD
• BTVDD
• BLMs
• Missing direct BLMs, BSRA, BPMSA

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Fixed Displays week 7

Not the final versions will need to rationalise
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Timing Table week 7
Start table event, payload 17 (Hex 11)
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Sequence

• We will use the sequencer to run the LBDS system
  through a cycle
• Will be used for reliability run afterwards
  needs to be operational for several months
• Sequence (simplified)
• Get XPOC result if OK, carry on, otherwise abort
• Go to 450 GeV
• ARM LBDS
• Start energy ramp
• Play timing table with dump event

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Conclusions

• after the first dry run