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LBDS Dry Runs

LBDS Dry Runs

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LBDS Dry Runs

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  1. 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

  2. LBDS Dry Runs http://wikis/display/LHCOP/LBDS+Dry+Runs • 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, …)

  3. 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)

  4. 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

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

  6. BI – week 7 • BPMSE • BPMD • BTVSE • BTVD • BTVDD • BLMs • Missing: direct BLMs, BSRA, BPMSA

  7. Fixed Displays – week 7 Not the final versions – will need to rationalise

  8. Timing Table – week 7 Start table event, payload 17 (Hex 11)

  9. 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

  10. Conclusions • …after the first dry run…

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