1V. Kain, AB/OP – 26Feb08

Outcome LBDS Dry Run – week 7

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

2V. Kain, AB/OP – 26Feb08

LBDS Dry Run week 7

http://wikis/display/LHCOP/LBDS+Dry+Runs

• Scope week 7 – preparation for scenario “programmed dump beam 1”:

– Trigger Beam Dump system from the control room via timing event directly

– Test point 6 BI in XPOC acquisition mode

– Test sequencer driving the LBDS: programmed dump

– Sort out first version of XPOC analysis and communication to the sequencer

• Outcome week 7:

http://wikis/display/LHCOP/Checklist+and+Outcome+week+7

3V. Kain, AB/OP – 26Feb08

Timing Table – week 7

Start table event, payload 17 (Hex 11)

Triggered beam dumpIn week 11 it will be the broken permit loop

Normally

4V. Kain, AB/OP – 26Feb08

BI (1)

• Worked fine in XPOC acquisition mode. Did not look into data integrity.

• Video signals from screens need some attention – will be done for next dry run.

• Fixed displays need to be cleaned up a bit – have too many now.

– BTVs

– BLMs (will only concentrate on the BLMs associated with extration equipment)

– BPMSE, BPMD

– BCTFD

5V. Kain, AB/OP – 26Feb08

BI (2)

6V. Kain, AB/OP – 26Feb08

LBDS equipment and software (1)

• Kickers and protection worked fine.

– OR: AS THEY WERE SPECIFIED.

• Acrobatics to “arm” the system:

– In order to arm LBDS:

• Need to arm BETS

– Need to be below injection engery

• Need to arm IPOC

• Need to arm the kickers

• Need to arm overall LBDS (TSU together with BIS, removes injection permit)

• Could get ourselves into situations (BEM interlock), where we could not arm anymore

• BEM interlock: energy freezes – need to be below 450 GeV to arm

• Without “stop”, “start”, “reset”, “rearm” could not have got back

• Sorted out for next dry run

LBDS Control and Monitoring GUI (M. Albert)

Week 7

7V. Kain, AB/OP – 26Feb08

LBDS equipment and software (2)

• Artificial energy reference – BETS simulator:

To not generate interlock, need slow ramps up and down

8V. Kain, AB/OP – 26Feb08

Sequence

• Overall result: we could drive the whole system through the sequencer without any problem!!!

• A couple of improvements required:

– Cannot set time without SQL script on LSA DB

– If-else statements are required to describe complicated state machines of LBDS system:

• They must be automatically executed and “old” sequence automatically resumed

– Looping

– RBAC for certain sub-sequences/tasks: e.g. if “reset” of BETS required

• Improvements will be there for the next dry run

– Except RBAC

9V. Kain, AB/OP – 26Feb08

XPOC

• Had the first version of the overall system. Looks already promising…

• Was triggered with timing event “beam 1 dumped” to start data collection and analysis as in final version

• Data collection needs to be improved (exception handling,…)

– Now everything written to SDDS

– Might partly go to logging DB

• Improvements required for next dry run:

– Analysis not yet integrated with XPOC server

– Results and state not yet published via JMS for logging and SIS; written to DB only for the time being

– GUI is required

– More XPOC specific comments see WIKI: http://wikis/display/LHCOP/XPOC+status

10V. Kain, AB/OP – 26Feb08

Next Dry Run

• 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

• Still to sort out:

– Arming, XPOC, BETS Simulator, Sequencer follow-up

– Permit loop – fibers, copper cables to LBDS

– BIC/BIS FESA classes to arm, link/unlink permit loops

– BIS supervision

– Timing CIBU, test of detection of broken permit loop

– Remove input of direct BLMs to TSU

– LASS to be strapped

– TSU tested

– N2 pressure and line vacuum display

• Lower priority

– Sequence modified to take all that into account

11V. Kain, AB/OP – 26Feb08

Conclusions

OVERALL SUCCESSFUL FIRST DRY RUN…