Lhc beam instrumentation readiness
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LHC Beam Instrumentation Readiness. Overall State (Organization - Production – Installation – HWC – SW) Details per Observables (Position – Losses – Intensity – Transverse Profiles – Q & Q’ – Luminosity) Conclusions. The new Baseline. Overall State: Organisation: Phase I List.

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LHC Beam Instrumentation Readiness

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Lhc beam instrumentation readiness

LHC Beam Instrumentation Readiness

Overall State (Organization - Production – Installation – HWC – SW)

Details per Observables (Position – Losses – Intensity – Transverse Profiles – Q & Q’ – Luminosity)

Conclusions


The new baseline

The new Baseline

BI Readiness [JJ Gras]


Overall state organisation phase i list

Overall State: Organisation: Phase I List

  • The Phase I LHC Beam Instrumentation consists of

    • Beam Position: ~1000 BPM (~15 types)

    • Beam Losses: 4000 BLM (IC and SEM)

    • Beam Intensity: 4 BCTDC, 4 BCTFR (fast ring), 4 BCTFD (fast dump), 2 BSRA (abort gap), 1000 BPM

    • Beam Transverse Profile: 2 BSRT (sync rad telesc.), 2 BWS (wire scanners), 4 BGI (Ionisation gas monitors)

    • Tune and Chromaticity: 14 BPL, 4 BQK (tune kickers),4 BQS (Schottky)

    • Luminosity: 8 BRA (2 types)

BI Readiness [JJ Gras]


Overall state organisation bi responsible

Overall State: Organisation: BI Responsible

BI Readiness [JJ Gras]


Overall state organisation commissioners

Overall State: Organisation: Commissioners

BI Readiness [JJ Gras]


Lhc beam instrumentation readiness

...

BI Readiness [JJ Gras]


Overall state monitor production installation

Overall State: Monitor Production/Installation

  • Sofar, we managed to produce and install our monitors on time with respect to the general machine schedule. Look this for today details.

  • It should also be the case for the remaining.

  • But the 2 BGIs (H&V on Beam 2) installed in LSSR4 have been burned during bake out. We may be able to rebuild one detector for the start-up. Please select the plane!

BI Readiness [JJ Gras]


Overall state monitor installation and inb

Overall State: Monitor Installation and INB

  • During installation, we identify via labels with code bars

    • The functional slots

    • The piece of equipments

  • We update the layout database through the HWC travelers

  • We will thus be Ok for INB issues

BI Readiness [JJ Gras]


Overall state hw commissioning

Overall State: HW Commissioning

  • All our instrument HWC procedure have been recorded and linked to the corresponding travelers accessible from:

    • The LHC layout entry page

    • The LHC HWC links

BI Readiness [JJ Gras]


Overall state hw commissioning1

Overall State: HW Commissioning

BI Readiness [JJ Gras]


Overall state hw commissioning2

Overall State: HW Commissioning

BI Readiness [JJ Gras]


Overall state hw commissioning3

Overall State: HW Commissioning

BI Readiness [JJ Gras]


Overall state hw commissioning4

Overall State: HW Commissioning

BI Readiness [JJ Gras]


Lhc beam instrumentation readiness

...

BI Readiness [JJ Gras]


Overall state sw specifications

Overall State: SW specifications

  • Based on the LHC BI functional specifications, we are currently discussing/agreeing on the corresponding operational software interfaces of our front end server

  • We agree with

    • the instrument commissioners

    • the operational application developers

    • The LHCCWG scenario builders

BI Readiness [JJ Gras]


Overall state sw specifications1

Overall State: SW specifications

  • The following operational interfaces have been agreed

    • Beam Position

    • Beam Loss

    • Beam Profiles (BWS, BSRT slow and fast, BGI)

  • Work is in progress on Intensity and Q/Q’

  • The discussed interfaces are documented in AB/BI/SW web pages

BI Readiness [JJ Gras]


Overall state sw specifications2

Overall State: SW specifications

BI Readiness [JJ Gras]


Overall state sw specifications3

Overall State: SW specifications

BI Readiness [JJ Gras]


Overall state sw prototyping

Overall State: SW Prototyping

  • Based on these specifications, AB/BI/SW will

    • deploy servers on BI LHC FECs emulating these interfaces (requested for November by Mike)

      • We already have some BPM and BLM FEC running.

      • We’ll have BWS and BSRT beginning of July.

      • The rest will follow during the Summer.

    • Transmit corresponding timing and logging requirements to AB/CO

BI Readiness [JJ Gras]


Lhc beam instrumentation readiness

...

BI Readiness [JJ Gras]


Overall state commissioning with beam

Overall State: Commissioning with Beam

  • Except for BLM followed by the MPWG, the procedures for the beam instrument commissioning with beam will be defined by BI for the different instruments.

  • This work will start this Summer and could be presented this Autumn.

BI Readiness [JJ Gras]


Details per instrument

Details Per Instrument

...

BI Readiness [JJ Gras]


Details per observable position status

Details per Observable: PositionStatus

  • Monitors, electronics and front end software will be ready for the start-up

  • We’ll basically have 5 types of acquisitions:

    • Threading: For the first injections before RF capture commissioning – Asynchronous – Ok for a few turns.

      And once beam is captured and our fine delays tuned

    • Orbit: latest orbit acquisition published at 1 Hz (note: orbit is acquired faster for RT)

    • Capture: On request, acquires the beam position for selected bunches over a selected number of consecutive turns (see details on BI Web)

    • XPOC: the position for the last turns prior to every beam-dump event will be available for XPOC

    • Post Mortem Buffers will be sent on PM events via the CO PM channel.

BI Readiness [JJ Gras]


Details per observable position remaining issues

Details per Observable: PositionRemaining Issues

  • Front End SW

    • Calibration settings handling (first day and following maintenance – tbd with AB/CO/DM)

    • Trigger sensitivity swapping: necessary but slow process (hundreds of ms) between pilot and nominal intensity (LSA is informed).

    • Impact of capture data request on RT data transmission (currently investigated with CO)

    • Development of the XPOC position interlock system in point 6 (to be defined with Brennan)

BI Readiness [JJ Gras]


Details per observable position remaining issues1

Details per Observable: PositionRemaining Issues

  • HW

    • HW commissioning (ongoing)

    • Fine delays tuning (as soon as beam is captured).

  • Operational Applications:

    • Full scale test (64 crates) for concentrators (LSA and RT), logging…

    • RT Feed-back: BI-OP proposal start with a loop at 1Hz then try to increase speed to nominal 10 Hz (or ultimate 25Hz) – work in progress.

    • RT loop control

    • Fixed displays definition and ad-hoc developments (if necessary)

BI Readiness [JJ Gras]


Lhc beam instrumentation readiness

...

BI Readiness [JJ Gras]


Details per observable losses status

Details per Observable: LossesStatus

  • Monitors, electronics and front end software will be ready for the start-up

  • We’ll basically have 4 (+1) acquisition modes:

    • Max Losses: The highest loss observed at the monitor since the last request (at 1Hz) over 12 different time periods (40uS, 80 uS, 320 uS, 640 uS, 2.54 mS, 10.24 mS, 81.92 mS, 655.36 mS, 1.31 S, 5.24 S, 20.97 S, 83.88 S)

    • Study Data: triggered as and when required, the granularity of this data will be per channel 1 data point every 40 microseconds covering the last 1.3 secs.

    • XPOC Data: Triggered every beam dump, will return for each channel 1 data point every 40 microseconds covering the last 100ms before the dump and the following 40ms.

    • Post Mortem Buffers will be sent on PM events via the CO PM channel.

    • Collimation Data: feed loss data into the collimation control system to ensure that losses don’t exceed set limits during motion. This data will be sent through a dedicated UDP layer and be triggered by the collimation system.

BI Readiness [JJ Gras]


Details per observable losses remaining issues

Details per Observable: LossesRemaining Issues

  • Front End SW

    • Threshold handling (DB, Tools, procedures… under discussion)

    • Impact of MD data request on RT data transmission (logging – under investigation with CO)

  • HW

    • Threshold evaluation (work in progress in BI)

    • Commissioning with Beam (procedures, options… work in progress in MPWG)

  • Operational Applications:

    • Full scale tests

    • Fixed displays definition and ad-hoc developments (if necessary)

BI Readiness [JJ Gras]


Lhc beam instrumentation readiness

...

BI Readiness [JJ Gras]


Details per observable trans prof bws status

Details per Observable: Trans. Prof.BWS: Status

  • Monitors, electronics and front end software will be ready for the start-up

  • It will be possible to scan the to beams at the same time but not the two planes on the same beam

  • 2 wires per plane per beam will be installed, 1 operational + 1 hot spare.

BI Readiness [JJ Gras]


Details per observable trans prof bws remaining issues

Details per Observable: Trans. Prof.BWS: Remaining Issues

  • Intensity Limitation

    • Quench Limit on Beam Intensity (see details). Current estimation is up to 1-6 10^12 protons in the circulating beam, ie. about 0.3-2% of the nominal intensity at 7 TeV

    • Wire Damage Limit on Intensity difficult to predict (new study in progress) but seems close to the Quench limit.

  • BWS are calibration devices

  • They should be used asap to cross-calibrate the BSRT and BGI.

BI Readiness [JJ Gras]


Details per observable trans prof ionisation gaz mon status

Details per Observable: Trans. Prof.Ionisation Gaz Mon.: Status

  • Beam 1 monitors, electronics and front end software will be ready for the start-up

  • Possibly one plan on Beam 2 (make your choice)

  • We’ll basically have 1 continuous acquisition mode: Acquisition of one image per plane obtained from the integration over 20ms of the rest gas ionization signal. The measurement provides beam profile, size and position at 1Hz. The signal quality will depend on the external systems, i.e. gas injection and B-field.

BI Readiness [JJ Gras]


Details per observable trans prof ionisation gaz mon remaining issues

Details per Observable: Trans. Prof.Ionisation Gaz Mon.: Remaining Issues

  • Front End SW

    • Gas Injection Control (tbd with AT/VAC in September)

    • B-field control and correction (under study – encouraging feed-back from Jorg)

  • Operational Applications:

    • Integration and commissioning of Gas injection and B-Field control

    • Operational application to be started

BI Readiness [JJ Gras]


Details per observable trans prof synchroton light status

Details per Observable: Trans. Prof.Synchroton Light: Status

  • Monitors, electronics and front end software will be ready for the start-up

  • We’ll basically have 3 acquisition modes

    • Non Gated: Full beam image (profile and sigmas) integrated over 20 ms published at 1Hz

    • Gated:

      • Physics mode: All bunches integrated over 1 turn published as fast as possible (every minutes for the 3564 buckets)

      • MD mode: gated part of the beam (down to one single bunch) over several (up to 3000) consecutive turns

BI Readiness [JJ Gras]


Details per observable trans prof synchroton light remaining issues

Details per Observable: Trans. Prof.Synchroton Light: Remaining Issues

  • Front End SW

    • Ethernet link towards the fast camera (in progress)

    • Automatic gain setting implementation commissioning

  • HW

    • Commissioning with beam of the light sources (Onduleur and D3)

    • Calibration Beam with different energy and intensity conditions (as soon as possible!)

    • Reliability of the fast camera in tunnel conditions

BI Readiness [JJ Gras]


Lhc beam instrumentation readiness

...

BI Readiness [JJ Gras]


Details per observable intensity bctdc status

Details per Observable: IntensityBCTDC: Status

  • Monitors, electronics and front end software will be ready for the start-up

  • We’ll have 2 DC monitors per beam. One operational, the second as spare (not ‘hot’) in case of problems and specialist monitoring.

  • We’ll basically have 3 (+1) acquisitions:

    • Injection: beam current for each beam, before and after an injection. Acquired and published every injection.

    • Standart: beam current for each beam acquired and published continuously at 1 Hz.

    • Safe Beam Flag: measured intensity will be transmitted at 10Hz through a dedicated HW link to the MP system.

    • Post Mortem Buffers will be sent on PM events via the CO PM channel.

BI Readiness [JJ Gras]


Details per observable intensity bctdc remaining issues

Details per Observable: Intensity.BCTDC: Remaining Issues

  • HW

    • Commissioning of the Intensity transmission HW link

    • Cross-Calibration (Injection lines, fast ring BCT)

    • No automatic arbitration between the 2 redundant monitors for the start-up

  • Operational Applications:

    • Operational application to be started

BI Readiness [JJ Gras]


Details per observable intensity bctf status

Details per Observable: IntensityBCTF: Status

  • Monitors, electronics and front end software will be ready for the start-up

  • We’ll have 2 fast monitors per beam in the ring and 2 in the dump lines. One operational, the second as spare (not ‘hot’) in case of problems and specialist monitoring.

  • We’ll basically have 2 (+1) acquisitions:

    • Capture: provides intensities of selected individual bunches (S) over N consecutive turns. (S * N < 512K) The data-taking is started at reception of a dedicated central timing.

    • Standart: All individual bunch currents are averaged over 227 turns (20ms). This measurement is continuously repeated at 10Hz and published at 1Hz. Bunch and Beam lifetime will also be computed and transmitted.

    • Post Mortem Buffers will be sent on PM events via the CO PM channel.

BI Readiness [JJ Gras]


Details per observable intensity bctf remaining issues

Details per Observable: Intensity.BCTF: Remaining Issues

  • HW

    • Calibration with Beam

    • No automatic arbitration between the 2 redundant monitors for the start-up

    • Development and Commissioning of the dI/dt monitoring: to be done – BI agreed on the objective to have a prototype ready for Summer 2008.

  • Operational Applications:

    • Operational application to be started

    • Fixed displays definition and ad-hoc developments (if necessary)

BI Readiness [JJ Gras]


Details per observable intensity bsra abort gap status

Details per Observable: IntensityBSRA abort gap: Status

  • Monitors, electronics and front end software will be ready for the start-up

  • We’ll basically have 1 acquisition:

    • Standart: The intensity values will be acquired at 10 Hz. ~ 30 intensity values will cover the abort gap period. The DAB card will cumulate these intensities over a pre-defined number of turns (ex: 1000). The acquisition result will thus be an array of 30 average intensities, which sum will represent the intensity in the gap

    • Post Mortem Buffers will be sent on PM events via the CO PM channel.

BI Readiness [JJ Gras]


Details per observable intensity bsra abort gap remaining issues

Details per Observable: Intensity.BSRA abort gap : Remaining Issues

  • HW

    • Calibration with Beam

    • This is just a monitoring. No action will be triggered from the Front End computer itself.

  • Operational Application:

    • Operational application to be started

BI Readiness [JJ Gras]


Details per observable intensity via bpm status

Details per Observable: Intensityvia BPM: Status

  • Monitors, electronics and front end software will be ready for the start-up

  • We’ll use the acquisition channel of beam 2 to read intensity of beam 1 (and vice versa), i.e. we lose beam position on the other beam

BI Readiness [JJ Gras]


Details per observable intensity via bpm remaining issues

Details per Observable: Intensity.Via BPM : Remaining Issues

  • HW

    • Commissioning with beam if and when necessary (i.e. unexplained obstruction somewhere in the machine).

  • Operational applications

    • This will remain an expert intervention. No operational application is foreseen for this.

BI Readiness [JJ Gras]


Lhc beam instrumentation readiness

...

BI Readiness [JJ Gras]


Details per observable q q via bbq status

Details per Observable: Q & Q’via BBQ: Status

  • Monitors, electronics and front end software will be ready for the start-up

  • We’ll basically start with single kick method and 1 acquisition

    • we will return the raw data, the FFT and basic peak detection for each measurement

    • these acquisitions will be triggered by a central timing event also triggering the selected kicker (tune kicker or damper).

  • PLL continuous measurement and RT monitoring will come later (will require a few MDs)

BI Readiness [JJ Gras]


Details per observable q q via bbq remaining issues

Details per Observable: Q & Q’.Via BBQ : Remaining Issues

  • HW

    • Kicker selection (Tune Kicker or Damper) and triggering?. (under discussion in ABCIS)

    • PLL commissioning (HW and FE SW will be ready but will need MD time)

    • Feed back loop and commissioning (will be based on BPM orbit feed-back infrastructure)

  • Operational Application:

    • Operational application to be started

BI Readiness [JJ Gras]


Details per observable q q via head tail status

Details per Observable: Q & Q’via Head Tail: Status

  • Monitors, scope and front end software will be ready for the start-up

  • We’ll start with a scope and basic FESA class transmitting the raw data like in the SPS.

  • We plan to use the exiting expert application to assess this system

  • No operational application is foreseen for the start-up.

BI Readiness [JJ Gras]


Details per observable q q via schottky monitors status

Details per Observable: Q & Q’via Schottky monitors: Status

  • Monitors marked for phase II but ready and installed. We’ll use the same electronics and front end software than for the BBQ system

  • This is not a priority. The corresponding operational application will be developed if time allows.

BI Readiness [JJ Gras]


Lhc beam instrumentation readiness

...

BI Readiness [JJ Gras]


Details per observable luminosity brana branb status

Details per Observable: LuminosityBRANA & BRANB: Status

  • Monitors will be ready for the start-up.

    • 4 BRANA (left and right IP 1 and 5) developed by Berkeley

    • 4 BRANB (left and right IP 2 and 8) developed by AB/BI]

  • AB/BI electronics and front end software will be ready for the start-up. So should be Berkely.

  • We’ll basically have 2 acquisitions per IP:

    • Total relative luminosity at 1 Hz: this quantity is proportional in an unknown but constant way to the actual luminosity; the proportionality constant may differ from IP to IP.

    • Bunch by bunch relative luminosity at 0.1 Hz:

BI Readiness [JJ Gras]


Details per observable luminosity brana branb remaining issues

Details per Observable: LuminosityBRANA & BRANB: Remaining Issues

  • HW

    • Commissioning with Beam

    • Signal level and quality.

  • Operational Application:

    • Operational application to be started

BI Readiness [JJ Gras]


Conclusions

Conclusions

...

BI Readiness [JJ Gras]


A word on a hypothetic sector test

A word on a hypothetic sector test

  • The new enlarged BPM (BPMWI) will be available soon.

  • We still have to

    • HW commission the LSS8 BTV

    • Get missing Ethernet connections in UJ76

  • We would install an ad-hoc system (not the final one) to measure intensity from the BPM close to the end.

  • So we could be ready if necessary.

BI Readiness [JJ Gras]


Conclusions1

Conclusions

  • Except for the BGI on beam 2 (destroyed during bad bake-out), our instruments will be available on time.

  • The targeted performances (in terms of accuracy and resolution) of these instruments are the one described in the LHC beam instrumentation functional specifications.

  • But we will need a lot of MD time with stable beam conditions to commission our instruments and reach this performance.

  • We will discuss and document these commissioning procedures during the coming months and come back to you to fit the result in ‘the 2 months for commissioning to 7TeV’

BI Readiness [JJ Gras]


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