Beam InstrumentsPSB + Transfer Lines

B. Mikulec, J-F. Comblin

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Scope

Overview of beam instruments Installed in PSB injection line (BI line) Installed in PSB rings (BR) Installed in PSB extraction lines (BT, BTP, BTM, BTY)

Operational/development/obsolete Criticality Other issues

Beam instrumentation to be installed for the PSB upgrade (LIU-PSB) not mentioned here

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PSB Injection

Splitting into 4 PSB rings downstream of BI.SMV10 (synoptics still to be updated for naming changes…) LT+LTB lines are under Linac2 responsibility

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BI (PSB Injection) LineInstruments

Number Installed

Status Usage Comments

BPMs 12 operational

Critical for operation(beam steering)

New BPMs installed during LS1

BLMs 6 operational

Critical for operation (loss control)

ACEMs to be replaced by LHC-type ICs (LS2)

BCTs 5 operational

Critical for operation (loss control, Vistar, OP display, statistics)

New electronics (TRIC); rewinding for BI.BCT10/20 to be compatible with Linac4

BTVs 4 operational

Critical for setting up

All instruments except BLMs are declared in layout DB.

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PSB Rings

Only sections 7-11 (out of 16 PSB sections) are shown here as example…

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PSB Rings – PickupsInstruments Numbe

r Installed

Status Usage Comments

BRr.BPMiL3 (i=1…16)

4x16 operational

Critical for operation(orbit correction, radial loop, measurement of optic parameters)

Turn-by-turn electronics renovation to be finalized

BRr.BPTF4L5 4x1 operational

Critical for operation(transverse feedback)

RF-related

BRr.BPP1L5/5L1/8L1/11L2/14L4

4x5 operational

Critical for operation(phase pickup)

RF-related

BRr.BPMT3L1 4x1 operational

Critical for performance* (tune measurement)

BRr.BPM7L2 4x1 For MDs Not critical for operation

Half-turn pickup

BRr.UQD3L1 1 For MDs Quadrupolar pickup; not critical for operation

Name should be changed…; no remote readout

All instruments are declared in layout DB.

r=1…4 (PSB ring number)

* Critical for performance: PSB could operate without the instrument for a limited time.

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PSB Rings – Intensity/Current

Instruments Number Installed

Status Usage Comments

BRr.BCTDC9L1 4x1 operational Critical for operationVistar, Samplers, OP display, Statistics, LHC beam quality check, Beamscope

BRr.BCTF8L1 4x1 operational Critical for performance(fast beam intensity)

OASIS

BRr.BCTI8L1 4x1 Installed, but not yet operational

Critical for operation from LS2 (intermediate beam intensity)

Will be used with Linac4 (injection watchdog); new electronics

BRr.BCW8L1 4x1 operational Critical for operation(longitudinal profile measurement for bunch shape measurement, tomoscope)

RF-related.Vacuum leak during LS1.

All instruments are declared in layout DB.

r=1…4 (PSB ring number)

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PSB Rings – Other Instruments

Instruments

Number Installed

Status Usage Comments

BRr.BWS.2L1(wire scanners)

4x2 operational

Critical for operation(Profile + Emittance measurement)(only 1 transv. emittance meas. instrument per ring/plane!)

Calibrated spares have to be available; MDs to be repeated to validate performance.LHC beam quality check.

BR.BTV15L1 1 operational

Critical for setting up

BLMs 16x216x2

operational

Critical for operation (beam loss)

ACEMs + LHC-type ICs (new!) in parallel; loss studies to be done this run, but electronics not yet available! ACEMs to be replaced during LS2.

BR3.MSF1L1 (SEM fil)

1 obsolete Will be removed during LS2.

All instruments except BLMs are declared in layout DB.

r=1…4 (PSB ring number)

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BT Line

Complex recombination 4 2 1 ring…

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BT (PSB Transfer) LineInstruments

Number Installed

Status Usage Comments

BPMs 10 operational

Critical for operation(beam steering)

New BPMs; difficult geometry (tilts, offsets)

BLMs 7 operational

Critical for operation (loss control, interlocks)

ACEMs to be replaced by LHC-type ICs (LS2)

BCTs 1 operational

Critical for operation(loss control, Vistar, OP display, statistics)

New BCT (+TRIC)

BTVs 5 operational

Critical for setting up

All instruments except BLMs are declared in layout DB.

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BTP Line

Wall between PSB and PS tunnels

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BTP (PSB Transfer to PS) LineInstruments

Number Installed

Status Usage Comments

BPMs 4 operational

Critical for operation(beam steering)

New BPMs

BLMs 2 operational

Critical for operation (loss control, interlocks)

ACEMs to be replaced by LHC-type ICs (LS2)

BCTs 1 operational

Critical for operation(loss control, Vistar, OP display, statistics)

New BCT (+TRIC)

BTVs 1 operational

Critical for setting upAll instruments are declared in layout DB.

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BTM Line

PSB measurement line (emittance measurement) and PSB dump.

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BTM (PSB to Measurement) LineInstruments

Number Installed

Status Usage Comments

BPMs 2 operational

Critical for operation(beam steering)

New BPMs

BLMs 3 operational

Critical for operation (loss control, interlocks)

ACEMs to be replaced by LHC-type ICs (LS2)

BCTs 1 operational

Critical for operation(loss control, Vistar, OP display, statistics)

Old BCT (+TRIC)

SEM grids 3 operational

Critical for operation(profile + emittance measurement)

Renovated electronics. Cross-check with BWS.

BTVs 3 operational

Critical for setting up

All instruments are declared in layout DB.

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BTY Line

Splitting into ISOLDE GPS and ISOLDE HRS targets at the end.

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BTY (PSB to ISOLDE) LineInstruments

Number Installed

Status Usage Comments

BPMs 4 operational

Critical for operation (beam steering)

New BPMs

BLMs 9 operational

Critical for operation (loss control, interlocks, beam steering at high intensity)

ACEMs to be replaced by LHC-type ICs (LS2)

BCTs 4 operational

Critical for operation (loss control, GPS/HRS watchdogs, OP display, statistics)

New BCTs (+TRIC)

SEM grids 3 operational

Critical for Isolde setting up (profile + beam alignment on target)

Several setups per month.Renovated electronics.

BTVs 5 operational

Critical for setting up

The BTY line is not yet declared in the layout DB.

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Instrument SummaryInstruments

Total # installed

Setup Performance

Operation

MD Obsolete

BPMs 129 4 120 5

BLMs 91 91

BCTs 24 4 20

BTVs 19 19

BWS 8 8

SEM grids 6 3 3

Others 1 1

278 22 8 242 5 1

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Conclusions278 BI equipment currently installed in PSB complex

(187 without BLMs)

Practically all installed instruments in the PSB are critical for operation. Many instrument modifications (equipment +

electronics + software) during LS1. New instruments for LS2.

Instruments in layout DB except for BTY line and certain BLMs; will follow

Optics have been updated Positions are currently being corrected in layout DB

GEODE will be updated with new names

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Beam offBRr.BCTDC9L1: beam intensity in the rings; also used

for ISOLDE+EAST beams intensity interlock

BRr.BCW8L1: essential for bunch synchronisation

BRr.BPTF4L5: no high intensity beams in case of failure

BPMs in extraction lines: failure of 1 can be worked around short-term, but need to compensate with others (recombination and bunch spacing)

BCTs in extraction lines: failure of 1 can be worked around short-term, but need to compensate with others

BLMs in extraction lines: could probably live a few days with one broken (would need to be removed from interlock!)