mg - apc meeting 29/02/20081 mte commissioning strategy and requirements m. giovannozzi what is...

MG - APC meeting 29/02/2008MG - APC meeting 29/02/2008 11

MTE commissioning strategy and MTE commissioning strategy and requirementsrequirements

M. GiovannozziM. Giovannozzi

What is needed to implement MTEWhat is needed to implement MTE

ScheduleSchedule

CommissioningCommissioning

Acknowledgements: A. Franchi, S. Gilardoni and Acknowledgements: A. Franchi, S. Gilardoni and G. Arduini, M. Benedikt, E. Métral, Y. Papaphilippou, G. Arduini, M. Benedikt, E. Métral, Y. Papaphilippou, R. SteerenbergR. Steerenberg


What is needed to implement What is needed to implement MTE - IMTE - I

Beam splitting:Beam splitting:Magnets: Sextupoles and new octupoles. Magnets: Sextupoles and new octupoles. Power converters: New devices to replace old Tekelec.Power converters: New devices to replace old Tekelec.

Beam extraction:Beam extraction:Slow bump: New power converters (capacitor Slow bump: New power converters (capacitor discharge).discharge).Fast bump: New kickers.Fast bump: New kickers.Trajectory correction in the TT2 lineTrajectory correction in the TT2 line

Displacement and upgrade of Emittance Reduction Dipoles Displacement and upgrade of Emittance Reduction Dipoles (ERDs or DFAs).(ERDs or DFAs).

Aperture:Aperture:Replacement of vacuum chambers in straight sections (SS).Replacement of vacuum chambers in straight sections (SS).Replacement of vacuum chamber in magnet units (MU).Replacement of vacuum chamber in magnet units (MU).


What is needed to implement What is needed to implement MTE - IIMTE - II

Extraction proper: slow bumpExtraction proper: slow bumpSix dipoles, independently powered, are foreseen. Six dipoles, independently powered, are foreseen. Large number of magnets -> optimal bump shape.Large number of magnets -> optimal bump shape.Present slow bump: four dipoles powered with a Present slow bump: four dipoles powered with a series/parallel circuit.series/parallel circuit.

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Slow bump for CTSlow bump for MTE

Origin of s coordinate: SS54

Courtesy O. BerrigCourtesy O. Berrig

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Courtesy O. BerrigCourtesy O. BerrigMG - APC meeting 29/02/2008MG - APC meeting 29/02/2008 44

Extraction proper: fast bumpExtraction proper: fast bumpFive kicker systems in the PS ring. Five kicker systems in the PS ring. Two kickers to correct the extraction trajectories in the Two kickers to correct the extraction trajectories in the transfer line.transfer line.Maximum kick about 1.8 mrad at 14 GeV/Maximum kick about 1.8 mrad at 14 GeV/c.c.

Fast bump for Fast bump for extracting the fifth extracting the fifth turn (centre core)turn (centre core)

What is needed to implement What is needed to implement MTE - IIIMTE - III

Courtesy T. FowlerCourtesy T. Fowler


The Kicker systems will be implemented in two phases: The Kicker systems will be implemented in two phases: Phase 1Phase 1 will use the KFA13/21 and KFA4 sub-systems will use the KFA13/21 and KFA4 sub-systems to validate the new extraction method in the PS to validate the new extraction method in the PS machine, whilst maintaining the existing Continuous machine, whilst maintaining the existing Continuous Transfer (CT) system operational. Will be operational Transfer (CT) system operational. Will be operational for 1for 1stst July 2008. July 2008. All new phase 1 surface equipment will be located in All new phase 1 surface equipment will be located in building 367.building 367.The systems have been designed to maximize, where The systems have been designed to maximize, where possible, the re-use of existing, spare equipmentpossible, the re-use of existing, spare equipmentOnce the new scheme is validated, the existing CT Once the new scheme is validated, the existing CT will be dismantled and the will be dismantled and the second phase second phase sub-sub-systems, systems, DFA242/254DFA242/254, needed for trajectory , needed for trajectory correction (correction (TT2TT2) and KFA9 for perfect bump closure ) and KFA9 for perfect bump closure ((PS ringPS ring), will be modified/installed, for start-up 2009), will be modified/installed, for start-up 2009

What is needed to implement What is needed to implement MTE - IVMTE - IV


What is needed to implement What is needed to implement MTE - VMTE - V

Legend: Legend: Red circle -> “heavy” Red circle -> “heavy” intervention: intervention: mechanical design, mechanical design, vacuum intervention.vacuum intervention.Orange circle -> “light” Orange circle -> “light” intervention: auxiliary intervention: auxiliary magnet exchange.magnet exchange.Green: work done Green: work done during the 2006/7 shut during the 2006/7 shut down.down.

SS02SS02

SS13SS13SS12SS12 SS08SS08SS04SS04

SS03SS03

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MU14MU14SS15SS15

MU15MU15

MU16MU16

MU18MU18

MU19MU19

SS35SS35 SS39SS39SS55SS55

SS18SS18

SS19SS19

SS74SS74Extraction region

Extraction region

Sextupoles Sextupoles and octupolesand octupoles

PS ringPS ring

TT2TT2

DFA243DFA243DFA254DFA254 QFO105QFO105

SS1SS1

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MTE project: installation MTE project: installation status (summary)status (summary)

New octupoleNew octupole

New extraction New extraction vacuum chambervacuum chamber

New kicker in the PS tunnelNew kicker in the PS tunnel

New spare gamma-New spare gamma-jump quadrupolejump quadrupole

MG - APC meeting 29/02/2008MG - APC meeting 29/02/2008


MTE beam commissioning: first MTE beam commissioning: first period - Iperiod - I


MTE beam commissioning: first MTE beam commissioning: first period - IIperiod - II

First period (May-June 2008. Kickers not ready for First period (May-June 2008. Kickers not ready for beam, yet):beam, yet):

Setting up of the operation cycle with low-intensity, Setting up of the operation cycle with low-intensity, single-bunch beam (single-bunch beam (pencil-like beam required from PSBpencil-like beam required from PSB).).Setting up of the new slow bump 16. It implies also Setting up of the new slow bump 16. It implies also response measurements to have full control of the response measurements to have full control of the trimming capabilities of the various magnets.trimming capabilities of the various magnets.Non-linear chromaticity measurements (PS model Non-linear chromaticity measurements (PS model validation/determination).validation/determination).Resume splitting (Resume splitting (intermediate beam 3×10intermediate beam 3×101212 p/b required p/b required from PSBfrom PSB).).Switch to multi-bunch operation (Switch to multi-bunch operation (intermediate beam intermediate beam 3×103×101212 p/b required from PSB p/b required from PSB, corresponding to a total , corresponding to a total intensity of intensity of 2.4×102.4×101313 p p in the PS). in the PS).


MTE beam commissioning: first MTE beam commissioning: first period - IIIperiod - III

Some comments:Some comments:Setting up of the operation cycle, i.e. 1.2 s user, partially done Setting up of the operation cycle, i.e. 1.2 s user, partially done in 2007. in 2007. An in-depth setting up will be required (transverse and An in-depth setting up will be required (transverse and longitudinal planes)!longitudinal planes)!Few sessions for the hardware tests of the kickers. Pulsing the Few sessions for the hardware tests of the kickers. Pulsing the kickers should be done either on the “zero” user or after kickers should be done either on the “zero” user or after extraction of another selected user. Short accesses to the PS extraction of another selected user. Short accesses to the PS ring might be required. It will be difficult to schedule these test ring might be required. It will be difficult to schedule these test during dedicated MD sessions. during dedicated MD sessions. In principle, all the measurements require only parallel time.In principle, all the measurements require only parallel time.


MTE beam commissioning: first MTE beam commissioning: first period - IVperiod - IV

Beams required from PSB (in chronological order):Beams required from PSB (in chronological order):

Some comments:Some comments:Crucial details: management of archives, users etc. source of problems in 2007…to be improved in 2008.Crucial details: management of archives, users etc. source of problems in 2007…to be improved in 2008.Production of PSB beams: we must be extremely efficient this year!Production of PSB beams: we must be extremely efficient this year!High intensity beam has somewhat lower priority (it is very similar to High intensity beam has somewhat lower priority (it is very similar to nTOFnTOF dedicated beam). dedicated beam).

Beam typeBeam type Intensity/bIntensity/b Emittances* Emittances* (H/V)(H/V)

HarmonicHarmonic

Pencil Pencil 50×1050×101010 ~~2/2/~~11 11Moderate intensityModerate intensity 300×10300×101010 ~~9/9/~~66 11OperationalOperational 300×10300×101010 ~~9/9/~~66 22High intensityHigh intensity 600×10600×101010 ~~9/9/~~66 11

*Normalized, 1*Normalized, 1


MTE beam commissioning: second MTE beam commissioning: second period - Iperiod - I

Second period (Starting from July 2008. Kickers Second period (Starting from July 2008. Kickers available for extraction):available for extraction):

Test of the fast bump with a low-intensity, single-bunch Test of the fast bump with a low-intensity, single-bunch beam (no splitting). This might require some dedicated beam (no splitting). This might require some dedicated time at the beginning to avoid perturbing the fixed target time at the beginning to avoid perturbing the fixed target physics at the SPS.physics at the SPS.Five-turn extraction tests with a single bunch (Five-turn extraction tests with a single bunch (3×103×101212 p/b p/b) ) and steering to D3.and steering to D3.Multi-bunch extraction (Multi-bunch extraction (3×103×101212 p/b p/b, corresponding to a , corresponding to a total intensity of total intensity of 2.4 ×102.4 ×101313 p p in the PS) and steering to D3.in the PS) and steering to D3.Commissioning of full transfer to SPS. Commissioning of full transfer to SPS. Optics measurements and re-matching.Optics measurements and re-matching.


MTE beam commissioning: second MTE beam commissioning: second period - IIperiod - II

Some comments:Some comments:Commissioning of full transfer to SPS and optics Commissioning of full transfer to SPS and optics measurements might take place before multi-bunch measurements might take place before multi-bunch extraction.extraction.To perform optics measurements after full transfer To perform optics measurements after full transfer commissioning (with “undefined optics”) would profit from commissioning (with “undefined optics”) would profit from SPS instrumentation (first turn) for increased accuracy.SPS instrumentation (first turn) for increased accuracy.Beam structure to SPS is supposed to be bunched (Beam structure to SPS is supposed to be bunched (h=8 or h=8 or 1616) with superimposed 200 MHz modulation. ) with superimposed 200 MHz modulation. Tests of Tests of transfer between PS and SPS of bunched beams should be transfer between PS and SPS of bunched beams should be envisaged during separate MD sessionsenvisaged during separate MD sessions..In principle, all the measurements require only parallel In principle, all the measurements require only parallel time. BFA9 is supposed to work for both MTE and CT on a time. BFA9 is supposed to work for both MTE and CT on a PPM basis. PPM basis.


MTE beam commissioning: tools - IMTE beam commissioning: tools - I

List of required tools or improvements:List of required tools or improvements:Additional features to the FWS application: multi-Additional features to the FWS application: multi-gaussian fit and display of fit parameters. Multiple gaussian fit and display of fit parameters. Multiple measurements with display of fit parameters evolution.measurements with display of fit parameters evolution.Tune application: to ease tune control by means of low-Tune application: to ease tune control by means of low-energy quadrupoles during resonance.energy quadrupoles during resonance.Non-linear chromaticity measurement application: Non-linear chromaticity measurement application: already already existingexisting..Trimming of new extraction bump 16: five bumpers + Trimming of new extraction bump 16: five bumpers + DHZ15 will be used to generate the new bump. ABS-like DHZ15 will be used to generate the new bump. ABS-like application is needed.application is needed.Trajectory correction in TT2: Trajectory correction in TT2: already existingalready existing..


MTE commissioning: general MTE commissioning: general organization - Iorganization - I

ActivityActivity ABP/OP ABP/OP contributioncontribution

Other Other contributionscontributions

CommentsComments

MTE HW/control commissioningMTE HW/control commissioning OPOP Equipment Equipment specialistsspecialists

OP is OP is supposed to supposed to co-ordinateco-ordinate

MTE application SWMTE application SW OP help neededOP help needed Specs. already Specs. already providedprovided

MTE cycle and beam setting-up MTE cycle and beam setting-up OPOP Specs. Specs. availableavailable

MTE beam commissioning MTE beam commissioning ABP, OPABP, OP

Non-linear chromaticity Non-linear chromaticity measurement and PS model at measurement and PS model at 14 GeV/c 14 GeV/c

ABPABP OP (application for OP (application for measurements)measurements)

Crucial for Crucial for MTEMTE

TT2-TT10 matching TT2-TT10 matching ABPABP

CNGS beam on h=8/h=16 and CNGS beam on h=8/h=16 and extraction synchronization to extraction synchronization to bunch gapbunch gap

ABPABP PS/SPS RF expertsPS/SPS RF experts Loss Loss minimization minimization on septum 16on septum 16


MTE commissioning: known open MTE commissioning: known open issuesissues

Users: Ideally two at PSB (Users: Ideally two at PSB (it seems difficultit seems difficult) and two at the ) and two at the PS (PS (already available in previous yearsalready available in previous years).).Measurement devices (tune and beam profile) will be Measurement devices (tune and beam profile) will be crucial during commissioning. crucial during commissioning. Special support from BI for Special support from BI for tune measurement already agreed.tune measurement already agreed.Software applications: there will be some “expert” tools Software applications: there will be some “expert” tools (developed by ABP). (developed by ABP).

What to do in case of problems during nights and week-ends? What to do in case of problems during nights and week-ends? Proposal: switch to CT, while waiting to fix MTE. Proposal: switch to CT, while waiting to fix MTE. It is assumed that during the shutdown 2008/9 operational tools will It is assumed that during the shutdown 2008/9 operational tools will be contributed by OP (following experience from beam be contributed by OP (following experience from beam commissioning).commissioning).

General issue with manpower available (needless to say…)General issue with manpower available (needless to say…)

mg - apc meeting 29/02/20081 mte commissioning strategy and requirements m. giovannozzi what is...

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