28/09/2006MG – ABP General meeting1 HIGHLIGHTS OF LOC ACTIVITIES IN 2006 M. Giovannozzi on behalf...

28/09/200628/09/2006 MG – ABP General meetingMG – ABP General meeting 11

HIGHLIGHTS OF LOC ACTIVITIES IN HIGHLIGHTS OF LOC ACTIVITIES IN 20062006

M. Giovannozzi M. Giovannozzion behalf of LOC memberson behalf of LOC members

Ralph AssmannRalph AssmannChiara BraccoChiara BraccoHelmut BurkhardtHelmut BurkhardtRiccardo de MariaRiccardo de MariaStéphane FartoukhStéphane FartoukhJean-Bernard JeanneretJean-Bernard JeanneretAlex KoschikAlex KoschikLionel NeukermansLionel Neukermans

Yannis Papaphilippou Yannis Papaphilippou Thys Risselada Thys Risselada Guillaume Robert-Guillaume Robert-DemolaizeDemolaizeFeFederico Roncaroloderico Roncarolo

Frank SchmidtFrank Schmidt

Thomas WeilerThomas Weiler


SummarySummary

LHC Magnets activitiesLHC Magnets activities

LHC opticsLHC optics

LHC MAD-X on-line modelLHC MAD-X on-line model

Software tools for beam Software tools for beam dynamics simulationsdynamics simulations

LHC CommissioningLHC Commissioning

Collimation TeamCollimation Team

NAME s xc pxc yc pycIP2 3332.44 0.002 0 0.0015 0.00024IP2 3332.28 0.002 0 0.0015 0.00024

2800 3000 3200 3400 3600 3800sm

0.04

0.02

0

0.02

0.04

ym

7x,7y,5tenvelope

2800 3000 3200 3400 3600 3800sm

0.04

0.02

0

0.02

0.04

ym

7x,7y,5tenvelope


LHC Magnets activities - ILHC Magnets activities - ILHC Magnet Team: LHC Magnet Team: S.Fartoukh, J.-B. S.Fartoukh, J.-B. Jeanneret, Y. Papaphilippou, F. Schmidt, M. Jeanneret, Y. Papaphilippou, F. Schmidt, M. GiovannozziGiovannozzi (with support from (with support from S. GilardoniS. Gilardoni - - LII). LII).

Structure: each team member is responsible for a Structure: each team member is responsible for a set of magnets’ classesset of magnets’ classes

S. Fartoukh: main dipole and Activity LeaderS. Fartoukh: main dipole and Activity LeaderY. Papaphilippou: main quadrupolesY. Papaphilippou: main quadrupolesF. Schmidt: low-beta tripletsF. Schmidt: low-beta tripletsM. Giovannozzi: insertion magnets (dipoles and M. Giovannozzi: insertion magnets (dipoles and quadrupoles) and MEB secretaryquadrupoles) and MEB secretaryJ.-B. Jeanneret: aperture expert and consultant for all J.-B. Jeanneret: aperture expert and consultant for all magnet classesmagnet classesS. Gilardoni: support for main dipoles geometry.S. Gilardoni: support for main dipoles geometry.

Results of studies reported at Results of studies reported at Magnet Magnet Evaluation BoardEvaluation Board, where each magnet is , where each magnet is assigned to a specific slot in the LHC ring assigned to a specific slot in the LHC ring defining optimised installation sequence.defining optimised installation sequence.


LHC Magnets activities - LHC Magnets activities - IIII

Aim: Aim: improve/optimize machine improve/optimize machine performanceperformance

Approach: Approach: use mechanical/geometrical use mechanical/geometrical data and measured field quality to data and measured field quality to define slot in the machine.define slot in the machine.


Flip-flop and Flip-flop and –pairing on b3 in sector 78 and –pairing on b3 in sector 78 and 3434

Sector 78: ap. V1 Sector 34: ap. V2

Few Xs3’s Xs1 Noell magnets Alstom and Ansaldowith very low b3.

Typical -pairing + flip-flop

Typical -pairing +flip-flop

S. Fartoukh, MEB107


LHC Magnets activities - IIILHC Magnets activities - III

Results (approval status): Results (approval status): Main dipoles: 83% approved (Main dipoles: 83% approved (1018 MBs1018 MBs))

Main quadrupoles: 84% approved (Main quadrupoles: 84% approved (301 SSS301 SSS))

Low-beta triplets: 83% approved (Low-beta triplets: 83% approved (20 MQX20 MQX))

Insertion magnets: Insertion magnets: D1 (cold and warm) -> 100% approvedD1 (cold and warm) -> 100% approved

D2 -> 75% approvedD2 -> 75% approved

D3/D4 (cold and warm) -> 100% approvedD3/D4 (cold and warm) -> 100% approved

Warm quadrupoles -> 100% approvedWarm quadrupoles -> 100% approved

Other insertion quadrupoles -> 59% approvedOther insertion quadrupoles -> 59% approved

The expertise will be used for the The expertise will be used for the commissioning!commissioning!


LHC optics - ILHC optics - IThe section is also responsible for the optics The section is also responsible for the optics of the machine, the official database (both of the machine, the official database (both machine and transfer lines)machine and transfer lines)

Insertion optics responsible:Insertion optics responsible:IR1/IR5 (IR1/IR5 (ATLAS/CMSATLAS/CMS): S. Fartoukh): S. Fartoukh

special high-beta configurations, e.g., TOTEM: special high-beta configurations, e.g., TOTEM: H. Burkhardt. H. Burkhardt.

FP420: F. RoncaroloFP420: F. Roncarolo

IR2 (IR2 (ALICEALICE): ): J. JowettJ. Jowett (LII) (LII)

IR3/IR7 (IR3/IR7 (Collimation IRsCollimation IRs): T. Risselada ): T. Risselada

IR8 (IR8 (LHCBLHCB): Y. Papaphilippou): Y. Papaphilippou

IR4/IR6 (IR4/IR6 (RF and beam dump IRsRF and beam dump IRs): M. ): M. GiovannozziGiovannozzi

LHC injection: H. Burkhardt, A. Koschik and T. LHC injection: H. Burkhardt, A. Koschik and T. RisseladaRisselada


LHC optics - IILHC optics - IIThe official optics database is maintained by T. The official optics database is maintained by T. Risselada -> Risselada -> /afs/cern.ch/eng/lhc/optics/V6.500/afs/cern.ch/eng/lhc/optics/V6.500..

The official web pages are generated by J. Jowett -> The official web pages are generated by J. Jowett -> http://cern.ch/lhcopticshttp://cern.ch/lhcoptics. They allow functional access (via Java, . They allow functional access (via Java, Excel, etc.) to the optics MAD files, aperture model and pre-Excel, etc.) to the optics MAD files, aperture model and pre-calculated optics data across the Internetcalculated optics data across the Internet

30003250

35003750

sm

0.040.0200.02

0.04

xm

0.04

0.02

0

0.02

0.04

ym

30003250

35003750

sm

0.040.0200.02

0.04

xmIR2, Beam 1 IR2, Beam 1 envelopeenvelope

http://cern.ch/lhcoptics


LHC optics - IIILHC optics - IIISome results:Some results:

Finalisation of V6.500 optics (including aperture model).Finalisation of V6.500 optics (including aperture model).Computation of the complete squeeze sequence for IR1/5 Computation of the complete squeeze sequence for IR1/5 including also crossing scheme.including also crossing scheme.Analysis of the optics for the special configuration for the Analysis of the optics for the special configuration for the 450 GeV run in 2007.450 GeV run in 2007.Computation of a special “flat beam” optics for IR1/5 Computation of a special “flat beam” optics for IR1/5 allowing luminosity increaseallowing luminosity increasePreparation of the sequence for Preparation of the sequence for Beam 2Beam 2 for tracking for tracking (long-standing issue)(long-standing issue)

Work in progress:Work in progress:New optics for IR3/7?New optics for IR3/7?

On top of the On top of the linearlinear optics activities, numerical optics activities, numerical simulations (tracking) absorb quite some resources simulations (tracking) absorb quite some resources ((also for IR upgrade studies -> R. de Mariaalso for IR upgrade studies -> R. de Maria)!)!

Efforts to improve routines to assign magnetic errors and Efforts to improve routines to assign magnetic errors and possibility to use magnetic errors from database (joint possibility to use magnetic errors from database (joint enterprise with AT/MAS). Misalignment errors will come enterprise with AT/MAS). Misalignment errors will come (soon).(soon).Study of beta-beating using measured magnetic errors (Study of beta-beating using measured magnetic errors (R. R. TomásTomás – – RLCRLC - and - and R. CalagaR. Calaga))

=11m (injection optics with phase shift x/y=0.015/0.005 to accomodate the collision tune)

=0.55m=1.5m=4m

=5m=7m


LHC MAD-X on-line model LHC MAD-X on-line model

One of the tasks of the section is also to One of the tasks of the section is also to prepare an on-line model for the LHC in prepare an on-line model for the LHC in view of machine commissioning and view of machine commissioning and operationoperation

Responsible: F. Schmidt with contributions Responsible: F. Schmidt with contributions by by W. HerrW. Herr

First milestone: CNGS commissioning.First milestone: CNGS commissioning.

Results: Results: validation of software tools. validation of software tools.

SDDS is now in MAD-X. SDDS is now in MAD-X.

Analysis of missing items. Analysis of missing items.

In the future, the SPS will be used as test bed for In the future, the SPS will be used as test bed for additional tests. additional tests.


Software tools for beam dynamics Software tools for beam dynamics simulations simulations

Responsibility for the main simulation programs, Responsibility for the main simulation programs, MAD-X and SixTrack-> F. Schmidt is the MAD-X and SixTrack-> F. Schmidt is the custodian.custodian.

Level of support changed in order to cope with other Level of support changed in order to cope with other tasks (MAD-X on-line model).tasks (MAD-X on-line model).

Polymorphic Tracking Code fully embedded in MAD-X Polymorphic Tracking Code fully embedded in MAD-X to provide functionalities for the on-line model (thanks to provide functionalities for the on-line model (thanks also to É. Forest). also to É. Forest).

The generic tracking environment was developed by F. The generic tracking environment was developed by F. Schmidt with contributions from E. McIntosh. This Schmidt with contributions from E. McIntosh. This allows running simulations on:allows running simulations on:

CERN lxplus clusterCERN lxplus cluster

CERN CPSS (your PC once it is inactive)CERN CPSS (your PC once it is inactive)

BOINC (PC cluster world-wide) and BOINC (PC cluster world-wide) and

GRIDGRID


LHC CommissioningLHC CommissioningPeople involved: People involved:

Future Commissioner in Charge: R. Assmann, S. Future Commissioner in Charge: R. Assmann, S. Fartoukh, M. Giovannozzi.Fartoukh, M. Giovannozzi.Responsible for experimental backgrounds : H. Responsible for experimental backgrounds : H. BurkhardtBurkhardtSystem responsible/support (machine, System responsible/support (machine, instrumentation etc.): almost all LOC member will instrumentation etc.): almost all LOC member will contribute to these efforts… contribute to these efforts…

Last but not least…we contribute to many Last but not least…we contribute to many Committees and working Groups:Committees and working Groups:

Collimation Working GroupCollimation Working GroupField Quality Working GroupField Quality Working GroupLHC Commissioning Working GroupLHC Commissioning Working GroupLHC Technical CommitteeLHC Technical CommitteeLHC Technical Coordination CommitteeLHC Technical Coordination CommitteeMachine Protection Working GroupMachine Protection Working GroupMagnet Evaluation BoardMagnet Evaluation BoardWorking Group on AlignmentWorking Group on Alignment


Collimation Team Collimation Team Members: R. Assmann (LHC Collimation PL), Members: R. Assmann (LHC Collimation PL), C. Bracco, G. Robert-Demolaize, (S. Redaelli C. Bracco, G. Robert-Demolaize, (S. Redaelli is still contributing), T. Weiler.is still contributing), T. Weiler.

Main tasks: evaluation of the performance of Main tasks: evaluation of the performance of the collimation system and operational the collimation system and operational procedures.procedures.


First LHC Collimators Produced First LHC Collimators Produced and Installed…and Installed…

First ring collimator in 8L.

(triplet protection for beam 1)

- June 14th -

10 minutes installation: checking on quick-plugs…

Courtesy R. Courtesy R. AssmannAssmann


Beam1 and Beam1 and Beam 2Beam 2 Loss Loss SimulationsSimulations

Beam1, 7 TeVBetatron cleaningIdeal performance

Beam2, 7 TeVBetatron cleaningIdeal performanceTCDQ

TCDQ

Quench limit (nominal I, =0.2h)

Local inefficiency:Local inefficiency: #p lost in bin over total #p lost over length of aperture bin! New!New!

Quench limit (nominal I, =0.2h)

Loca

l ine

ffic

ienc

y [1

/m]

Courtesy R. Courtesy R. AssmannAssmann

28/09/2006MG – ABP General meeting1 HIGHLIGHTS OF LOC ACTIVITIES IN 2006 M. Giovannozzi on behalf...

Documents

Transcript of 28/09/2006MG – ABP General meeting1 HIGHLIGHTS OF LOC ACTIVITIES IN 2006 M. Giovannozzi on behalf...