LIU-PSB MD S AND S TUDIES : 2018 Simon Albright BE-RF-BR February - - PowerPoint PPT Presentation

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LIU-PSB MD S AND S TUDIES : 2018 Simon Albright BE-RF-BR February 19, 2018 S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 1 / 16 I NJECTION 1 L ONGITUDINAL 2 Highest Priorities T RANSVERSE 3 Highest Priorities E XTRACTION AND T

SLIDE 1

LIU-PSB MDS AND STUDIES: 2018

Simon Albright

BE-RF-BR

February 19, 2018

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 1 / 16

SLIDE 2

1

INJECTION

2

LONGITUDINAL

Highest Priorities

3

TRANSVERSE

Highest Priorities

4

EXTRACTION AND TRANSFER

5

CONCLUSION

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 2 / 16

SLIDE 3

PREAMBLE Too many MDs and studies to go into detail for all of them LIU-PSB Beam Dynamics Working Group set up last year for beam dynamics studies (simulatons and measurements) for all post-LS2 beams - Indico: https://indico.cern.ch/category/9756/ “Medium” and “High” priority MDs listed with additional details on some higher priority items

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INJECTION

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 4 / 16

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INJECTION

Injection synchronisation - M. E. Angoletta (10)

Validation of RF synchronisation algorithm for injection with Linac4

Validation of LLRF interlock - M. E. Angoletta (4)

Tests for veto to injection and cycle abort triggered by LLRF

Injection simulations with current Linac4 conditions - C. Bracco, V. Forte, F . Antoniou (Numerical)

Numerical studies for Linac4 injection Detailed simulations for high priority beams with reeduced Linac4 current and lattice imperfections

14 MD blocks

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 5 / 16

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LONGITUDINAL

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 6 / 16

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LONGITUDINAL

White Rabbit Commissioning - M. E. Angoletta, A. Findlay, M. Buzio, A. Beaumont, J. Vella Wallbank (8 + reliability run) RF Phase Noise - S. Albright, D. Quartullo, M. E. Angoletta (4 + reliability run) New magnetic cycle - S. Albright (Numerical) Finemet reliability - A. Findlay, M. E. Angoletta, M. Paoluzzi (8 + reliability run) RF Phase Alignment - S. Albright (8) Longitudinal painting - V. Forte, S. Albright (Numerical) H1 Synchro with H2 Beam - A. Findlay (8)

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 7 / 16

SLIDE 8

LONGITUDINAL

New Finemet features - M. E. Angoletta (20) FESA Upgrades - M. Jaussi (?) Variable attenuation Ring 0 - M. Jaussi (5) White Rabbit B-Train in RF feedback loop - J. Vella Wallbank, A. Beaumont (4) Integrated B-Train in RF feedback loop - J. Vella Wallbank, A. Beaumont (4) New LLRF features - M. E. Angoletta (?) 69 MD blocks

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 8 / 16

SLIDE 9

LONGITUDINAL HIGHEST PRIORITIES

White Rabbit Commissioning - M. E. Angoletta, A. Findlay, M. Buzio (8 + reliability run)

Revalidation of WR B-train distribution Prepare and perform reliability run

Finemet reliability - A. Findlay, M. E. Angoletta, M. Paoluzzi (8 + reliability run)

Ongoing studies with Finemet test cavity Reliability run to focus on MTE after 2017 experience

Longitudinal painting - V. Forte, S. Albright (Numerical)

Inclusion of more realistic physics Operational considerations

New Finemet features - M. E. Angoletta (20)

Additional features to be tested on Ring 0 LLRF

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TRANSVERSE

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 10 / 16

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TRANSVERSE

β beating - F . Antoniou, A. Valdivieso, P . Zisopoulos (>6 Includes dedicated) Alignment - F . Antoniou, P . Zisopoulos (?) Loss maps - F . Antoniou, A. Santamaria Garcia (>25) TFB Commissioning - F . Antoniou, A. Blas, G. P . Di Giovanni (15) Emittance Preservation - A. Santamaria Garcia (10) Emittance comparison WS:SEM grids - G. P . Di Giovanni (10) Impedance measurements - T. Rijoff (?) New wire-scanner - J. Sirvent Blasco (?) Space charge with QPU - A. Oeftiger (4) Space charge at high intensities - E. Koukovini Platia (20) Non-linear Chromaticity - F . Antoniou, H. Bartosik (?) BCMS Brightness at different working points - F . Antoniou, G. P . Di Giovanni, H. Bartosik (?) >90 MD blocks

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 11 / 16

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TRANSVERSE HIGHEST PRIORITIES

β beating - F . Antoniou, A. Valdivieso, P . Zisopoulos (>6 Includes dedicated)

Dedicated MD for studies at flat-top using extraction kicker Studies at injection energy for injection matching

Loss maps - F . Antoniou, A. Santamaria Garcia (>25)

Losses at different working points Losses due to resonances

TFB Commissioning - F . Antoniou, A. Blas, G. P . Di Giovanni (15)

New TFB for post-LS2 beams Validation of the new electronics

Impedance measurements - T. Rijoff (?)

Beam based measurements of transverse impedance Validation of impedance model Must be completed before June

New wire-scanner - J. Sirvent Blasco (?)

Studies of new (non-operational) wire scanner to assess performance

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 12 / 16

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EXTRACTION AND TRANSFER

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EXTRACTION AND TRANSFER

Transfer line rematching - V. Forte (?)

Minimising transverse emittance blow-up in PSB to PS transfer Falls under LIU-PS jurisdiction, but requires special beams from the PSB

Blow-up as a function of longitudinal parameters - S. Albright, A. Oeftiger (4)

Dispersive blow-up at high dp

p , space charge blow-up at low dp p

Falls under LIU-PS jurisdiction, but requires special beams from the PSB

Extraction stability (effect of preceding cycle) - G. P . Di Giovanni,

T. Bukovics (?)

New BT.BTM optics - C. Hessler (2) LHC Beam with 3+3 injections - OP+RF (?)

Studying options for LHC filling if one PSB ring is unavailable

Extraction at 160 MeV - V. Forte, G. P . Di Giovanni, F . Antoniou (2 Dedicated) Shorter cycle for SPS injection losses - J. Sanchez Alvarez (?) >8 MD blocks

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SLIDE 15

CONCLUSION

SIMON ALBRIGHT (BE-RF-BR) LIU-PSB MDS FEBRUARY 19, 2018 15 / 16

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CONCLUSION

Injection: 14 MD blocks Longitudinal: 69 MD blocks Transverse: >90 MD blocks Extraction and Transfer: >8 MD blocks Total: >181 MD blocks Assuming MDs available from 1st April to the end of the proton run: 32 weeks of 5 working days with 2 MDs per day = 320 MD blocks available More than half of the “available” MD time already claimed with medium and high priority MDs, more will be required in practice. Additional MD slots will rapidly fill up with overflow, beam set-up, technical stops, interventions etc. LS2 is rapidly approaching!

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