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 RANSFER 4 C ONCLUSION 5 S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 2 / 16
P REAMBLE 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 S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 3 / 16
I NJECTION I NJECTION S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 4 / 16
I NJECTION 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 S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 5 / 16
L ONGITUDINAL L ONGITUDINAL S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 6 / 16
L ONGITUDINAL 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) S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 7 / 16
L ONGITUDINAL 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 S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 8 / 16
L ONGITUDINAL H IGHEST P RIORITIES 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 S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 9 / 16
T RANSVERSE T RANSVERSE S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 10 / 16
T RANSVERSE 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 S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 11 / 16
T RANSVERSE H IGHEST P RIORITIES 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 S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 12 / 16
E XTRACTION AND T RANSFER E XTRACTION AND T RANSFER S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 13 / 16
E XTRACTION AND T RANSFER 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 S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 14 / 16
C ONCLUSION C ONCLUSION S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 15 / 16
C ONCLUSION 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! S IMON A LBRIGHT (BE-RF-BR) LIU-PSB MD S F EBRUARY 19, 2018 16 / 16
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