PS2 collaboration page

This is a page for exchanging information on the PS2 within CERN and LARP.

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Tentative Machine Parameters 2009-04-02

Circunference m 1346.4
Harmonic Number 180
Number of bunches   168
Bunch spacing ns 25
RF Frequency MHz 40
Transition gamma 26i
Injection Energy GeV 4
Extraction Energy GeV 50
Max Bending Field T 1.7
Max Gradient T/m 15.5
Ramp time s 1.2
Cycle time s 2.4
Horiz. Tune 11.8
Vertical. Tune 6.71
Dipole length m 3.7
Beta max m 60
Dispersion max m 3.3
Chamber half width cm 6.3
Chamber half height cm 3.25
Chamber wall thickness mm 2
Chamber material   SS 316LN
Chamber shape   superelliptical, n=3

Proton for the LHC

Bunch intensity ppb 4E11
Hor. transverse emittance norm pi mm mrad 3
Vert. transverse emittance norm pi mm mrad 3

Proton for fix target

Bunch intensity ppb 6E11
Hor. transverse emittance norm pi mm mrad 9
Vert. transverse emittance norm pi mm mrad 6

Tentative injection data stationary bucket

Total longitudinal emittance eVs 0.4
RF Frequency MHz 39.3
RF Voltage MV 0.65
Synchrotron frequency Hz 2600
Synchronous phase rad 0.0
Total bunch length ns 17.8
Total energy spread   6.43e-3
Bunching factor   0.5

Lattice files

Current lattice:

Previous Lattice:

Old lattice:

Software tools

The lattice design tool used is MadX, available from MadX produces can output

  • a flat lattice description in a madx input language (.seq files). No drift, no lines, basically a set of variables and element declaration and a sequence of elements with their s position.
  • a flat table file (.tfs files) that includes either element parameters (including drifts) and optics function or element name and assigned magnetic error and misalignments.

The following python libraries can be used to parse those file:

People and their main interests

  • M. Benedikt, CERN (project leader)
  • Y. Papaphilippou, CERN, YannisPapaphilippou (lattice design, beam dynamics)
  • W. Bartmann, CERN (lattice design)
  • J. Barraco, CERN (collimation)
  • H. Bartosik, CERN, (lattice design, beam dynamics)
  • B. Goddard, CERN (injection and extraction)
  • M. Giovannozzi, CERN (multi turn extraction)
  • S. Hancock, CERN (Longitudinal aspects)
  • E. Jensen, CERN (RF system)
  • R. De Maria, BNL, RiccardoDeMaria (lattice, beam dynamics, transverse phase space diagnostic)
  • D. Trbojevic, BNL (lattice)
  • S. Peggs, BNL (lattice)
  • K. Brown, BNL (transverse phase space diagnostic)
  • M. Minty, BNL (transverse phase space diagnostic)
  • R. Connolly, BNL (transverse phase space diagnostic)
  • R. Gubta, BNL (SC magnet)
  • U. Wienands, SLAC (LARP coordination)
  • K. Bane, SLAC (collective effects)
  • G. Stupakov, SLAC (collective effects)
  • C. Rivetta, SLAC (collective effects)
  • C. Ng, SLAC (collective effects)
  • P. Spentzouris, FNAL (space charge)
  • M. Furman, LBL (e-cloud)
  • J. Byrd, LBL (laser stripping, e-cloud, collective effects)
  • S. de Santis, LBL (collective effects, e-cloud)
  • M. Venturini, LBL (e-cloud)
  • J. Vay, LBL (e-cloud)
  • G. Penn (e-cloud)
  • R. Wilcox, LBL (laser stripping)
  • R. Ryne, LBL (space charge)
  • J. Qiang, LBL (space charge)
  • M. Venturini, LBL (space charge)


-- HannesBartosik - 12-Feb-2010

Topic attachments
I Attachment History Action Size Date Who Comment
Unknown file formatseq 2009-02-05_ps2_nmcwithsup.seq r1 manage 15.8 K 2009-02-05 - 17:33 RiccardoDeMaria bare lattice
Unknown file formattfs 2009-02-05_ps2_ring.twiss.tfs r1 manage 2982.4 K 2009-02-05 - 17:34 RiccardoDeMaria twiss table
Unknown file formatseq 531ring_Nov19_17.27.seq r1 manage 21.1 K 2008-12-19 - 15:25 RiccardoDeMaria madx lattice
PowerPointppt FMC_finaloptics.ppt r1 manage 1159.0 K 2009-02-19 - 10:01 YannisPapaphilippou  
PowerPointppt FMC_finalopticsII.ppt r1 manage 684.0 K 2009-02-19 - 10:07 YannisPapaphilippou  
Unknown file formattfs NMCRINGTwiss_Feb2010.tfs r1 manage 288.7 K 2010-02-12 - 22:59 HannesBartosik MADX Twiss table
Unknown file formattfs NMCRING_06Dec_Twiss.tfs r1 manage 333.2 K 2009-12-17 - 15:33 HannesBartosik  
Unknown file formatmad8 NMC_SUP_13.25_8.25_sext_twiss.mad8 r1 manage 6.7 K 2009-02-19 - 09:55 YannisPapaphilippou Mad8 lattice with chromaticity sextupoles
Unknown file formatpptx PS2-Lattice080210.pptx r2 r1 manage 17458.9 K 2010-02-24 - 17:48 HannesBartosik Presentation on the lattice status from 08.02.2010
Unknown file formatseq PS2.06Dec.SO.c.seq r1 manage 37.8 K 2009-12-17 - 15:39 HannesBartosik MADX lattice, PS2 based on doublet straight section, 2 sextupole families chromaticity correction scheme
Postscriptps r1 manage 290.9 K 2009-12-17 - 15:42 HannesBartosik Twiss functions plots
Unknown file formatseq PS2_Feb2010.S.c.mad8.seq r1 manage 22.1 K 2010-02-12 - 23:24 HannesBartosik MAD8 lattice file
Unknown file formatseq PS2_Feb2010.S.c.seq r1 manage 22.0 K 2010-02-12 - 23:00 HannesBartosik MADX lattice Feb2010, PS2 based on doublet straight section, 4 sextupole families (extended) chromaticity correction scheme
PDFpdf Projektarbeit_Iris_Vonderhaid.pdf r1 manage 1659.2 K 2009-04-02 - 18:29 RiccardoDeMaria  
Postscriptps r1 manage 310.6 K 2008-12-19 - 15:26 RiccardoDeMaria plots
Postscriptps r1 manage 413.2 K 2010-02-12 - 23:02 HannesBartosik Twiss functions plots Feb2010
Texttxt r2 r1 manage 2.5 K 2009-02-27 - 15:50 RiccardoDeMaria  
Unknown file formatseq ring_chrom.seq r1 manage 27.1 K 2008-12-19 - 20:01 RiccardoDeMaria lattice with chromaticiy corrected
Texttxt r1 manage 1.4 K 2009-02-27 - 15:53 RiccardoDeMaria  
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Topic revision: r29 - 2010-04-06 - UliWienands
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