CLIC DR collaboration page

This is a page for exchange information on the CLIC Damping Rings (DR) and Pre-Damping Rings (PDR) between the CLIC DR group.

Feel free to edit or add additional informations. In order to edit the page is necessary to register at Registration using CERN credential. External user may get an account going to the External account registration.

Pre-damping Rings parameters

Parameter [Unit] Value (2GHz) Value (1GHz)
Energy [GeV] 2.86
Circunference [m] 389.15
Number of trains 1 2
Bunches per train 312 156
Bunch spacing [ns] 0.5 1
Bunch population [109] 4.5
Basic cell type TME
Number of dipoles 38
Dipole field [T] 1.2
Transverse tunes (h/v) 16.39/12.26
Synchrotron tune 0.071 0.051
Natural chromaticity (h/v) -19.0/-22.9
Norm. equilib. Hor. Emittance [mm mrad] 54
Damping times (h/v/l) [ms] 2.7/2.7/1.3
Mom. compaction factor [10-3] 3.72
Energy loss per turn [MeV] 2.75
Harmonic Number 2596 1298
RF Frequency [GHz] 2 1
RF Voltage [MV] 10
RF acceptance [%] 1.2 1.7
Equil. energy spread (rms) [%] 0.1
Equil. bunch length (rms) [mm] 3.2 4.6
Number of wigglers 36
Wiggler peak field [T] 1.9
Wiggler length [m] 3
Wiggler period [cm] 30

Lattice files

Current lattice: PDR-ACE-1GHz.seq

Damping Rings parameters

Parameter [Unit] Value (2GHz) Value (1GHz)
Energy [GeV] 2.86
Circunference [m] 427.5
Number of trains 1 2
Bunches per train 312 156
Bunch spacing [ns] 0.5 1
Bunch population [109] 4.07
Basic cell type TME
Number of dipoles 100
Dipole field [T] 1.0
Transverse tunes (h/v) 48.38/10.39
Synchrotron tune 0.0065 0.0057
Natural chromaticity (h/v) -115/-85
Norm. H/V Emittance (including IBS) [nm.rad] 472/4.8 456/4.8
Damping times (h/v/l) [ms] 2.0/2.0/1.0
Mom. compaction factor [10-4] 1.3
Energy loss per turn [MeV] 3.98
Harmonic Number 2851 1425
RF Frequency [GHz] 2 1
RF Voltage [MV] 4.5 5.1
RF acceptance [%] 1.0 2.4
RMS energy spread (including IBS) [%] 0.1
RMS bunch length (including IBS) [mm] 1.6 1.8
Number of wigglers 52
Wiggler peak field [T] 2.5
Wiggler length [m] 2
Wiggler period [cm] 5

Lattice files

Current lattice: DR_CDR_1GHz.seq

Magnet Lists

MagnetLists.xls: Magnet lists for DR and PDR

Software tools

The lattice design tool used is MadX, available from MadX produces as 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.

People and their main interests

  • Y. Papaphilippou, CERN, Design coordination, lattice, non-linear dynamics
  • G. Rumolo, CERN, Collective effects
  • H. Schmickler, CERN, CLIC Technical systems activity leader
  • D. Schulte, CERN, CLIC Beam dynamics activity leader
  • A. Grudiev, CERN, RF design
  • F. Antoniou, CERN and NTUA, Pre-damping ring design, lattice design, Intrabeam Scattering
  • E. Koukovini-Platia, CERN and EPFL, Impedance budgets, instability simulations
  • Y. Renier, Non-linear dynamics
  • A. Vivoli, CERN, Intrabeam Scattering simulations
  • P. Zisopoulos, CERN and UoA, Delay loop design
  • E. Levichev, BINP, Lattice design, space charge
  • D. Shatilov, BINP, Lattice design, space charge
  • S. Siniatkin, BINP, Lattice design, space charge
  • S. Piminov, BINP, Lattice design, space charge
  • D. Schoerling, CERN and TUBF, Wiggler design
  • A. Bernhard, KIT, Wiggler design
  • A. Bragin,BINP, Wiggler design
  • M. Karppinen, CERN, Wiggler design
  • R. Maccaferri,CERN (retired), Wiggler design
  • P. Peiffer, KIT, Wiggler design 3
  • R. Rossmanith, KIT (retired), Wiggler design
  • S. Russenschuck, CERN, Wiggler design
  • P. Vobly, BINP, Magnet and wiggler design
  • K. Zolotarev, BINP, Wiggler design, absorption systems
  • M. Modena, CERN, Magnet design
  • A. Perin, CERN, Cryogenics
  • M. Barnes, CERN, Kicker systems
  • S. Calatroni, CERN, Chamber coatings
  • P. Chiggiatto, CERN, Vacuum technology, coatings
  • T. Lefevre, CERN, Beam instrumentation
  • G. Vandoni, CERN, Vacuum
  • F. Zimmermann, CERN, Coherent Synchrotron Radiation
  • K. Wooton, ACAS, Low emittance tuning
  • B. Godard, CERN, Beam transfer systems
  • F. Toral, CIEMAT, Kicker design
  • M. Palmer, Cornell, CESRTA experiments
  • A. Faus-Golfe, IFIC-Valencia, Kicker design
  • A. Anderson, Maxlab, Emittance monitor
  • M. Boege, PSI, SLS experiments, (TIARA-SVET)
  • A. Streun, PSI, SLS experiments, (TIARA-SVET)

References and usefull links

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf CLIC_PDR_Overview.pdf r1 manage 1251.5 K 2011-04-27 - 14:54 FanouriaAntoniou CLIC Pre-damping Rings Overview, F. Antoniou
Unknown file formatseq DR_CDR_1GHz.seq r2 r1 manage 132.5 K 2013-01-29 - 10:55 FanouriaAntoniou DR lattice for the 1GHz option (CDR version)
Microsoft Excel Spreadsheetxls MagnetLists.xls r1 manage 17.0 K 2011-04-27 - 15:11 FanouriaAntoniou Magnet lists for DR and PDR
PDFpdf P.Zisopoulos-16052012.pdf r1 manage 1719.2 K 2012-05-30 - 08:57 FanouriaAntoniou Isochronicity conditions for the CLIC DR Delay Ring, P. Zisopoulos
Unknown file formatseq PDR-ACE-1GHz.seq r1 manage 34.3 K 2011-04-27 - 15:06 FanouriaAntoniou  
Edit | Attach | Watch | Print version | History: r13 < r12 < r11 < r10 < r9 | Backlinks | Raw View | WYSIWYG | More topic actions
Topic revision: r13 - 2013-06-17 - FanouriaAntoniou
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    CLIC All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2021 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
or Ideas, requests, problems regarding TWiki? use Discourse or Send feedback