Minutes of the Booster Commissioning Working Group held on 14th of March 2011

Present: S. Damjanovic, A. Newborough, A. Lombardi, L. Hein, T. Hermanns, K. Hanke, C. Carli, I. Kozsar, M. Widorski, F. Regis and B. Mikulec.


  1. Communications
  2. Follow-up of open actions
  3. Update on LBS line upgrade plans (T. Hermanns)
  4. PSB Fluka simulations (S. Damjanovic)
  5. AOB

1. Communications

Nothing special.

2. Follow-up of open actions

The list of open actions has been discussed and a couple of actions closed. The action to study the feasibility of putting collimators in Linac4 has been closed, but discussions should continue to evaluate the need of upstream collimation to protect the PSB injection equipment.
Assigned to Start date Description State Result
Main.A.Lombardi 2011-03-28 Organise a discussion with W. Weterings to evaluate the damage potential of the new PSB injection equipment to halo particles from Linac4 to judge the necessity of upstream collimation.   edit

3. Update on LBS line upgrade plans

A summary of recent discussions on the LBS line upgrade has been given by T. Hermanns. In his slides he explained that the upgrade plans focused on 2 basic options: either to design a new spectrometer magnet (bending angle 54 deg.) as presented in previous meetings of the Booster Commissioning WG, or to use as proposed by A. Lombardi the same bending magnet that will be installed in the new Linac4 transfer line (bending angle 35 deg.). Both energy measurement layouts could be implemented either with a slit and a reduced-current dump or without slit, a full current dump and an additional transfer line-type quadrupole to provide suitable optics. The LBS line has to stay compatible with measurements of ions from Linac3.
Several discussions organised by C. Carli led to the conclusion that a resolution of 10% for the energy spread should be sufficiently precise to avoid problems at PSB injection. Therefore the option with a transfer line-type spectrometer magnet has been chosen as the cheaper one and as it avoids a new complex magnet design and reduces the number of required spare magnets by one.

The aim is now to complete all necessary information (for example slit feasibility study) and organise a sum-up meeting in the framework of the Linac4 BCC, where the decision should be taken on the final LBS line upgrade layout.

4. PSB Fluka simulations

A Fluka model of the PSB is under development by S. Damjanovic. The presentation of S. Damjanovic followed a first discussion round on 31st of January 2011, where she showed the first iteration of the model for one typical PSB section (see this link).

-- BettinaMikulec - 28-Mar-2011

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf 1103_PSBCommissioning_ThHermanns.pdf r1 manage 373.1 K 2011-03-28 - 11:13 BettinaMikulec Summary of discussions on the LBS line upgrade.
PDFpdf March14_BLM-Response-BR8-EnergyDependence.pdf r1 manage 3413.6 K 2011-03-28 - 11:14 BettinaMikulec BLM response to losses at the beamscope window (Fluka studies).
PDFpdf Presentation_PSBooster_Monday31January.pdf r1 manage 5814.6 K 2011-03-28 - 11:56 BettinaMikulec First PSB Fluka simulations of 1 PSB period.
Edit | Attach | Watch | Print version | History: r2 < r1 | Backlinks | Raw View | Raw edit | More topic actions...
Topic revision: r1 - 2011-03-28 - BettinaMikulec
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    SPL All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright