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LHC Performance Workshop - Chamonix 2009

2–6 Feb 2009
Chamonix
Europe/Zurich timezone
DISCLAIMER “The Chamonix workshop was an open exchange of views and opinions. All the presentations made at the workshop are available here. The views expressed in individual presentations do not necessarily represent those of the CERN management.”

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Session

Session 09 - What will we do with beam in 2009/10

S09
6 Feb 2009, 08:30
Le Majestic (Chamonix)

Le Majestic

Chamonix

Presentation materials

  1. 83. Experiments desiderata
    Massimiliano Ferro-Luzzi
    06/02/2009, 08:30
    In this talk, an attempt will be made to review the LHC experiments desiderata in the current LHC context. The impact on the physics program of the beam energy and integrated luminosity shall be reminded. In particular, the benefits and shortcomings will be presented of a 900 GeV run and of a pilot run at a yet to be defined higher energy. A few run scenari for 2009 (and 2010) will be sketched.
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  2. 72. Options and preferences for proton running
    Werner Herr
    06/02/2009, 09:00
    The choice of parameters for proton operation in the LHC in 2009 is subject to constraints from beam dynamics as well as the experiments desiderata. These constraints are reviewed and the preferred operational scenarios are presented together with possible strategies to increase the performance.
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  3. 69. Ions in the LHC
    John Jowett
    06/02/2009, 09:30
    The LHC should make a “hot switch” from colliding protons to colliding lead nuclei in order to maximize the physics yield in a limited running time. I shall describe how we plan to achieve this and review the pre-conditions including the readiness of the RF system and beam instrumentation. The initial run should have the beam structure foreseen in the “Early beam” parameter list but the...
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  4. 43. Readiness of and plans for the injectors for 2009
    Elias Metral
    06/02/2009, 10:30
    A large diversity of beams have been prepared in the LHC injectors in the past few years, such as single-bunch and multi-bunch beams, with 25 ns and 75 ns bunch spacings. In 2008 the efforts were mainly devoted to the revival of the multi-bunch beam with 50 ns bunch spacing, and the production of the different beams with intermediate intensities per bunch. The purpose of the present paper is...
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  5. 78. Are we ready for the 2009 beam operation?
    Stefano Redaelli
    06/02/2009, 11:00
    In preparation for the 2008 LHC beam operation, commissioning procedures were established by the commissioning team to safely bring up the LHC performance from the initial beam tests to the first 7 TeV physics runs with reduced intensity and intermediate beta* values. The status of the procedures and their usage during the 2008 beam experience is reviewed. The improvements needed for the 2009...
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  6. 79. Organization
    Gianluigi Arduini
    06/02/2009, 11:30
    The organization and the structure put in place for the machine check-out and for the beam commissioning have been instrumental for the rapid progress of the commissioning of the LHC Machine before the Sector 34 incident. After a review of the 2008 experience, the organization for the 2009 will be sketched with the expected commissioning steps and the roles of the different actors. The issue...
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