Chamonix 2011 LHC Performance Workshop

Session

Session 09 LHC Injectors Upgrade (LIU)

28 Jan 2011, 11:15

Chamonix

Conveners

Session 09 LHC Injectors Upgrade (LIU)

• Roland Garoby (Chair)
• Malika Meddahi (Scientific Secretary)

Presentation materials

paper

LIU_session9_v2.docx

LIU_session9_v2.pdf

21. Performance reach of the injectors in 2011

Rende Steerenberg (CERN)

28/01/2011, 11:15

The characteristics of the various LHC beams have been defined long before the LHC became operational. After a year of successful LHC running with the different types of LHC beams much experience has been gained in the LHC, but also in the injectors. This talk will summarise the defined and presently obtained beam characteristics of the LHC beams in the injector chain together with a brief...

22. Possibility of a higher PSB to PS transfer energy

Dr Klaus Hanke (CERN)

28/01/2011, 11:45

Following the Chamonix 2010 workshop a task force has been set up to study the feasibility and the impact of an energy upgrade of the PS Booster from the present 1.4 GeV to about 2 GeV. The working group has confirmed the feasibility of such an upgrade, and analysed in detail the impact on the accelerator hardware along with a cost estimate and a tentative planning. The outcome of the task...

23. PS potential performance with a higher injection energy

Dr Simone Gilardoni (CERN)

28/01/2011, 12:15

In the context of the LHC Injectors’ upgrade project, the PS has to be brought up to- and to operate reliably at- the level of performance required by the HL-LHC until the end of the LHC lifetime. The study has started of the potential benefits of increasing the injection energy. An overview of the impact of this upgrade will be presented, with a preliminary estimate of the beam...

25. Electron Clouds in the SPS: progress in the analysis of cures/mitigations measures and potential schedule of implementation

Dr Jose Miguel Jimenez (CERN)

28/01/2011, 14:15

After a brief review of the studies (simulations and measurements) made so far, a set of priorities for new studies will be presented and justified. These proposals will include all studies related to coating techniques, clearing electrodes, active feedbacks, together with their related instrumentation. The feasibility, state-of-the-art, hard limits and opened questions, required...

24. Lessons from SPS studies in 2010

Elena Shaposhnikova

28/01/2011, 14:45

The experimental studies done in the SPS in 2010 were devoted both to a validation of some already proposed upgrades (such as chamber coating) and to uncovering new limitations by pushing up the injected bunch intensity. The first results obtained for higher than nominal intensity LHC beam with 25 ns and 50 ns bunch spacing, each beam available during only one MD session in the SPS, will be...

26. Alternative / complementary possibilities

Christian Carli (CERN)

28/01/2011, 15:15

Generation of higher brightness LHC bunch trains in the PS with RF gymnastics different from the present scheme has been studied. With Linac4 and exploiting the beam of all four PSB rings to fill most of the PS circumference allows bringing the PS close to the direct space charge limit with one injection. Batch compression after acceleration to an appropriate intermediate energy allows...