Conveners
Session 3 - Preparation of Restart in 2005-2006
- Roland (Chairman) Garoby (AB/RF)
- Rende (Scientific Secretary) Steerenberg (AB/OP)
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Dr Elias METRAL (CERN)14/01/2005, 09:00Preparation of Restart in 2005-2006The PS&SPS complex has to provide 4.5 10^19 protons on CNGS target per year. This number was initially based on the SPS intensity record obtained in 1997 (4.8 10^13 p/p at 400 GeV/c). During high-intensity tests in September 2004, a new intensity record has been established, exceeding by more than 10% the previous one, with reasonable losses. This talk reviews what was expected...Go to contribution page
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Elena Shaposhnikova (AB/RF CERN)14/01/2005, 09:20Preparation of Restart in 2005-2006The nominal proton intensity per CNGS pulse is 4.4x10^{13}. This number is only slightly below the intensity record achieved in the SPS in 1997 after careful tuning of all the accelerator complex. Since this time the PS and SPS machines have had major upgrades in preparation for the LHC beam. In September 2004 a total intensity of 5.3x10^{13} was accelerated to top energy in the...Go to contribution page
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Dr Massimo Giovannozzi (CERN)14/01/2005, 09:40Preparation of Restart in 2005-2006Since the year 2002 intense efforts were devoted to the experimental verification of the proposed multiturn extraction based on beam capture inside stable islands of transverse phase space. Such an extraction is aimed at reducing the losses of the present Continuous Transfer used for the fixed target physics programme at the SPS and in particular for the high-intensity beam for...Go to contribution page
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Dr Michael Benedikt (CERN)14/01/2005, 10:10Preparation of Restart in 2005-2006The “basic-period” is the underlying time unit for the operation of the accelerators in the sense that all machine cycles are integer multiples of that unit. The motivation for reducing the basic period from the present 1200 ms to 900 ms and the choice of this “optimum” length are explained. The impact on the operation of the accelerator complex is discussed and an overview of the...Go to contribution page
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Bertrand Frammery (CERN)14/01/2005, 10:50Preparation of Restart in 2005-2006From 2006 onwards, LHC studies, CNGS and other fixed target physics programs will compete for beam. Besides, the timing equipment currently driving the SPS cycling is not compatible with PS Complex and with the future LHC cycling flexibility. Multicycling the SPS is a solution for both problems (together with speeding up the basic cycling period to 0.9s) and a firm decision...Go to contribution page
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Mr Bruno Puccio (CERN)14/01/2005, 11:20Preparation of Restart in 2005-2006In the LHC and CNGS era, the beam energy of the SPS will be largely above damage limit. Comparing to the current SPS exploitation, fast extractions into several channels of higher intensity and brighter beams are very challenging. In order to optimize the operation efficiency, a “flexible” but reliable Interlock system operating in multi-cycling mode is required. Ideas for such system,...Go to contribution page
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Dr Thomas Otto (CERN SC-RP)14/01/2005, 11:40Preparation of Restart in 2005-2006The CNGS target will receive up to 4.5E19 protons in one year. To achieve this goal,approximately 1.3E19 protons will be lost in the PS, 50 % during acceleration and 50% during multiturn extraction. This contribution analyses the radiological consequences of the increased beam losses. It is focussed on two main issues: 1.) Radiation leaking through the weak points of the PS shielding...Go to contribution page
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Doris Forkel-Wirth (CERN-SC)14/01/2005, 11:55Preparation of Restart in 2005-2006From 2006 onwards the total number of protons per year accelerated by the SPS machine and provided to its fixed target program, CNGS and LHC will exceed by far all what has been achieved in the past. The consequences with respect to radiation protection issues will become serious. Additional thick shielding will be required in the caverns of SPS Point 4 and Point 5 if ECA4 and ECA5...Go to contribution page
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Mr Peter Sollander (CERN AB/OP)14/01/2005, 12:20Preparation of Restart in 2005-2006The operation of CERN's Technical Infrastructure will move from the TCR to the MCR on February 1st 2005. AB will take the responsibility for monitoring all technical services including electricity supply, cooling&ventilation, computers&networks and various access and safety systems, co-ordinating minor and major interventions of all equipment specialists and provide this service 365...Go to contribution page
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Dr Simon Baird (AB/OP)14/01/2005, 12:40Preparation of Restart in 2005-2006The restart of all accelerator operation in 2006 is foreseen to take place from the CERN Control Centre (CCC), currently being built adjacent to what used to be the PCR. The status of this project will be summarized, covering the building, the control room layout and the staff who will work there. The overall schedule will be presented, and some particular issues for the 2006...Go to contribution page