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AbstractAbstract
[en] Full text of publication follows. The HL-LHC upgrades require beam currents, that are significantly increased beyond the original specifications of the LHC. The talk will explore expected limitations in hardware systems (including RF power, instrumentation, vacuum), the impact of increased beam losses on quench statistics, risks due to beam current related damage, beam dynamics issues, loss-induced activation and single event upsets. (author)
Primary Subject
Source
Carli, C. (ed.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 403 p; ISBN 978-92-9083-378-9;
; ISSN 0007-8328;
; 2012; p. 359; Chamonix 2012: Workshop on LHC Performance; Chamonix (France); 6-10 Feb 2012; Available in abstract form only, full text entered in this record


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[en] This paper will concentrate on the studies carried out on LHC beam instrumentation systems during the 2011 run, the improvements made and the outlook for 2012. It will include an update on the issues resolved since 2010, such as the performance of the BCT systems, and discuss advances in the bunch by bunch measurement capability of many systems. The paper will also highlight what can be hoped for in terms of performance for 2012 and the issues which remain to be solved. (author)
Primary Subject
Source
Carli, C. (ed.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 403 p; ISBN 978-92-9083-378-9;
; ISSN 0007-8328;
; 2012; p. 124-128; Chamonix 2012: Workshop on LHC Performance; Chamonix (France); 6-10 Feb 2012; 7 refs.; Available at http://cds.cern.ch/record/1424362/files/CERN-2012-006.pdf and also from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/INIS/contacts/


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[en] The new machines HE-LHC and LHeC (whether or not linac-ring and ring-ring options will be favoured) rely on new RF systems. The talk will analyse the synergies or competitions between the Research-Development strategies. The first steps foreseen for 2012 will be highlighted. (author)
Primary Subject
Source
Carli, C. (ed.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 403 p; ISBN 978-92-9083-378-9;
; ISSN 0007-8328;
; 2012; p. 398-401; Chamonix 2012: Workshop on LHC Performance; Chamonix (France); 6-10 Feb 2012; 7 refs.; Available at http://cds.cern.ch/record/1424362/files/CERN-2012-006.pdf and also from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/INIS/contacts/


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AbstractAbstract
[en] The fourth session of the 2012 LHC Performance Workshop included the following topics: -) beam Energy (it was decided to step back in energy from 4 TeV to 3.5 TeV in case of excessive number of quenches), -) optics options, -) collimation settings and performance, -) performance reach in the LHC for 2012, -) MD plans in 2012, and -) Ions in 2012
Primary Subject
Source
Carli, C. (ed.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 403 p; ISBN 978-92-9083-378-9;
; ISSN 0007-8328;
; 2012; p. 26-28; Chamonix 2012: Workshop on LHC Performance; Chamonix (France); 6-10 Feb 2012; Available at http://cds.cern.ch/record/1424362/files/CERN-2012-006.pdf and also from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/INIS/contacts/


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[en] The experience from the past LHC proton run has provided plenty of information and can be used to define possible scenarios for the 2012 physics run. The key parameters such as β* and crossing angle will be reviewed assuming a 4 TeV beam energy and considering options for 25 ns and 50 ns. Possible scenarios for the high-beta optics configuration during the 2012 run will be presented. (author)
Primary Subject
Source
Carli, C. (ed.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 403 p; ISBN 978-92-9083-378-9;
; ISSN 0007-8328;
; 2012; p. 184-190; Chamonix 2012: Workshop on LHC Performance; Chamonix (France); 6-10 Feb 2012; 39 refs.; Available at http://cds.cern.ch/record/1424362/files/CERN-2012-006.pdf and also from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/INIS/contacts/


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[en] The LHC Beam Operation workshop 2011 took place in Evian (France) from 12. to 14. December. The principle aims of the workshop were to review 2011 LHC beam commissioning and beam operations experience, and to look forward to the operation of the LHC in 2012. Issues covered include: availability; injection; operational performance; beam loss and machine protection; system performance; limitations; and the outlook for 2012. (author)
Primary Subject
Source
Carli, C. (ed.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 403 p; ISBN 978-92-9083-378-9;
; ISSN 0007-8328;
; 2012; p. 62-67; Chamonix 2012: Workshop on LHC Performance; Chamonix (France); 6-10 Feb 2012; 16 refs.; Available at http://cds.cern.ch/record/1424362/files/CERN-2012-006.pdf and also from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/INIS/contacts/


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[en] Based on the 2011 experience and Machine Development study results, the performance reach of the LHC with 25 and 50 ns beams will be addressed for operation at 3.5 and 4 TeV. The possible scrubbing scenarios and potential intensity limitations resulting from vacuum, heating will be taken into account wherever possible. The paper mainly covers the performance of the two high luminosity regions in IR1 and IR5. (author)
Primary Subject
Source
Carli, C. (ed.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 403 p; ISBN 978-92-9083-378-9;
; ISSN 0007-8328;
; 2012; p. 197-206; Chamonix 2012: Workshop on LHC Performance; Chamonix (France); 6-10 Feb 2012; 15 refs.; Available at http://cds.cern.ch/record/1424362/files/CERN-2012-006.pdf and also from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/INIS/contacts/


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Bruce, R.; Assmann, R.W.; Burkart, F.; Cauchi, M.; Deboy, D.; Lari, L.; Redaelli, S; Rossi, A.; Salvachua, B.; Valentino, G.; Wollmann, D.
Proceedings of Chamonix 2012 workshop on LHC Performance2012
Proceedings of Chamonix 2012 workshop on LHC Performance2012
AbstractAbstract
[en] Collimator settings and performance are key parameters for deciding the reach in intensity and β* in order to conclude on possible limits for the 2012 run, a summary is first given of the relevant running experience in 2011 and the collimation-related MDs. These include among others tight collimator settings, a quench test, and aperture measurements. Based on the 2011 experience, we conclude on possible running scenarios for 2012 in terms of collimator settings, intensity and β* from the collimation point of view. (authors)
Primary Subject
Source
Carli, C. (ed.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 403 p; ISBN 978-92-9083-378-9;
; ISSN 0007-8328;
; 2012; p. 191-196; Chamonix 2012: Workshop on LHC Performance; Chamonix (France); 6-10 Feb 2012; 33 refs.; Available at http://cds.cern.ch/record/1424362/files/CERN-2012-006.pdf and also from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/INIS/contacts/


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Nunes, R.; Ninin, P.; Sanchez-Corral, E.; Ladzinski, T.
Proceedings of Chamonix 2012 workshop on LHC Performance2012
Proceedings of Chamonix 2012 workshop on LHC Performance2012
AbstractAbstract
[en] This paper reviews the main features of the new PS Personnel Protection System (PSPSS) as well as the main milestones for its deployment during the Long Shutdown of 2013-2014. Access conditions in the PS, SPS and LHC complexes during this period shall be described as well as the upgrades and improvements that are under preparation. (authors)
Primary Subject
Source
Carli, C. (ed.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 403 p; ISBN 978-92-9083-378-9;
; ISSN 0007-8328;
; 2012; p. 264-268; Chamonix 2012: Workshop on LHC Performance; Chamonix (France); 6-10 Feb 2012; 7 refs.; Available at http://cds.cern.ch/record/1424362/files/CERN-2012-006.pdf and also from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/INIS/contacts/


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AbstractAbstract
[en] This session was the first of the two sessions dealing with future projects and the associated studies. Starting with descriptions of the plans and needs of the LHCb and ALICE experiments which are less extensively documented than those of ATLAS and CMS, it addressed the plans for the High Luminosity LHC and for the upgrade of the injectors, both for protons and other ions. (authors)
Primary Subject
Source
Carli, C. (ed.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 403 p; ISBN 978-92-9083-378-9;
; ISSN 0007-8328;
; 2012; p. 39-42; Chamonix 2012: Workshop on LHC Performance; Chamonix (France); 6-10 Feb 2012; Available at http://cds.cern.ch/record/1424362/files/CERN-2012-006.pdf and also from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/INIS/contacts/


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