LHC Lumi Days

Europe/Zurich
503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber

CERN

162
Show room on map
Helmut Burkhardt (CERN), Massimiliano Ferro-Luzzi (CERN), Michelangelo Mangano (CERN)
Description

The aim of this workshop will be to review the results of the first luminosity calibration measurements at the LHC and to stimulate a discussion on future measurements. A total accuracy of around 5% seems achievable with the current instrumentation, on relatively short term. The need for and the challenges associated with a more precise determination will be debated. The importance of knowing the cross section scale to a given precision will be reviewed. Direct luminosity calibration methods will be compared to indirect methods, including recent experience at other  cyclical colliders. Physics motivations, systematic uncertainties, proposals for optimal running conditions for future luminosity calibration experiments, etc., will be openly discussed.

A list of useful references and documents of relevance for the workshop can be found here

To subscribe to the workshop mailing list, go to

https://simba3.web.cern.ch/simba3/SelfSubscription.aspx

and request to join the mailing list lhc-lumi-days@cern.ch

Information on accommodation, access to CERN and laptop registration is available from http://lpcc.web.cern.ch/LPCC/index.php?page=visit

Scientific Secretary: Alick Macpherson

Notes for Contributions
==================
A Proceedings will be produced and so all speakers are asked to provide a writeup of their talk. As such, we ask all speakers to take note of the following constraints

  • Speakers should write-up their contributions (1 paper per talk, no page limit but recommended length approx. 5 pages) by using the JACoW templates.
  • All papers (format ps and word or LATeX with images,  plus a pdf file of the paper) are to be uploaded directly inthe indico timetable by 1st of March at the latest.
     

  • The final proceedings will be made available via the web but possible also as a printed report in black and white. Therefore it is recommended to avoid color codes!

     

Participants
  • Adam Paul Hunt
  • Albert De Roeck
  • Alessandro Ratti
  • Alick Macpherson
  • Allen Caldwell
  • Andreas Morsch
  • Andrej Gorisek
  • Andrius Juodagalvis
  • Andrzej Zuranski
  • Antonello Di Mauro
  • Antonio Zoccoli
  • Arfaoui Samir
  • Bolek Pietrzyk
  • Bostjan Macek
  • Carolina Gabaldon Ruiz
  • Colin Barschel
  • Daniel Marlow
  • Daniela Macina
  • David Berge
  • David d'Enterria
  • David Peter Stickland
  • Eric Feng
  • Eric Torrence
  • Fabiola Gianotti
  • Federico Alessio
  • Fulvio Piccinini
  • Gabriel Anders
  • Giacinto De Cataldo
  • Hans Dijkstra
  • Heinemann Beate
  • Helmut Burkhardt
  • Jaap Panman
  • James Pinfold
  • Jamie Boyd
  • Jean-Jacques GRAS
  • Jeremy Werner
  • John Jowett
  • Jonathan Anderson
  • Jorg Wenninger
  • Krzysztof Piotrzkowski
  • Lyn Evans
  • Marco Zanetti
  • Maria Chamizo Llatas
  • MARIO DEILE
  • Marjorie Shapiro
  • Mark James Tibbetts
  • Martin Aleksa
  • Martino Gagliardi
  • Massimiliano Ferro-Luzzi
  • Massimo Giovannozzi
  • Massimo Placidi
  • Matthieu Heller
  • Michael Albrow
  • Michael Dittmar
  • Michael Ludwig
  • Michelangelo Mangano
  • Mieczyslaw Witold Krasny
  • Mika Huhtinen
  • Mike Lamont
  • Nitesh Soni
  • Onel Yasar
  • Paolo Gandini
  • Paolo Martinengo
  • Patrick Michel Puzo
  • Paul Collier
  • Paul Kuijer
  • Pauline Bernat
  • Per Grafstrom
  • Peter Kvasnicka
  • Plamen Hristov Hopchev
  • Rainer Bartoldus
  • Resham Sarkar
  • Rhodri Jones
  • Richard Jacobsson
  • Rossano Giachino
  • Ryoichi Miyamoto
  • Samvel Khalatyan
  • Siegfried Wenig
  • Simon Mathieu White
  • Sophie Cavalier
  • Stefan Maettig
  • Stefano Redaelli
  • Stephen Schnetzer
  • Thilo Pauly
  • Tiziano Camporesi
  • Vaia Papadimitriou
  • Valeri Khoze
  • Valerie Halyo
  • Vincent Hedberg
  • Vladislav Balagura
  • Werner Herr
  • Witold Kozanecki
  • Yngve Inntjore Levinsen
  • Thursday, 13 January
    • Physics aspects 503/1-001 - Council Chamber

      503/1-001 - Council Chamber

      CERN

      162
      Show room on map
      • What precision should the experiments aim at?
      • What is the benefit for physics?
      • Relevance of lum measurements at different energies
      • Comparison between the reach of direct and indirect lum determinations
      Convener: Michelangelo Mangano (CERN)
      • 1
        Welcome and introduction
        Speaker: Massimiliano Ferro-Luzzi (CERN)
      • 2
        Motivations and precision targets for luminosity
        Speaker: Michelangelo Mangano (CERN)
        Paper
        Slides
      • 3
        Indirect luminosity measurements: theoretical assessment
        Speaker: Valery Khoze (Science Laboratories)
        Slides
      • 4
        TOTEM: prospects for total cross section measurements
        Speaker: Dr MARIO DEILE (CERN, PH-TOT)
        Paper
        Slides
      • 5
        LHCb: indirect luminosity measurement
        Speaker: Jonathan Anderson (Universitaet Zuerich)
        Paper
        Slides
      • 10:55
        Coffee break
      • 6
        Status and prospects of ALFA
        Speaker: Karlheinz Hiller (Deutsches Elektronen Synchrotron (DESY)-Unknown-Unknown)
      • 7
        ATLAS: W and Z boson cross sections and prospects for other precision cross section measurements
        Speaker: Matthias Schott (CERN)
      • 8
        CMS: W and Z boson cross sections and prospects for other precision cross section measurements
        Speakers: Jeremy Werner (Princeton University), Jeremy Werner (Princeton University)
        Paper
        Slides
      • 9
        CMS forward detectors for indirect luminosity measurements
        Speakers: Stephen Schnetzer (CERN), Steve Schnetzer (Rutgers University)
        Paper
        Slides
    • 13:00
      Lunch Break
    • First results of direct luminosity calibration and future prospects 503/1-001 - Council Chamber

      503/1-001 - Council Chamber

      CERN

      162
      Show room on map
      • review results of 2009-2010 luminosity calibration experiments
      • comparison to machine parameters (b*, emittances, ...)
      • ATLAS/CMS cross comparison
      • review systematic uncertainties: current list and future prospects
      • propose optimal conditions for future luminosity calibration experiments
      • requirements for a possible intermediate b* run in 2011?
      Convener: Massimiliano Ferro-Luzzi (CERN)
      • 10
        BCTs and BPTX analysis results
        Speaker: Thilo Pauly (CERN)
        Paper
        Slides
      • 11
        ALICE 2010 luminosity determination
        Speaker: Dr Ken Oyama (University of Heidelberg)
        Paper
        Slides
      • 12
        LHCb 2010 luminosity determination
        Speaker: Vladislav Balagura (ITEP Institute for Theoretical and Experimental Physics (ITEP)-U)
      • 13
        LHCb beam-gas imaging results
        Speaker: Plamen Hristov Hopchev (LAPP-Laboratoire d'Annecy-le-Vieux de Physique des Particules (L)
      • 16:00
        Coffee/tea break
      • 14
        CMS 2010 luminosity determination
        Speaker: Marco Zanetti (MIT)
        Paper
        Slides
      • 15
        ATLAS 2010 luminosity determination
        Speaker: Mika Huhtinen (CERN)
        Paper
        Slides
      • 16
        ATLAS/CMS comparison
        Speaker: Dr Beate Heinemann (LBNL and UC Berkeley)
        Paper
        Slides
  • Friday, 14 January
    • Instrumentation and machine aspects related to luminosity calibration 503/1-001 - Council Chamber

      503/1-001 - Council Chamber

      CERN

      162
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      • overview/expectations of machine/beam properties
      • review state-of-the art and/or novel technologies for beam current normalisation (for LHC-like beams), including experience from other hadron colliders
      • review methods/possibilites to determine the beam current fraction that does not contribute to luminosity (for LHC-like beams)
      • review intermediate b* options for 2011
      Convener: Dr Helmut Burkhardt (CERN)
      • 17
        Luminosity determination at the TEVATRON
        Covering the instrumentation and machine aspects related to luminosity calibration 20' + 5' discussion
        Speaker: Vaia Papadimitriou
        Paper
        Slides
      • 18
        Experience at CERN with luminosity monitoring and calibration, SpbparS, LEP...
        20' + 5' discussion
        Speaker: Rüdiger Schmidt
        Paper
        Slides
      • 19
        Instrumentation1 : Beam current transformer
        20' + 5' discussion
        Speaker: Jean-Jacques Gras
        Paper
        Slides
      • 10:15
        Coffee Break
      • 20
        Instrumentation2: Other instruments, ghost/satellite bunch monitoring, halo, emittance, new developments ...
        20' + 5' discussion
        Speaker: Mr Enrico Bravin (CERN AB-BI)
        Paper
        Slides
      • 21
        IP positions and angles, knowledge and correction
        20' + 5' discussion
        Speaker: Jörg Wenninger
        Slides
      • 22
        High-beta optics
        Strategy to commission the intermediate 90m optics, running scenario, required knowledge of beam-parameters 20' + 5' discussion
        Speaker: Helmut Burkhardt
        Paper
        Slides
      • 23
        Luminosity scans at LHC
        Including machine view on how to perform scans, minimize systematics and future prospects, also covering shortly RHIC 20' + 5' discussion
        Speaker: Simon White
        Paper
        Slides
    • 12:30
      Lunch break
    • Summary and Discussion 503/1-001 - Council Chamber

      503/1-001 - Council Chamber

      CERN

      162
      Show room on map

      Discussion of the next steps forward, goals, needed resources.

      • 24
        Status summary and wishes from the experiments / Discussion
        Speaker: Jaap Panman (CERN)
        Paper
        Slides
      • 25
        Summary as viewed from the machine / Discussion
        Speaker: Paul Collier (CERN)
        Paper