ESGARD NETWORK ACTIVITIES

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ESGARD NETWORK ACTIVITIES
Workshop on Advanced Accelerator
Magnets Archamps, F, 17-18 March 2003

• L. Rossi
• AT Division - CERN

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HEHIHB - 1

• Networking Activity N4
• Topic Coordination of studies towards a future
  High Energy High Intensity Hadron Beams after the
  LHC
• first remarks all studies devoted to field below
  10 T must be addressed in a contest of an
  injector chain for a HE accelerator
• second remark LHC means present LHC (may be some
  studies relevant to reach the ult. perf.)
• Coordinator Oliver Bruning (CERN, AB div)
• 5 years program

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HEHIHB - 2

• Establishing a road map towards a future high
  energy high intensity hadron collider
• 20-25 years from first conception of the LHC to
  colliding beams!
• Even for luminosity upgrade 10 years are needed
• design process is only possible if the technical
  limits are well understood. It is too early.

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HEHIHB -3 General scope

• Potential future hadron collider after the LHC
  with centre of mass collisions above 14 TeV
• Peak luminosity values above those of the LHC
  ultimate (goal 5 1034 ??)
• Experimental studies in existing machines to
  establish a roadmap for future RD and give
  directions
• Generate RD program to submit as JRP
• Favour international collaboration, including
  small laboratories and Universities
• Collect but also disseminate information
• Improve existing infrastructure

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HEHIHB -4 Advantage for EU

• ? Integrating laboratories on a European wide
  scale will provide a better exposure to the
  frontiers of high energy accelerator research and
  a more efficient use of the exiting
  infrastructures.
• ? Integrating laboratories on a European wide
  scale will provide improved techniques and
  competence for the operation of existing
  accelerator facilities.
• ? Integrating laboratories on a European wide
  scale provides a similar framework as it is
  currently set up by the US laboratories
• ? Integrating laboratories on a European wide
  scale will stimulate the exchange of knowledge
  and expertise between research laboratories and
  industry and thus provide a stimulating effect on
  the European industry.
• ? Identification of the most efficient solution
  for future high energy high intensity proton
  beams.

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HEHIHB - 5 Management structure

• Co-ordinator  O. Bruning (CERN) ?
• Deputy co-ordinator ?Work-package
  co-ordinators 
• L. Rossi (CERN)
• H. Reich (GSI)
• H. Schmickler (CERN)
• F. Willeke (DESY)
• E. Tsesmelis (CERN)

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HEHIHB - 6 Work package

• Advancemetns in accelerator magnet technologies.
  Abbreviation AMT Chaired by Lucio Rossi (CERN)
  Deputy Luca Bottura (CERN)
• Advancements in Vacuum Technology. Abbreviation
  AVT Chaired by Hartmut Reich (GSI) Deputy Noel
  Hilleret (CERN)
• Novel Methods for Accelerator Beam
  Instrumentation. Abbreviation ABT Chaired by
  Hermann Schmickler (CERN) Deputy ???
• Accelerator Physics and Synchrotron Design.
  Abbreviation APD Chaired by Ferdinand Willeke
  (DESY) Deputy Francesco Ruggiero (CERN)
• Machine Experimental Interface. Abbreviation MEI
  Chaired by Emmanuel Tsesmelis (CERN) Deputy ???

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AMT1 Stability and Quench Limit of LHC-ultimate
and LHC-upgrade

• Studies of stability and quench limits for super
  conducting magnets. For given cleaning efficiency
  the LHC should operate at the quench limit of the
  super conducting magnets. A thorough
  understanding of these quench limits will be
  important for pushing LHC performance to its
  present ultimate limit and to assess the
  possibility of a further upgrade. Theoretical
  studies should be complemented by experimental
  tests, as far as possible.
• A comparison of the various approach to quench
  and stability studies and a list of the various
  codes available in different laboratories will
  help to understand where are the area already
  covered and the areas where an effort of research
  is to be addressed. Eventually, by favoring the
  integration of various quench codes.

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AMT2 Magnets for an SPS upgrade

• The following activities investigate the
  possibility to increase the LHC injection energy
  by introducing a fast cycling super conducting
  booster ring in the SPS tunnel(3 to 5 tesla ? 10
  s cycle ?) Minimum 2xSPS
• a. Magnet specifications for low cost fast
  cycling super conducting dipole magnets that fit
  into the SPS tunnel together with the existing
  SPS machine (minimum required cross section,
  dimensions, peak field and field quality).
• b. Specification of the minimum required
  cryogenics for such a super conducting booster
  ring
• c. Analysis of the required transfer line upgrades

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AMT3 - Magnets for a booster ring in the LHC
tunnel

• The following activities investigate the
  possibility to increase the LHC injection energy
  by introducing a slow cycling compact,
  inexpensive, low field super conducting ring in
  the LHC tunnel. This LFR serves as booster of the
  present SPS to increase of a factor 3 to 4 the
  injection in a SuperLHC.

• a. Specification of a magnet design for a low
  cost ring based on fast cycling super conducting
  dipole magnets that fit into the LHC tunnel
  together with an high field ring (minimum
  required cross section, dimensions, peak field
  and field quality)
• b. Specification of the minimum required
  cryogenics for such a super conducting booster
  ring, by best use of possible 20 K cryogenic
  surplus (MgB2 ??)

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AMT4 High Field Magnet Design
15 T Bop is the goal !! (for LHC tunnel)

• To go beyond the present LHC magnets with high
  performance conductors (A15 or eventually others)
  and special magnet design are required to reach
  the technical goal. So main area of development
  and of theory and data comparison are
• a. cable design with high current and current
  density, large temperature margin, acceptable
  magnetization
• b. coil geometry and stress analysis of high
  field magnets in different configurations
  comparison among different computing codes.
• c. optimization of the coil aperture for coil
  construction and global system costs

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AMT5 - Optimisation of the overall cost of the
magnet system for a high energy hadron collider

• The various parameters can be cost-optimized
  according to two hypothesis i) fixed ring
  (existing LEP-LHC tunnel) ii) new tunnel of
  free radius and the following points are to
  weighted
• a. required cryogenics
• b. required tunnel diameter and dimensions
• c. required service infrastructure

My goal 5 k/d.Tm TOTAL
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AMT6 - Handling of synchrotron radiation in a
superconducting environment

• The increased load from radiation may become the
  actual limiting factor for future hadron
  colliders making use of magnets at very low
  temperatures. Put together the world-wide
  experience and try to compare various solutions
  and new designs is essential to face this complex
  factor.
• a. special magnet designs
• b. masks and absorber integration in the magnet
  design
• c. possible cooling options

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N4-AMT deliverables

• The proceedings of each workshop, published in
  electronic form with the system of the peer
  review. In particular, the last one should give
  solid indication for the possibility of a 12-15
  TeV/beam proton collider in the LHC tunnel. The
  student/stagist is to work on the topic of the
  workshop of the year, to collect documentation
  and compare different hypothesis. He/She will
  also act as scientific secretary of the workshop.
• An annual report (the last year will be also the
  final report) indicating the progress of the
  integration activity among various laboratories
  and asddressing each single work package and a
  global assessment of the progress toward HE-HI
  hadron collider beyond LHC present energy. The
  report must reflect the line given at the annual
  general meeting.
• An initial ORACLE data base site, accessible via
  Web, with some instruments for basic analysis.
  The idea is create a system to point to
  collection of data already present in single
  laboratory adding a suffcient description to
  render data usable with perennity.

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Link persons
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Activities and people
1 stagist per year (5 months) 1 fellow for the
data base 2 years
Target 450 k for 5 years, 53 people involved