JLC Beam Delivery System

2. Beam Delivery System

• Overview plan
• Detailed plan
• Optics
• SAD files;
  • Explanations: files and disp,type-files
    • effh1.1_disp: collimation and final focus system
    • effh1.1_type: definitions of magnets etc.
    • effh1.1_disp_g: geometries of the BDS
• apertures of collimation etc.
• muon attenuators
• Dumpline
  • optics
  • plan up to 2nd focus point
  • layout up to beam dump

Previous Studies

• 2002 - NLC
  • collimation and final focus system and definitions of magnets etc. , where total length of this BDS is about 1434m and its net angle is about 1 mrad.
• 2001 - NLC
  • e- : collimation system(disp) and definitions of magnets etc.(type)
  • e- : transport line and definitions of magnets etc.
  • e- : final focus system and definitions of magnets etc.
  • e+ : collimation system and definitions of magnets etc.
  • e+ : transport line and definitions of magnets etc.
  • e+ : final focus system and definitions of magnets etc.
• Layout
  • Temporary; Road Map report, 2002, jpg
  • JLC Design Study, 1997, jpg
  • with background sources; JLC Design Study, 1997, jpg
  • Reference(LC02, SLAC, 2002): NLC, jpg, and TESLA, jpg
• Collimation System
  • JLC Design Study, 1997, jpg
• Final Focus System
  • JLC Design Study, 1997
    • QC1, jpg
    • QC2, jpg
  • New Optics, 2001
    • List of Magnets for L* = 4.3m, html
    • List of Magnets for L* = 4.3m in details, html
    • Cross section of Superconducting QC1, jpg
    • Particle trajectories in S-QC1, jpg
    • Cross section of QC2, jpg, and large size
• Extraction Line (Dump Line)
  • L*=4.3m
    • Tentative Design from IP to the Beam Dump (water tank of 1.6m diameter, 10m length) dated on 2003.4.14
      • Report by K.Kubo,PDF (9 pages, 40KB)
        • report in html
        • Optics:SAD-file, SAD-definition, JPG figures: Geometry ( x and y), Optics
        • Tracking Results; figures at the dump: x, y, energy, energy vs x and y , x vs y, and energy density
    • dump line up to the second focussing point
      • report,pdf
      • Optics of the dump line, and expanded, jpg
      • Energy Measurement by Vertical(y) Dispersion: scatter plot in x-y plane, jpg, projection in y plane
      • List of Magnets, html
      • Distributions of Disrupted Beam with Superconducting QC1, html
  • L*=2m
    • Optics of the dump line, jpg
    • Energy Measurement by Vertical(y) Dispersion: scatter plot in x-y plane, jpg, projection in y plane
    • List of Magnets, html
    • Distributions of Disrupted Beam with Superconducting QC1, html
    • Energy Distribution of Disrupted Beam, jpg
    • Trajectories with Superconducting QC1, jpg
    • Trajectories with Conventional QC1, jpg

3.1) Layout

• Detector Structure (Roadmap 2003): side view and cross section
• Detectors of JLC, NLC and TESLA, jpg�@, and Requirements of JLC Detector, jpg
• IR- (a) and (b), 1997, jpg
• IR-(c) and (d), 2000, B=3Tesla, gif
• Beam pipe design and instrumentation at IR

3.2) Background Estimation

• Muons
  • ISG3, 1999, jpg
  • Muon Attenuator, jpg, and Muon Spoiler, jpg
  • Estimation of Beam Halo, 2000, jpg
  • Impact of Small Beam Halo, gif
• Synchrotron Radiations
  • Envelop along the beam line, jpg
  • Profile at QC1, 2000, jpg
  • Profile at QC2, 2000, jpg
• Pairs and Neutrons
  • JIM simulation by GEANT3. jpg
  • Summary-1 with the layouts of (a) and (b), jpg
  • Summary-2 with the layouts of (a) ,(b),(c) and (d), jpg
  • Neutron background with layout-(a), lc99, jpg

• Collimation, Final Focus System,jpg
• Solenoid, FF=Q support, feedback, background,jpg
• Pair and neutron backgrounds,jpg
• Instrumentation,jpg

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