ILC Extraction Line for 14 mrad Crossing Angle

Conference · Thu Dec 08 04:00:00 EST 2005

OSTI ID:877517

Nosochkov, Y; Markiewicz, T; Maruyama, T; Seryi, A; Parker, B

The earlier studies of the ILC extraction line for 20 mrad and 2 mrad crossing angle options [1]-[5] showed that the 20 mrad design has an advantage of a simpler beamline and lower extraction beam loss because of the independent incoming and extraction optics. However, the large 20 mrad crossing angle requires the use of a crab cavity correction, increases synchrotron radiation emittance growth in the solenoid, and increases photon backscattering from the forward calorimeter of the detector. To reduce these effects, an attempt has been made to minimize the crossing angle while keeping the extraction and incoming lines separate. A new quadrupole scheme near the interaction point has been proposed which allows a reduction of the crossing angle to 14 mrad [6]. The optics design and results of tracking and background simulations for the 14 mrad extraction line are presented.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 877517
• Report Number(s): SLAC-PUB-11591
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
Accelerators
ACCPHY
BACKSCATTERING
BEAM DYNAMICS
CALORIMETERS
DESIGN
OPTICS
PHOTONS
QUADRUPOLES
SYNCHROTRON RADIATION