Numerical Calculation of Small-Angle Collimator Wakefields for Short Bunches
- SLAC
Collimators are used to eliminate halo particles from the beam. To relax the wakefield effects a gradual transition from a large to a small aperture is used. However, the existing computer codes face severe problems for long tapered transitions. Two main sources of the problems are the grid dispersion and the staircase geometry approximation. Using recently developed time domain numerical approach, which is able to model curved boundaries and does not suffer from dispersion in longitudinal direction, we calculate the short-range geometric wakefields of the TESLA and NLC collimators. Wake fields and corresponding integral parameters are given for bunches of different length. The numerical results are compared to measurements and to analytical estimations. The applicability range for the analytical formulas is highlighted.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 813256
- Report Number(s):
- SLAC-PUB-9985
- Country of Publication:
- United States
- Language:
- English
Similar Records
Numerical Calculations of Short-Range Wakefields of Collimators
Transverse Wakefields from Tapered Collimators: Measurements and Analysis
Calculation of the Short-Range Longitudinal Wakefields in the NLC Linac
Technical Report
·
Thu Dec 06 23:00:00 EST 2001
·
OSTI ID:798935
Transverse Wakefields from Tapered Collimators: Measurements and Analysis
Technical Report
·
Fri Jul 27 00:00:00 EDT 2001
·
OSTI ID:787211
Calculation of the Short-Range Longitudinal Wakefields in the NLC Linac
Technical Report
·
Sun Nov 29 23:00:00 EST 1998
·
OSTI ID:6431678