Research Interests of Ralph W. Aßmann

General research interests:

Accelerator and beam physics:

•     Dynamics of accelerated and stored particle beams.
•     Operation and optimization of large and complex accelerators.
•     Limitations in performance and possible improvements.
•     Possibilities for the next generation of high energy accelerators.

Particle physics:

•     Electro-weak measurements and tests.

Specific research interests:

• High current beam instabilities in the SLAC asymmetric B-factory (PEP-II).
• The effects of imperfections on the accelerator performance and their correction with innovative optimization algorithms (Deterministic Harmonic Spin Matching for LEP, Dispersion-Free Steering for SLC).
• Advanced methods to measure relevant beam and accelerator parameters (energy calibration in LEP, diagnostic pulse in SLC, long-range wakefields in SLC, dipole mode measurements in SLC, stretched wire system in the FFTB).
• Theory and simulation of single- and multi-particle beam dynamics in e+e- accelerators in order to understand the accelerator performance and to predict the future performance (LIAR project).
• Design work on the operation and expected performance of the NLC main linacs.
• Plasma wakefield acceleration as a possible new acceleration method for future linear colliders (principal investigator for SLAC experiment E-157).
• Precision measurements at the Z resonance.

Last updated: September 15, 1997