R. FERDINAND, R. DUPERRIER, N PICHOFF, J-M. LAGNIEL, (CEA-Saclay)
A CW high power linear accelerator can work only with very low particles losses and structure activation. At low energy, the RFQ is a very sensitive element to losses. To design the RFQ, a good understanding of the dynamics is request. Generally, the reference code PARMTEQM is enough to design the accelerator. TOUTATIS has been written with goals of cross-check the results and obtain a more reliable beam dynamics. This paper relate the different numerical methods used in the code. It is time-based, used multigrids methods and adaptive mesh for a fine description of the forces without being time consuming. The field is accurately calculated through a poison solver and the vanes are fully describe, allowing to properly simulate the coupling gaps and RFQs extremities. Differences with PARMTEQM and LIDO.RFQ are showed.
Comments or Questions to
linac2000@slac.stanford.edu