In heavy ion accelerators the beam line vacuum is effected by lost ions impinging on the beam pipe. Due to ion induced desorption gas is released from the walls into the vacuum. This vacuum degeneration effects the ion beam life time and is a serious luminosity limitation for a heavy ion synchrotron like SIS18. Here we report on a new approach to understand the physics of the ion induced desorp...

Designing optimized ECR ion beam sources can be streamlined by the accurate simulation of beam optical properties in order to predict ion extraction behavior. The complexity of these models, however, can make PICbased simulations time-consuming. In this paper, we first describe a simple kinetic plasma finite element simulation of extraction of a proton beam from a permanent magnet hexapole elec...

Low secondary ion yields from organic and biological molecules are the principal limitation on the future exploitation of time of flight-secondary ion mass spectrometry (TOF-SIMS) as a surface and materials analysis technique. On the basis of the hypothesis that increasing the density of water related fragments in the ion impact zone would enhance proton mediated reactions, a prototype water cl...

An ion-optical based fast adaptation of ion beam range for the treatment of moving targets with beam tracking was investigated. The method employs a deflection of the ion beam on a small single wedge-degrader positioned between two bending magnets for range adaptation [1, 2]. A prototype system was implemented at the therapy beam line at GSI and beam parameters of energy-adapted beams were char...

Simplified beam line for low energy Ion implantation is considered. Compensation of the space charge of high perveance, low energy ion beam in beam lines for ion implantation and isotope separation has been investigated. Different mechanisms of the compensating particle formation such as ionization by the beam, secondary emission of electrons and negative ions, electronegative gas admixture, an...

We have studied fast ion instability (FII) in the electron ring (HER) at KEKB. We introduce an application of Singular Value Decomposition (SVD) to study multi-bunch beam oscillations. The SVD analysis[1] has been performed for a matrix consists of vertical bunch positions in a turn-byturn and bunch-by-bunch to extract wave lengths which characterized the behavior of multi-bunch beam instabilit...