Acceleration of U-beams in the SIS18
نویسندگان
چکیده
Introduction To prepare the acceleration of highest intensities of intermediate charge state heavy ion beams for the FAIR project, several technical projects have been summarized in the SIS18 upgrade program. The various technical measures of this program are continuously accompanied and verified by machine experiments. Major goal is the reduction of ionization beam loss. The strong dependence of the ionization beam loss on initial systematic loss has been proven. The accelerated number of ions could be increased by reducing the initial system beam loss.
منابع مشابه
High Intensity Uranium Operation in Sis18
In order to follow the requirements of the ongoing experimental program at GSI and later on of the planned operation as a booster for the Facility for Antiproton and Ion Research FAIR, the intensity of uranium beams in SIS18 must be enhanced significantly. The goals are to increase the number of particles per cycle up to the space charge limit and to enhance the average intensity by an increase...
متن کاملIonization Beam Loss and Collimation in SIS18
Introduction Ionization of beam ions, especially at operation with intermediate charge states, combined with a strongly dynamic residual gas pressure may create major beam loss. The first experimental evidence has been obtained in SIS18 machine experiments in 2001 with U-ion beams. Operation with intermediate charge states is in general required to minimize the incoherent space charge tune shif...
متن کاملSIS100/300 Conceptual Design Studies
The main accelerator system of the proposed research facility FAIR is the two stage synchrotron complex SIS100/300, consisting of two separate synchrotron accelerators with equal circumferences. SIS100/300 shall provide beams of protons and heavy ions with high intensities and high energies. The existing GSI accelerators UNILAC and SIS18 shall serve as injector for SIS100/300. SIS100 will be de...
متن کاملUpgrade of the Sis18 Injection System*
SIS18 will serve as booster synchrotron for the proposed International Accelerator Facility FAIR [1] at GSI. The aim is to provide high intensity proton and low charge state heavy ion beams of e.g. U 28+ -ions with a repetition rate of 2.7 – 4 cycles per second. The operation with low charge state heavy ion beams requires modifications of the injection system. At present, the maximum field stre...
متن کاملTransverse Schottky and BTF Measurements in Intense Ion Beams in SIS18
The intense beams to be accelerated by SIS18 for FAIR will be affected by collective effects. Due to the low energy in SIS18 the beams will be particularly prone to space charge effects. Since the dynamics of such beams is not fully understood collective effects are subject to our investigation. Here we present transverse Schottky and beam transfer function (BTF) measurements that were performe...
متن کامل