Title :
Beam dynamics in the 1.3 GeV high intensity ESS coupled cavity linac
Author :
Pabst, M. ; Bongardt, K.
Author_Institution :
Forschungszentrum Julich GmbH, Germany
Abstract :
The 700 MHz coupled cavity linac (CCL) of the European Spallation Source (ESS) accelerates H--ions up to 1.334 GeV. The bunch current is 214 mA and the average current 3.84 mA. Four tanks are fed by one 4 MW klystron. The phase slip of 4° at injection is not critical. After every second tank a doublet is installed for transverse focusing providing a `round´ beam. The other intertank sections are used for beam diagnostic elements and steering. To find the smallest injection energy, RMS and total emittances are studied by multiparticle calculations and by varying the injection energy between 70 and 150 MeV. In addition the influence of field and phase errors is considered. For the low loss injection into the following compressor rings, the problem of partly filled bunches is examined
Keywords :
accelerator RF systems; accelerator cavities; beam handling techniques; klystrons; particle beam diagnostics; particle beam dynamics; particle beam focusing; particle beam injection; proton accelerators; 1.334 GeV; 214 mA; 3.84 mA; 4 MW; 70 to 150 MeV; European Spallation Source; H; H--ions; RMS emittance; average current; beam diagnostic elements; beam dynamics; beam injection; beam steering; bunch current; compressor rings; field errors; high intensity ESS coupled cavity linac; intertank sections; klystron; multiparticle calculations; partly filled bunches; phase errors; phase slip; total emittance; transverse focusing; Acceleration; Costs; Electronic switching systems; Impedance; Klystrons; Leg; Linear particle accelerator; Neutrons; Optical coupling; Particle beams;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505827
