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Thorndahl, L.

Paper Title Page
THPEC038 The Concept of Antiproton Accumulation in the RESR Storage Ring of the FAIR Project 4140
 
  • M. Steck, C. Dimopoulou, A. Dolinskyy, B. Franzke, T. Katayama, S.A. Litvinov, F. Nolden, C. Peschke
    GSI, Darmstadt
  • D. Möhl, L. Thorndahl
    CERN, Geneva
  
 

In the com­plex of the ac­cel­er­a­tors of the FAIR pro­ject the RESR stor­age ring is main­ly de­signed as an ac­cu­mu­la­tor ring for an­tipro­tons. The con­tin­u­ous ac­cu­mu­la­tion of pre-cooled batch­es with a cycle time of 10 s from the col­lec­tor ring is es­sen­tial to achieve the goal of a pro­duc­tion rate of 10 mil­lion an­tipro­tons per sec­ond. The ac­cu­mu­la­tion in the RESR uses a stochas­tic cool­ing sys­tem which op­er­ates in lon­gi­tu­di­nal phase space, sim­i­lar as pre­vi­ous an­tipro­ton ac­cu­mu­la­tor rings at CERN and FNAL. The in­gre­di­ents of the ac­cu­mu­la­tion sys­tem, the ring lat­tice func­tions, the elec­trode de­sign and the elec­tri­cal cir­cuits have been stud­ied in de­tailed sim­u­la­tions. A sys­tem has been found which safe­ly pro­vides the re­quired per­for­mance and of­fers the op­tion of up­grades, if high­er ac­cu­mu­la­tion rate is re­quired in fu­ture. Max­i­mum in­ten­si­ties of 100 bil­lion cooled an­tipro­tons are planned which are ex­pect­ed to stay below the in­sta­bil­i­ty thresh­old.