• M.O.A. El Ghazaly, A.A. Almukhem, A.M. Mandil
  KACST, Riyadh
• A.I. Papash
  JINR, Dubna, Moscow Region
• C.P. Welsch
  Cockcroft Institute, Warrington, Cheshire

At the Na­tion­al Cen­tre for Math­e­mat­ics and Physics (NCMP), at the King Ab­du­laz­iz City for Sci­ence and Tech­nol­o­gy (KACST), Saudi Ara­bia, a ver­sa­tile low en­er­gy ion in­jec­tor has been de­vel­oped in col­lab­o­ra­tion with the QUASAR group. This pro­ject will allow for a broad ex­per­i­men­tal pro­gram with most dif­fer­ent kinds of ions both in sin­gle pass se­tups, but also with ions stored in a fixed-en­er­gy elec­tro­stat­ic stor­age ring. In this con­tri­bu­tion, the de­sign of the in­jec­tor is pre­sent­ed. It was de­signed for beams with en­er­gies of up to 30 kV/q and will allow for switch­ing be­tween dif­fer­ent ion sources from e.g. duo­plas­ma­tron to elec­tro­spray ion sources and to thus pro­vide the users with a wide range of dif­fer­ent beams. The me­chan­i­cal con­struc­tion of the in­jec­tor is sum­ma­rized and the sta­tus of its as­sem­bly at KACST pre­sent­ed.

• G.A. Karamysheva, A.I. Papash
  JINR, Dubna, Moscow Region
• C.P. Welsch
  Cockcroft Institute, Warrington, Cheshire

The Ul­tra-Low en­er­gy Stor­age Ring (USR) with­in the fu­ture Fa­cil­i­ty for Low-en­er­gy An­tipro­ton and Ion Re­search (FLAIR) will de­cel­er­ate an­tipro­ton beams from 300 keV to en­er­gies of only 20 keV. Cooled beams will then be ex­tract­ed and pro­vid­ed to ex­ter­nal ex­per­i­ments. The large va­ri­ety of planned ex­per­i­ments re­quires a high­ly flex­i­ble lon­gi­tu­di­nal time struc­ture of the ex­tract­ed bunch­es, rang­ing from ul­tra-short puls­es in the nanosec­ond regime to quasi DC beams. This re­quires fast as well as slow ex­trac­tion in order to cover whole range of en­vis­aged beam pa­ram­e­ters. A par­tic­u­lar chal­lenge was to com­bine el­e­ments for fast and slow ex­trac­tion in one straight sec­tion of this elec­tro­stat­ic ring. In this con­tri­bu­tion we pre­sent the re­sults of beam dy­nam­ic sim­u­la­tions and de­scribe the over­all ex­trac­tion scheme in de­tail.

• A.I. Papash
  MPI-K, Heidelberg
• O.E. Gorda
  GSI, Darmstadt
• A.I. Papash
  JINR, Dubna, Moscow Region
• C.P. Welsch
  Cockcroft Institute, Warrington, Cheshire

Elec­tro­stat­ic stor­age rings have proven to be in­valu­able tools for atom­ic and molec­u­lar physics. Due to the mass in­de­pen­dence of the elec­tro­stat­ic rigid­i­ty, these ma­chines are able to store a wide range of dif­fer­ent par­ti­cles, from light ions to heavy singly charged bio-molecules. How­ev­er, ear­li­er mea­sure­ments showed strong space charge lim­i­ta­tions; prob­a­bly linked to non-lin­ear fields that can­not be com­plete­ly avoid­ed in such ma­chines. The na­ture of these ef­fects is not fully un­der­stood. In this con­tri­bu­tion, we pre­sent the re­sults from sim­u­lat­ing an elec­tro­stat­ic stor­age ring under con­sid­er­a­tion of non-lin­ear fields as well as space charge ef­fects using the com­put­er code SCALA.

• A.I. Papash
  MPI-K, Heidelberg
• O.E. Gorda
  GSI, Darmstadt
• A.I. Papash
  JINR, Dubna, Moscow Region
• C.P. Welsch
  Cockcroft Institute, Warrington, Cheshire

Elec­tro­stat­ic stor­age rings have proven to be in­valu­able tools for atom­ic and molec­u­lar physics. Due to the mass in­de­pen­dence of the elec­tro­stat­ic rigid­i­ty, these ma­chines are able to store a wide range of dif­fer­ent par­ti­cles, from light ions to heavy singly charged bio-molecules. How­ev­er, ear­li­er mea­sure­ments showed strong space charge lim­i­ta­tions; prob­a­bly linked to non-lin­ear fields that can­not be com­plete­ly avoid­ed in such ma­chines. The na­ture of these ef­fects is not fully un­der­stood. In this con­tri­bu­tion, we pre­sent the re­sults from sim­u­lat­ing an elec­tro­stat­ic stor­age ring under con­sid­er­a­tion of non-lin­ear fields as well as space charge ef­fects using the com­put­er code SCALA.