Author: Ries, M.
Paper Title Page
MOPEA012 Lifetime Studies at Metrology Light Source and ANKA 88
 
  • T. Goetsch, J. Feikes, M. Ries, G. Wüstefeld
    HZB, Berlin, Germany
  • A.-S. Müller
    KIT, Karlsruhe, Germany
  
  The Metrol­ogy Light Source (MLS)*, sit­u­ated in Berlin (Ger­many) is an elec­tron stor­age ring op­er­at­ing from 105 MeV to 630 MeV and is serv­ing as the na­tional pri­mary ra­di­a­tion source stan­dard from the near in­frared to the vac­uum ul­tra­vi­o­let spec­tral re­gion. In its stan­dard user mode, the life­time is dom­i­nated by the Tou­schek ef­fect. Mea­sure­ments and analy­sis of the Tou­schek life­time as a func­tion of beam cur­rent and RF-Volt­age will be pre­sented and com­pared to mea­sure­ments done at the ANKA elec­tron stor­age ring (Karl­sruhe, Ger­many) which op­er­ates at 0.5 to 2.5 GeV**.
* R. Klein et al., Phys. Rev. ST-AB 11, 110701 (2008)
** A.-S. Müller et al., Energy Calibration Of The ANKA Storage Ring, In Proceedings of EPAC 2004
 		 
 
TUPWO005 Survey of Beam Optics Solutions for the MLS Lattice 1883
 
  • M. Ries, J. Feikes, T. Goetsch, G. Wüstefeld
    HZB, Berlin, Germany
  
  The Metrol­ogy Light Source (MLS) is an elec­tron stor­age ring con­tain­ing 24 quadru­pole mag­nets which can be pow­ered in­di­vid­u­ally. Fully ex­plor­ing the ca­pa­bil­i­ties of the ma­chine op­tics by track­ing or ex­per­i­ment would be very time con­sum­ing. There­fore the quadrupoles were com­bined in five fam­i­lies and a nu­mer­i­cal brute force ap­proach was used to scan for areas of sta­ble so­lu­tions in the scope of lin­ear beam op­tics. In order to get in­for­ma­tion on the ex­pected beam life­times for each gen­er­ated op­tics, a model for the Tou­schek life­time was im­ple­mented. Sim­u­la­tion re­sults as well as ex­per­i­men­tal tests of se­lected op­tics will be pre­sented.  
 
WEOAB101 Single Particle Tracking for Simultaneous Long and Short Electron Bunches in the BESSY II Storage Ring 2038
 
  • M. Ruprecht, A. Jankowiak, A. Neumann, M. Ries, G. Wüstefeld
    HZB, Berlin, Germany
  • T. Weis
    DELTA, Dortmund, Germany
  
  A scheme where 1.5 ps and 15 ps long bunches (rms) can be stored si­mul­ta­ne­ously in the BESSY II stor­age ring has re­cently been pro­posed (BESSYVSR*). This paper pre­sents sim­u­la­tions of sin­gle par­ti­cle beam dy­nam­ics in­flu­enced by su­per­con­duct­ing cav­i­ties used for the strong lon­gi­tu­di­nal beam fo­cus­ing. The ef­fect of RF jit­ter on (very short) bunches is in­ves­ti­gated and re­sults are dis­cussed. Fur­ther­more, pos­si­ble ef­fects on beam dy­nam­ics dur­ing ramp up and ramp down of the high gra­di­ent fields in the cav­i­ties are stud­ied. The pri­mary goal is to re­veal pre­lim­i­nary de­sign spec­i­fi­ca­tions for RF jit­ter on the basis of sin­gle par­ti­cle dy­nam­ics.
* G. Wüstefeld, A. Jankowiak, J. Knobloch, M. Ries, Simultaneous Long and Short Electron Bunches in the BESSY II Storage Ring, Proceedings of IPAC2011, San Sebastián, Spain 		 
slides icon Slides WEOAB101 [3.955 MB]