Author: Rial, E.C.M.
Paper Title Page
MOPAB126 BESSY III & MLS II - Status of the Development of the New Photon Science Facility in Berlin 451
 
  • P. Goslawski, M. Abo-Bakr, F. Andreas, M. Arlandoo, J. Bengtsson, V. Dürr, K. Holldack, J.-G. Hwang, A. Jankowiak, B.C. Kuske, J. Li, A.N. Matveenko, T. Mertens, A. Meseck, E.C.M. Rial, M. Ries, M.K. Sauerborn, A. Schälicke, M. Scheer, P. Schnizer, L. Shi, J. Viefhaus
    HZB, Berlin, Germany
  • J. Lüning
    UPMC, Paris, France
  
  HZB op­er­ates and de­vel­ops two syn­chro­tron ra­di­a­tion sources at Berlin Adler­shof. The larger one, BESSY II with an en­ergy of 1.7 GeV and 240 m cir­cum­fer­ence is op­ti­mized for soft-X rays and in op­er­a­tion since 1999. The smaller one is the MLS (Metrol­ogy Light Source), owned by the Physikalis­che Tech­nis­che Bun­de­sanstalt (PTB) - Ger­many’s Na­tional Metrol­ogy In­sti­tute. It is de­signed to ful­fill the spe­cial metrol­ogy needs of the PTB with an en­ergy of 0.6 GeV and 48 m cir­cum­fer­ence, cov­er­ing the spec­tral range from THz and IR to EUV/VUV. In 2020 a dis­cus­sion process has been started to de­fine the re­quire­ments for suc­ces­sors of BESSY II and MLS and to study the pos­si­bil­i­ties in­te­grate them into a new pho­ton sci­ence fa­cil­ity in Berlin Adler­shof. Here, we give a sta­tus re­port and pre­sent a first en­vis­aged pa­ra­me­ter space to both ma­chines (see also MOPAB262, MOPAB220, MOPAB048, MOPAB242).  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB126  
About • paper received ※ 18 May 2021       paper accepted ※ 24 June 2021       issue date ※ 18 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
TUPAB217 Effect of Undulators on Transverse Resonant Island Orbits 1927
 
  • E.C.M. Rial, J. Bahrdt, P. Goslawski, A. Meseck, M. Ries, M. Scheer
    HZB, Berlin, Germany
  
  For one week in Oc­to­ber 2020, BESSY II of­fered a Two Orbit mode to users for the first time*. In this Two Orbit mode, the ex­is­tence of trans­verse res­o­nant is­land buck­ets** are ex­ploited to store a sec­ond beam in the stor­age ring as an ’is­land orbit’, away from the pri­mary beam axis. This mode was of­fered with free range of mo­tion of the 12 out of vac­uum un­du­la­tors in­stalled at the BESSY II ring. Di­ag­nos­tics of the is­land orbit were lim­ited to a sin­gle cam­era mon­i­tor­ing bend­ing mag­net ra­di­a­tion from a sin­gle di­pole. A sig­nif­i­cant mo­tion of the is­land orbit was ob­served on this di­ag­nos­tic and cor­re­lated with un­du­la­tor mo­tion. This ob­ser­va­tion is re­ported, and sim­u­la­tions pre­sented to demon­strate how this mo­tion could arise. Cor­rec­tion schemes are sug­gested and dis­cussed.
*Two Orbit - a report on the first scheduled week of TRIBs user operation at BESSY II, M. Ries et al, these proceedings
**Proc. IPAC 2016, Busan, S Korea, paper THPMR017, p. 3427 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB217  
About • paper received ※ 19 May 2021       paper accepted ※ 21 June 2021       issue date ※ 22 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEPAB131 Magnetic Tuning and Installation Modifications of U48 Undulator for the Delhi Light Source (DLS) 2918
 
  • M. Tischer, P. Neumann, A. Schöps, P. Vagin, T. Vielitz, T. Wohlenberg
    DESY, Hamburg, Germany
  • M. Aggarwal, R.N. Dutt, S. Ghosh, J. Karmakar, S. Sahu
    IUAC, New Delhi, India
  • J. Bahrdt, E.C.M. Rial
    HZB, Berlin, Germany
  
  A com­pact THz ra­di­a­tion fa­cil­ity based on the prin­ci­ple of a pre-bunched Free Elec­tron Laser, called Delhi Light Source (DLS) is at the final stage of com­mis­sion­ing at IUAC, New Delhi, India. For gen­er­a­tion of THz ra­di­a­tion in DLS, an un­du­la­tor with pe­riod length of 48 mm (U48), built by HZB and re­fur­bished at DESY will be used. The mag­netic tun­ing and the field mea­sure­ments have been done on the U48 along with the de­sign and in­stal­la­tion of cor­rec­tion coils at the en­trance/exit of the U48. In ad­di­tion, hor­i­zon­tal and ver­ti­cal am­bi­ent field cor­rec­tion coils were in­te­grated into the mag­net gird­ers. A quadru­pole cor­rec­tion coil along the vac­uum cham­ber in order to mit­i­gate the de­fo­cus­ing ef­fect of the U48 on the elec­tron beam has been de­signed. The cur­rent through all coils has been ad­justed as a func­tion of the gap by the new con­trol sys­tem de­signed for the U48. In ad­di­tion, an ex­truded alu­minium vac­uum cham­ber was de­signed and fab­ri­cated and will be aligned with the the un­du­la­tor soon.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB131  
About • paper received ※ 19 May 2021       paper accepted ※ 05 July 2021       issue date ※ 11 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)