Author: Jankowiak, A.
Paper Title Page
MOPAB048 Robust Design and Control of the Nonlinear Dynamics for BESSY-III 209
 
  • J. Bengtsson, M. Abo-Bakr, P. Goslawski, A. Jankowiak, B.C. Kuske
    HZB, Berlin, Germany
  
  The de­sign phi­los­o­phy for a ro­bust pro­to­type lat­tice de­sign for BESSY III, i.e., that is in­sen­si­tive to small pa­ra­me­ter changes, e.g. en­gi­neer­ing tol­er­ances - based on a higher-or­der-achro­mat, a la: SLS, NSLS-II, MAX IV, and SLS 2 - is out­lined & pre­sented. As usual, a well op­ti­mized de­sign re­quires a clear un­der­stand­ing of the end-user re­quire­ments and close col­lab­o­ra­tion be­tween the lin­ear op­tics de­signer and non­lin­ear dy­nam­ics spe­cial­ist for a sys­tems ap­proach.  
poster icon Poster MOPAB048 [1.202 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB048  
About • paper received ※ 17 May 2021       paper accepted ※ 24 May 2021       issue date ※ 27 August 2021  
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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  
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MOPAB296 Statistical Analysis of 2D Single-Shot PPRE Bunch Measurements 939
 
  • M. Koopmans, J.-G. Hwang, A. Jankowiak, M. Ries, A. Schälicke, G. Schiwietz
    HZB, Berlin, Germany
  
  The pulse pick­ing by res­o­nant ex­ci­ta­tion (PPRE) method* is used to re­al­ize pseudo sin­gle-bunch ra­di­a­tion from a com­plex fill­ing pat­tern at the BESSY II stor­age ring. The PPRE bunch is ex­cited in the hor­i­zon­tal plane by a quasi-res­o­nant in­co­her­ent per­tur­ba­tion to in­crease the emit­tance of this bunch**. There­fore, the syn­chro­tron light of the PPRE bunch can be sep­a­rated by col­li­ma­tion from the ra­di­a­tion of the main bunch train at ded­i­cated beam­lines for tim­ing users. The prop­er­ties of the PPRE bunch de­pend on the stor­age ring set­tings and on the ex­ci­ta­tion pa­ra­me­ters. It is not triv­ial to dis­tin­guish be­tween the wanted in­trin­sic bunch broad­en­ing and an ad­di­tional po­si­tion fluc­tu­a­tion of the PPRE bunch. Using the po­ten­tial of the new di­ag­nos­tics beam­line with the pos­si­bil­ity to ob­serve an ad­di­tional spa­tial di­men­sion with a fast streak cam­era, we in­tro­duce a new method to study the prop­er­ties of the PPRE bunch***. Ap­ply­ing a sta­tis­ti­cal analy­sis to a se­ries of sin­gle-turn im­ages en­ables dis­tin­guish­ing be­tween hor­i­zon­tal orbit mo­tion and the broad­en­ing of the bunch due to the ex­ci­ta­tion. Mea­sure­ments are pre­sented and the re­sults are com­pared with data from the BPM sys­tem.
* K. Holldack et al., Nature Commun. 5 (2014) 4010.
** J.-G. Hwang et al., Nucl. Instrum. Methods A940 (2019) 387.
*** G. Schiwietz et al., Nucl. Instrum. Methods A990 (2021) 164992. 		 
poster icon Poster MOPAB296 [2.074 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB296  
About • paper received ※ 19 May 2021       paper accepted ※ 02 June 2021       issue date ※ 23 August 2021  
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