Author: Knafel, M.A.
Paper Title Page
TUPAB065 Solaris Storage Ring Performance After 6 Years of Operation 1515
 
  • A.I. Wawrzyniak, A. Curcio, K. Gula, M.A. Knafel, G.W. Kowalski, A.M. Marendziak, R. Panaś, M. Waniczek, M. Wiśniowski
    NSRC SOLARIS, Kraków, Poland
 
  So­laris is a third gen­er­a­tion light source op­er­at­ing since 2015 in Kraków, Poland. Be­tween 2015 and 2018 the syn­chro­tron as well as two beam­lines were com­mis­sioned. Dur­ing com­mis­sion­ing phases, the good per­for­mance of So­laris stor­age ring has been reached. The beam op­tics was brought close to the de­sign one. Since Oc­to­ber 2018 So­laris stor­age ring is in the user op­er­a­tion mode. More­over, two other beam­lines with the el­lip­ti­cally po­lar­ized un­du­la­tors used as source were in­stalled and are under com­mis­sion­ing now. In 2020 the total beam avail­abil­ity of 93% was reached with the av­er­age cir­cu­lat­ing cur­rent of 400 mA and the total life­time of 15 h. Over last two years few im­prove­ments of the stor­age ring were done to op­ti­mize the stor­age ring per­for­mance. The Lan­dau cav­i­ties were tuned to im­prove the Tou­schek life­time and sup­press the in­sta­bil­i­ties. Two di­ag­nos­tics beam­lines were in­stalled and com­mis­sioned al­low­ing for the beam sizes in three planes and emit­tance mea­sure­ments. The stor­age ring op­tics was fine-tuned to in­crease the dy­namic aper­ture.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB065  
About • paper received ※ 19 May 2021       paper accepted ※ 26 May 2021       issue date ※ 16 August 2021  
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TUPAB277 Bunch Length Characterizations for the Solaris Injector LINAC 2117
 
  • A. Curcio, M.A. Knafel, G.W. Kowalski, R. Panaś, M. Waniczek, A.I. Wawrzyniak
    NSRC SOLARIS, Kraków, Poland
 
  Dur­ing 2020 the first char­ac­ter­i­za­tion of bunch length and bunch pro­file in the So­laris in­jec­tor LINAC has been per­formed since the start of its op­er­a­tion. In ab­sence of more so­phis­ti­cated bunch length di­ag­nos­tics, we have adopted an in­ver­sion al­go­rithm ap­plied to beam en­ergy spec­tra. In prac­tice, the method ap­plies a trans­for­ma­tion ma­trix which maps the par­ti­cle en­ergy into the par­ti­cle lon­gi­tu­di­nal co­or­di­nate along the bunch. The con­struc­tion of this ma­trix is made an­a­lyt­i­cally, based on the so­lu­tion of the Li­ou­ville equa­tion for the study of the lon­gi­tu­di­nal beam dy­nam­ics. The an­a­lytic ap­proach has been bench­marked with ex­per­i­men­tal mea­sure­ments of the beam prop­er­ties along the ma­chine and cross-checked with other tools, as par­ti­cle track­ing and/or beam op­tics codes. The final re­sults are pre­sented. More­over, a new di­ag­nos­tic sta­tion at the end of the LINAC has been in­stalled which will host ex­per­i­ments of co­her­ent ra­di­a­tion emis­sion that will be used to con­firm the va­lid­ity of our ob­ser­va­tions. Pre­lim­i­nary sim­u­la­tions of the co­her­ent spec­tra are fi­nally re­ported.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB277  
About • paper received ※ 18 May 2021       paper accepted ※ 17 June 2021       issue date ※ 12 August 2021  
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