Author: Romanov, A.L.
Paper Title Page
TUZE1 Experimental Phase-Space Tracking of a Single Electron in a Storage Ring 329
 
  • A.L. Romanov, J.K. Santucci, G. Stancari, A. Valishev
    Fermilab, Batavia, Illinois, USA
 
  This paper pre­sents the re­sults of the first ever ex­per­i­men­tal track­ing of the be­ta­tron and syn­chro­tron phases for a sin­gle elec­tron in the Fer­mi­lab’s IOTA ring. The re­ported tech­nol­ogy makes it is pos­si­ble to fully track a sin­gle elec­tron in a stor­age ring, which re­quires track­ing of am­pli­tudes and phases for both, slow syn­chro­tron and fast be­ta­tron os­cil­la­tions.  
slides icon Slides TUZE1 [3.600 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-TUZE1  
About • Received ※ 08 August 2022 — Revised ※ 11 August 2022 — Accepted ※ 21 August 2022 — Issue date ※ 27 August 2022
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TUPA02 Characterization of Octupole Elements for IOTA 351
 
  • J.N. Wieland
    MSU, East Lansing, Michigan, USA
  • J.D. Jarvis, A.L. Romanov, A. Valishev
    Fermilab, Batavia, Illinois, USA
 
  Funding: Work partially supported by the US Department of Energy, Office of Science, High Energy Physics under Cooperative Agreement award number DE-SC0018362 and Michigan State University.
The In­te­grable Op­tics Test Ac­cel­er­a­tor (IOTA) is a re­search stor­age ring con­structed and op­er­ated at Fer­mi­lab to demon­strate the ad­van­tages of non­lin­ear in­te­grable lat­tices. One of the non­lin­ear lat­tice con­fig­u­ra­tions with one in­te­gral of mo­tion is based on a string of short oc­tupoles. The re­sults of the in­di­vid­ual mag­net’s char­ac­ter­i­za­tions, which were nec­es­sary to de­ter­mine their mul­ti­pole com­po­si­tion and mag­netic cen­ters, are pre­sented. This in­for­ma­tion was used to se­lect and align the best sub­set of oc­tupoles for the IOTA run 4.
 
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-TUPA02  
About • Received ※ 03 August 2022 — Revised ※ 08 August 2022 — Accepted ※ 09 August 2022 — Issue date ※ 08 September 2022
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FRXD1
Demonstration of Optical Stochastic Cooling in an Electron Storage Ring  
 
  • J.D. Jarvis, D.R. Broemmelsiek, K. Carlson, D.R. Edstrom, V.A. Lebedev, S. Nagaitsev, H. Piekarz, A.L. Romanov, J. Ruan, J.K. Santucci, G. Stancari, A. Valishev
    Fermilab, Batavia, Illinois, USA
  • S. Chattopadhyay, A.J. Dick, P. Piot
    Northern Illinois University, DeKalb, Illinois, USA
  • I. Lobach
    University of Chicago, Chicago, Illinois, USA
 
  Op­ti­cal sto­chas­tic cool­ing (OSC), pro­posed nearly thirty years ago, re­places the con­ven­tional mi­crowave el­e­ments of sto­chas­tic cool­ing (SC) with op­ti­cal-fre­quency analogs, such as un­du­la­tors, op­ti­cal lenses and op­ti­cal am­pli­fiers. Here we dis­cuss the first ex­per­i­men­tal ob­ser­va­tion of OSC, which was per­formed at the Fermi Na­tional Ac­cel­er­a­tor Lab­o­ra­tory’s In­te­grable Op­tics Test Ac­cel­er­a­tor (IOTA) with 100-MeV elec­trons and a ra­di­a­tion wave­length of 950 nm. The ex­per­i­ment em­ployed a non-am­pli­fied con­fig­u­ra­tion of OSC and achieved a lon­gi­tu­di­nal damp­ing rate close to one order of mag­ni­tude larger than the beam’s nat­ural damp­ing due to syn­chro­tron ra­di­a­tion. The in­te­grated sys­tem demon­strated sub-fem­tosec­ond sta­bil­ity and a band­width of ~20 THz, a fac­tor of ~2000-times higher than con­ven­tional mi­crowave SC sys­tems. Cou­pling to the trans­verse planes en­abled si­mul­ta­ne­ous cool­ing of the beam in all de­grees of free­dom. This first demon­stra­tion of SC at op­ti­cal fre­quen­cies serves as a foun­da­tion for more ad­vanced ex­per­i­ments with high-gain op­ti­cal am­pli­fi­ca­tion and ad­vances op­por­tu­ni­ties for fu­ture op­er­a­tional OSC sys­tems at col­lid­ers and other ac­cel­er­a­tor fa­cil­i­ties.  
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