Author: Perron, T.P.
Paper Title Page
MOXA01 Commissioning and Restart of ESRF-EBS 1
 
  • S.M. White, N. Carmignani, L.R. Carver, J. Chavanne, L. Farvacque, L. Hardy, J. Jacob, G. Le Bec, S.M. Liuzzo, T.P. Perron, Q. Qin, P. Raimondi, J.-L. Revol, K.B. Scheidt
    ESRF, Grenoble, France
  
  The ESRF op­er­ates a 6 GeV 4th gen­er­a­tion light source, the ESRF-EBS. This stor­age ring is the first to im­ple­ment the Hy­brid Multi-Bend Achro­mat lat­tice (HMBA). The HMBA lat­tice pro­vides a re­duc­tion of the hor­i­zon­tal emit­tance of ap­prox­i­mately a fac­tor 30 with re­spect to the for­mer Dou­ble Bend Achro­mat (DBA) struc­ture, con­sid­er­ably im­prov­ing the bril­liance and trans­verse co­her­ence of the ESRF ac­cel­er­a­tor com­plex while main­tain­ing large hor­i­zon­tal ac­cep­tance and ex­cel­lent life­time per­for­mance. In this re­port, the char­ac­ter­is­tics of the HMBA lat­tice will be re­viewed and the beam com­mis­sion­ing re­sults and first op­er­a­tion ex­pe­ri­ence of the new ESRF stor­age ring will be pre­sented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOXA01  
About • paper received ※ 11 May 2021       paper accepted ※ 31 August 2021       issue date ※ 01 September 2021  
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MOPAB021 A Dispersive Quadrupole Scan Technique for Transverse Beam Characterization 107
 
  • J. Kallestrup, M. Aiba
    PSI, Villigen PSI, Switzerland
  • N. Carmignani, T.P. Perron
    ESRF, Grenoble, France
  
  Quadru­pole scans are one of the stan­dard tech­niques to char­ac­ter­ize the trans­verse beam prop­er­ties in trans­fer lines or linacs. How­ever, in the pres­ence of dis­per­sion the usage of reg­u­lar quadru­pole scans will lead to er­ro­neous es­ti­mates of the beam pa­ra­me­ters. The stan­dard so­lu­tion to this prob­lem is to mea­sure the dis­per­sion and then sub­tract it in the post-analy­sis of the quadru­pole scan mea­sure­ments as­sum­ing the de­sign en­ergy spread. Here we show that the dis­per­sive con­tri­bu­tion to the beam size can be in­cluded in the quadru­pole scan pro­ce­dure, form­ing a lin­ear sys­tem of equa­tions that can be solved to ob­tain both the be­ta­tronic and dis­per­sive beam pa­ra­me­ters. The method is tested at both the SLS and ESRF booster-to-ring trans­fer lines lead­ing to rea­son­able es­ti­mates of the beam pa­ra­me­ters.  
poster icon Poster MOPAB021 [0.447 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB021  
About • paper received ※ 19 May 2021       paper accepted ※ 02 June 2021       issue date ※ 19 August 2021  
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MOPAB051 Operation of the ESRF Booster with the New EBS Storage Ring 221
 
  • N. Carmignani, L.R. Carver, S.M. Liuzzo, T.P. Perron, S.M. White
    ESRF, Grenoble, France
  
  The Ex­tremely Bril­liant Source (EBS) has re­placed the old ESRF Stor­age Ring (SR) dur­ing the 2019 one-year shut­down. The in­jec­tor chain, com­posed of a Linac, a booster syn­chro­tron, and two trans­fer lines, was not re­placed. Nev­er­the­less, some major hard­ware up­grades were an­tic­i­pated prior to the long shut­down to en­sure its long-term re­li­a­bil­ity. The shut­down in­ter­ven­tions fo­cused on re­duc­ing the ma­chine cir­cum­fer­ence to cope with the new RF fre­quency of the SR. The sta­tus of the up­graded booster will be pre­sented with a focus on the strat­egy used to lower hor­i­zon­tal emit­tance es­pe­cially via emit­tance ex­change.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB051  
About • paper received ※ 14 May 2021       paper accepted ※ 28 May 2021       issue date ※ 25 August 2021  
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MOPAB116 A Flexible Injection Scheme for the ESRF-EBS 421
 
  • S.M. White, N. Carmignani, L.R. Carver, M. Dubrulle, L. Hoummi, S.M. Liuzzo, M. Morati, T.P. Perron
    ESRF, Grenoble, France
  
  The ESRF-EBS stor­age ring light source started com­mis­sion­ing in 2019 and suc­cess­fully re­sumed users op­er­a­tion in 2020. Due to the smaller emit­tance and con­se­quently re­duced life­time fre­quent in­jec­tions are re­quired that can po­ten­tially dis­turb beam lines ex­per­i­ments. In ad­di­tion, op­er­at­ing the ma­chine with low beta straight sec­tion and re­duced in­ser­tion de­vices (ID) gaps are con­sid­ered, there­fore re­duc­ing the ver­ti­cal aper­ture of the ma­chine. Al­ter­na­tives to the stan­dard off-axis in­jec­tion scheme al­low­ing for ef­fi­cient in­jec­tion in re­duced aper­tures with min­i­mized per­tur­ba­tions are ex­plored. A flex­i­ble lay­out for po­ten­tial in­te­gra­tion in the ESRF-EBS lat­tice is pro­posed.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB116  
About • paper received ※ 11 May 2021       paper accepted ※ 27 May 2021       issue date ※ 24 August 2021  
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MOPAB117 Single Bunch Collective Effects in the EBS Storage Ring 425
 
  • L.R. Carver, E. Buratin, N. Carmignani, F. Ewald, L. Hoummi, S.M. Liuzzo, T.P. Perron, B. Roche, S.M. White
    ESRF, Grenoble, France
  
  The ESRF stor­age ring (SR) has been dis­man­tled and re­placed by the Ex­tremely Bril­liant Source (EBS) which has now been com­mis­sioned. Beam based mea­sure­ments have been per­formed to char­ac­terise the im­ped­ance of the new ma­chine and to make a first com­par­i­son with pre­dic­tions. The re­sults from in­sta­bil­ity thresh­old scans and tune shift mea­sure­ments will be pre­sented, as well as bunch length and po­si­tion vari­a­tion with cur­rent and mi­crowave thresh­old mea­sure­ments.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB117  
About • paper received ※ 11 May 2021       paper accepted ※ 31 May 2021       issue date ※ 25 August 2021  
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MOPAB224 Optimization and Error Studies for the USSR HMBA Lattice 730
 
  • L. Hoummi, N. Carmignani, L.R. Carver, S.M. Liuzzo, T.P. Perron, S.M. White
    ESRF, Grenoble, France
  • I.A. Ashanin, S.M. Polozov
    MEPhI, Moscow, Russia
  • T. Kulevoy
    ITEP, Moscow, Russia
  • T. Kulevoy
    NRC, Moscow, Russia
  
  Sev­eral new ac­cel­er­a­tor fa­cil­i­ties will be built in Rus­sia in the next few years. One of those fa­cil­i­ties is a 6 GeV stor­age ring (SR) light source, the Ul­ti­mate Source of Syn­chro­tron Ra­di­a­tion (USSR) to be built in Protvino, near Moscow. The Crem­lin+ pro­ject aims to in­cor­po­rate in this ac­tiv­ity the best ex­pe­ri­ence of Eu­ro­pean Ac­cel­er­a­tor Lab­o­ra­to­ries. The op­ti­miza­tion of such op­tics in­clud­ing re­al­is­tic er­rors and a com­mis­sion­ing-like se­quence of cor­rec­tions, using Multi-Ob­jec­tive Ge­netic Al­go­rithms (NSGA-II) is pre­sented. Sev­eral cor­rec­tions schemes are also tested.  
poster icon Poster MOPAB224 [1.164 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB224  
About • paper received ※ 12 May 2021       paper accepted ※ 01 June 2021       issue date ※ 13 August 2021  
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TUPAB048 HMBA Optics Correction Experience at ESRF 1462
 
  • S.M. Liuzzo, N. Carmignani, L.R. Carver, L. Farvacque, T.P. Perron, P. Raimondi, S.M. White
    ESRF, Grenoble, France
  
  The ESRF-EBS stor­age ring, suc­cess­fully com­mis­sioned in 2020, op­er­ates the HMBA lat­tice, first pro­posed in * and then adopted in sev­eral re­cent up­grade pro­grams. The suc­cess­ful and timely com­mis­sion­ing of the stor­age is in large part due to the ex­cel­lent op­tics con­trol achieved over that pe­riod. De­sign per­for­mance were ob­tained with lower than pre­dicted cor­rec­tion strengths, lo­cal­ized for the most part in the vicin­ity of sex­tupoles. This re­mark­able be­hav­ior is not only the re­sult of the cor­rec­tive ac­tions taken dur­ing the com­mis­sion­ing but also of the ex­tremely ac­cu­rate con­cep­tion and align­ment of the ma­chine. This re­port sum­ma­rizes the steps that lead to the pre­sent per­for­mances and dis­cusses their sta­bil­ity over time.
* J.Biasci et al. Synchrotron Radiation News27, 8 (2014), https://doi.org/10.1080/08940886.2014.970931. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB048  
About • paper received ※ 10 May 2021       paper accepted ※ 11 June 2021       issue date ※ 20 August 2021  
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TUPAB049 USSR HMBA Storage Ring Lattice Options 1466
 
  • S.M. Liuzzo, N. Carmignani, L.R. Carver, J. Chavanne, L. Hoummi, J. Jacob, T.P. Perron, R. Versteegen, S.M. White
    ESRF, Grenoble, France
  • I.A. Ashanin, V.S. Dyubkov, S.M. Polozov
    MEPhI, Moscow, Russia
  • I.A. Ashanin, V.S. Dyubkov, T. Kulevoy, S.M. Polozov
    NRC, Moscow, Russia
  • T. Kulevoy
    ITEP, Moscow, Russia
  
  Funding: European Union’s Horizon 2020 research and innovation program under grant #871072 Russian federation resolution #287
Sev­eral new ac­cel­er­a­tor fa­cil­i­ties will be built in Rus­sia in a few years from now. One of those fa­cil­i­ties is a 6GeV stor­age ring (SR) light source (USSR - Ul­ti­mate Source of Syn­chro­tron Ra­di­a­tion) to be built in Protvino, near Moscow. The Crem­lin+ pro­ject aims to in­cor­po­rate in this ac­tiv­ity the best ex­pe­ri­ence of Eu­ro­pean Ac­cel­er­a­tor Lab­o­ra­to­ries. The de­sign of the op­tics for this SR is pre­sented here in two dec­li­na­tions lead­ing to 70 pm-rad equi­lib­rium hor­i­zon­tal emit­tance. The first is a 40 cells lat­tice, the sec­ond is the same but in­cludes high field Short Bend­ing mag­net sources in each cell. Op­tics and high order mul­ti­pole op­ti­miza­tions are per­formed to ob­tain suf­fi­cient life­time and dy­namic aper­ture for a con­ser­v­a­tive off-axis in­jec­tion. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB049  
About • paper received ※ 12 May 2021       paper accepted ※ 11 June 2021       issue date ※ 21 August 2021  
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TUPAB050 A Long Booster Option for the USSR 6 GeV Storage Ring 1470
 
  • S.M. Liuzzo, N. Carmignani, L.R. Carver, L. Hoummi, T.P. Perron, R. Versteegen, S.M. White
    ESRF, Grenoble, France
  • I.A. Ashanin, S.M. Polozov
    MEPhI, Moscow, Russia
  • I.A. Ashanin, T. Kulevoy, S.M. Polozov
    NRC, Moscow, Russia
  • T. Kulevoy
    ITEP, Moscow, Russia
  
  Funding: European Union’s Horizon 2020 research and innovation program under grant #871072 Russian federation resolution no. 287
The de­sign of the op­tics of a full length 6 GeV booster for the USSR (Ul­ti­mate Source of Syn­chro­tron Ra­di­a­tion) are pre­sented. This op­tion al­ready fol­lowed with suc­cess by other lab­o­ra­to­ries, would allow to ob­tain a small emit­tance in­jected beam thus en­abling smooth top-up op­er­a­tion. De­tails of the de­sign in­spired by the ESRF DBA lat­tice and the pos­si­ble op­er­at­ing modes are de­scribed. The trans­fer lines booster to stor­age ring are also ad­dressed in this paper. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB050  
About • paper received ※ 12 May 2021       paper accepted ※ 11 June 2021       issue date ※ 24 August 2021  
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THPAB074 ESRF-EBS: Implementation, Performance and Restart of User Operation 3929
 
  • J.-L. Revol, P. Berkvens, J.-F. Bouteille, N. Carmignani, L.R. Carver, J.M. Chaize, J. Chavanne, F. Ewald, A. Franchi, L. Hardy, J. Jacob, L. Jolly, G. Le Bec, I. Leconte, S.M. Liuzzo, D. Martin, J. Pasquaud, T.P. Perron, Q. Qin, P. Raimondi, B. Roche, K.B. Scheidt, R. Versteegen, S.M. White
    ESRF, Grenoble, France
  
  The Eu­ro­pean Syn­chro­tron Ra­di­a­tion Fa­cil­ity - Ex­tremely Bril­liant Source (ESRF-EBS) is a fa­cil­ity up­grade al­low­ing its sci­en­tific users to take ad­van­tage of the first high-en­ergy 4th gen­er­a­tion light source. In De­cem­ber 2018, after 30 years of op­er­a­tion, the beam stopped for a 12-month shut­down to dis­man­tle the old stor­age ring and to in­stall the new X-ray source. In De­cem­ber 2019, the first beam was stored and ac­cu­mu­lated in the stor­age ring, al­low­ing the vac­uum con­di­tion­ing and tun­ing to be started. The beam was de­liv­ered to beam­lines in March 2020 for their com­mis­sion­ing. On 25 Au­gust, the user pro­gramme was restarted with beam pa­ra­me­ters very close to nom­i­nal val­ues. In this re­port, the mile­stones and key as­pects of the re­turn to user-mode op­er­a­tion are pre­sented and dis­cussed.  
poster icon Poster THPAB074 [2.864 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB074  
About • paper received ※ 19 May 2021       paper accepted ※ 26 July 2021       issue date ※ 01 September 2021  
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