MOCOXBS —  WG1: ERL facilities   (16-Sep-19   10:45—12:30)
Chair: M. Arnold, TU Darmstadt, Darmstadt, Germany
Paper Title Page
MOCOXBS02 ERL Operation of S-DALINAC* 1
 
  • M. Arnold, T. Bahlo, M. Dutine, R. Grewe, J.H. Hanten, L.E. Jürgensen, J. Pforr, N. Pietrallapresenter, F. Schließmann, M. Steinhorst, S. Weih
    TU Darmstadt, Darmstadt, Germany
  
  Funding: *Work supported by DFG through GRK 2128
The S-DALINAC is a superconducting electron accelerator operated at TU Darmstadt. It is running in recirculating operation since 1991. An upgrade done in the years 2015/2016 enables to use the S-DALINAC as an energy-recovery linac (ERL) [1]. The lattice is capable of a once- (up to 34 MeV) or twice-recirculating ERL operation (up to 68 MeV). For both modes dedicated beam dynamics simulations have been conducted. An important aspect is the effect of phase slippage and its influence on the quality of the decelerated beam. Furthermore, investigations regarding specialized diagnostic systems are currently ongoing. This is of great importance especially for the twice-recirculating ERL, where two beams of the same energy are transported through the same beam line. The commissioning of the different ERL modes started in 2017 and will be continued during upcoming beam times. This contribution will give an overview on the ERL modes at S-DALINAC. The beam dynamics simulations as well as diagnostics used will be discussed. Results and operational findings of the different ERL runs will be presented.
[1] N. Pietralla, Nuclear Physics News, Vol. 28, No. 2, (2018) 4. 		 
slides icon Slides MOCOXBS02 [3.807 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ERL2019-MOCOXBS02  
About • paper received ※ 15 September 2019       paper accepted ※ 31 October 2019       issue date ※ 24 June 2020  
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MOCOXBS03 Status of Novosibirsk ERL 5
 
  • N.A. Vinokurov
    BINP SB RAS, Novosibirsk, Russia
  
  The Novosibirsk ERL is dedicated electron beam source for three free electron lasers operating in the wavelength range 8 - 240 micron at average power up to 0.5 kW and peak power about 1 MW. Radiation users works at 8 user stations performing biological, chemical, physical and medical research. The Novosibirsk ERL is the first and the only four-turn ERL in the world. Its peculiar features include the normal-conductive 180 MHz accelerating system, the DC electron gun with the grid thermionic cathode, three operation modes of the magnetic system, and a rather compact (6×40 m2) design. The facility has been operating for users of terahertz radiation since 2004. The status of the installation and plans are described.  
slides icon Slides MOCOXBS03 [6.521 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ERL2019-MOCOXBS03  
About • paper received ※ 13 September 2019       paper accepted ※ 06 November 2019       issue date ※ 24 June 2020  
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MOCOXBS04 The Berlin Energy Recovery Linac Project BERLinPro - Status, Plans and Future Opportunities 8
 
  • M. Abo-Bakr, N. Al-Saokal, W. Anders, Y. Bergmann, K. Bürkmann-Gehrlein, A. Bundels, A.B. Büchel, P. Echevarria, A. Frahm, H.-W. Glock, F. Glöckner, F. Göbel, S. Heling, J.G. Hwang, A. Jankowiakpresenter, C. Kalus, T. Kamps, G. Klemz, J. Knobloch, J. Kolbe, J. Kühn, B.C. Kuske, J. Kuszynski, A.N. Matveenko, M. McAteer, A. Meseck, S. Mistry, R. Müller, A. Neumann, N. Ohm, K. Ott, F. Pflocksch, L. Pichl, J. Rahn, O. Schüler, M. Schuster, Y. Tamashevich, J. Ullrich, A. Ushakov, J. Völker
    HZB, Berlin, Germany
  • H. Huck
    DESY Zeuthen, Zeuthen, Germany
  
  Funding: Work supported by the German Bundesministerium für Bildung und Forschung, Land Berlin and grants of Helmholtz Association
The Helmholtz-Zentrum Berlin is constructing the Energy Recovery Linac Prototype BERLinPro, a SRF based demonstration facility for the science and technology of ERLs for future high power, high brilliance electron beam applications. BERLinPro was designed to accelerate a high current (100 mA, 50 MeV), high brilliance (norm. emittance below 1 mm mrad) cw electron beam. Given the recent prioritization of the BESSY II upgrade to the BESSY VSR variable pulse length storage ring, HZB is forced to reduce the project goals of BERLinPro. As a result, the project had to be rescoped with the goal to maximize its scientific impact within the present boundary conditions. We report on the last year’s progress of the building, the warm and cold infrastructure and on the time line, goals nd opportunities for the remaining project run time. 		 
slides icon Slides MOCOXBS04 [13.980 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ERL2019-MOCOXBS04  
About • paper received ※ 16 September 2019       paper accepted ※ 06 November 2019       issue date ※ 24 June 2020  
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MOCOXBS05 Status of the MESA ERL Project 14
 
  • F. Hug, K. Aulenbacher, R.G. Heine, D. Simon
    KPH, Mainz, Germany
  • K. Aulenbacher
    GSI, Darmstadt, Germany
  • K. Aulenbacher, S. Friederich
    HIM, Mainz, Germany
  • S. Friederich, P. Heil, R.F.K. Kempf, C. Matejcek
    IKP, Mainz, Germany
  
  Funding: This work has been supported by DFG through the PRISMA+ cluster of excellence EXC 2118/2019 and by the European Union’s Horizon 2020 Research and Innovation programme under Grant Agreement No 730871.
MESA is a recirculating superconducting accelerator under construction at Johannes Gutenberg-Universität Mainz. It can be operated in either external beam or ERL mode and will be used for high precision particle physics experiments. The operating beam current and energy in EB mode is 0.15 mA with polarized electrons at 155 MeV. In ERL mode a polarized beam of 1 mA at 105 MeV will be available. In a later construction stage of MESA the beam current in ERL-mode shall be upgraded to 10 mA (unpolarized). Civil construction and commissioning of components like electron gun, LEBT and SRF modules have been started already. We will give a project overview including the accelerator layout, the current status and an outlook to the next construction and commissioning steps. 		 
slides icon Slides MOCOXBS05 [14.029 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ERL2019-MOCOXBS05  
About • paper received ※ 14 September 2019       paper accepted ※ 06 November 2019       issue date ※ 24 June 2020  
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