ERL2019 - List of Authors (Voelker, J.)

Paper

Title

Page

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. Jankowiak, 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 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

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPNEC07

Comparison of Two Pareto Optimization Tools Using OPAL and ASTRA for a Dedicated BERLinPro Injector Optimization.

J. Völker
HZB, Berlin, Germany
A. Adelmann
PSI, Villigen PSI, Switzerland

BERLinPro is an Energy Recovery Linac (ERL) Project, currently being set up at the HZB. The accelerator consists of an injector part (SRF photo injector and booster section) and the ERL part (LINAC and recirculator section). Until realization of the final ERL setup further beam applications are under development using only the injector part of BERLinPro, like ultrafast electron diffraction (UED) or tomography experiments. For those cases a dedicated beam optic for the complete injector is required that differ from the standard ERL optics. Especially for UED experiments, an extreme short electron bunch and a tiny transverse emittance are needed. For the optimization of the injector two multi-parameter Pareto optimization tools were used. On the one hand, ASTRA with an external MATLAB optimizer, on the other hand, OPAL** with its new internal optimization tool. In this paper we will present both generic methods and compare their results.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THCOZBS02

Status of SRF Gun for BERLinPro

A. Neumann, N. Al-Saokal, D. Böhlick, A.B. Büchel, M. Bürger, P. Echevarria, A. Frahm, H.-W. Glock, F. Göbel, S. Heling, K. Janke, A. Jankowiak, T. Kamps, S. Klauke, G. Klemz, J. Knobloch, G. Kourkafas, J. Kühn, O. Kugeler, N. Leuschner, A.N. Matveenko, S. Mistry, N. Ohm, E. Panofski, H. Plötz, S. Rotterdam, M.A.H. Schmeißer, M. Schuster, H. Stein, Y. Tamashevich, J. Ullrich, A. Ushakov, J. Völker
HZB, Berlin, Germany
T. Kamps
HU Berlin, Berlin, Germany

Funding: Work supported by German Bundesministerium für Bildung und Forschung, Land Berlin, and grants of Helmholtz Association
Helmholtz-Zentrum Berlin (HZB) is on the final round to complete an high average current superconducting (SC) ERL as a prototype to demonstrate low normalized beam emittance of 1 mm·mrad at 100mA and short pulses of about 2 ps. The high brilliance beam will originate from an 1.4 x λ/2 cell SRF cavity with a normal-conducting, high quantum efficiency CsK2Sb cathode, implementing a modified HZDR-style cathode insert. This prototype injector potentially allows for 6 mA beam current and up to 3.5 MeV beam kinetic energy, limited by the modified twin TTF-III fundamental power couplers. In this contribution the operation of the SRF injector cavity with a Copper cathode within a dedicated beam test experiment called Gunlab will be presented. The second half of the talk will give an overview about on-going activities to refurbish and reinstall the SRF gun module in the accelerator hall in BERLinPro. Also an insight into the repair attempts of the first cavity suffering from field emission will be given.

Slides THCOZBS02 [21.091 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper	Title	Page
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. Jankowiak, 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 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
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPNEC07	Comparison of Two Pareto Optimization Tools Using OPAL and ASTRA for a Dedicated BERLinPro Injector Optimization.
	J. Völker HZB, Berlin, Germany A. Adelmann PSI, Villigen PSI, Switzerland
	BERLinPro is an Energy Recovery Linac (ERL) Project, currently being set up at the HZB. The accelerator consists of an injector part (SRF photo injector and booster section) and the ERL part (LINAC and recirculator section). Until realization of the final ERL setup further beam applications are under development using only the injector part of BERLinPro, like ultrafast electron diffraction (UED) or tomography experiments. For those cases a dedicated beam optic for the complete injector is required that differ from the standard ERL optics. Especially for UED experiments, an extreme short electron bunch and a tiny transverse emittance are needed. For the optimization of the injector two multi-parameter Pareto optimization tools were used. On the one hand, ASTRA with an external MATLAB optimizer, on the other hand, OPAL** with its new internal optimization tool. In this paper we will present both generic methods and compare their results.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THCOZBS02	Status of SRF Gun for BERLinPro
	A. Neumann, N. Al-Saokal, D. Böhlick, A.B. Büchel, M. Bürger, P. Echevarria, A. Frahm, H.-W. Glock, F. Göbel, S. Heling, K. Janke, A. Jankowiak, T. Kamps, S. Klauke, G. Klemz, J. Knobloch, G. Kourkafas, J. Kühn, O. Kugeler, N. Leuschner, A.N. Matveenko, S. Mistry, N. Ohm, E. Panofski, H. Plötz, S. Rotterdam, M.A.H. Schmeißer, M. Schuster, H. Stein, Y. Tamashevich, J. Ullrich, A. Ushakov, J. Völker HZB, Berlin, Germany T. Kamps HU Berlin, Berlin, Germany
	Funding: Work supported by German Bundesministerium für Bildung und Forschung, Land Berlin, and grants of Helmholtz Association Helmholtz-Zentrum Berlin (HZB) is on the final round to complete an high average current superconducting (SC) ERL as a prototype to demonstrate low normalized beam emittance of 1 mm·mrad at 100mA and short pulses of about 2 ps. The high brilliance beam will originate from an 1.4 x λ/2 cell SRF cavity with a normal-conducting, high quantum efficiency CsK2Sb cathode, implementing a modified HZDR-style cathode insert. This prototype injector potentially allows for 6 mA beam current and up to 3.5 MeV beam kinetic energy, limited by the modified twin TTF-III fundamental power couplers. In this contribution the operation of the SRF injector cavity with a Copper cathode within a dedicated beam test experiment called Gunlab will be presented. The second half of the talk will give an overview about on-going activities to refurbish and reinstall the SRF gun module in the accelerator hall in BERLinPro. Also an insight into the repair attempts of the first cavity suffering from field emission will be given.
	Slides THCOZBS02 [21.091 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)