IPAC2014 - List of Authors (Mickat, S.)

Paper	Title	Page
THPME004	Further R&D for a New Superconducting CW Heavy Ion Linac@GSI	3211
	W.A. Barth, S. Mickat GSI, Darmstadt, Germany M. Amberg, K. Aulenbacher, V. Gettmann HIM, Mainz, Germany F.D. Dziuba, H. Podlech, U. Ratzinger IAP, Frankfurt am Main, Germany
	A low energy beam line (1.4 MeV/u) behind the GSI High Charge State Injecor will provide cw-heavy ion beams with high beam intensity. It is foreseen to build a new cw-heavy ion-linac for post acceleration up to 7.3 MeV/u. In preparation an advanced R&D program is defined: The first linac section (financed by HIM and partly by HGF-ARD-initiative) comprising a sc CH-cavity embedded by two sc solenoids will be tested in 2014/15 as a demonstrator. After successful testing the construction of an advanced cryomodule comprising four rf cavities is foreseen. As an intermediate step towards an entire cw-linac the use of a double of two CH-cavities is planned: Ashort 5 cell cavity should be mounted directly behind the demonstrator cavity inside a short cryostat. The design of the cw linac based on shorter sc CH-cavities would minimize the overall technical risk and costs. Besides with this cavity an optimized operation of the whole linac especially with respect to beam quality could be achieved. Last but not least the concept of continuous energy variation applying phase variation between the two cavities with constant beta profile could be tested.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME004
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPME005	Optimization of an IH-cavity based High Energy Heavy-ion Linac at GSI	3214
	A. Orzhekhovskaya, G. Clemente, L. Groening, S. Mickat, B. Schlitt GSI, Darmstadt, Germany
	A new high energy heavy-ion injector (HE-Linac) for the FAIR project was proposed as replacement for the existing post-stripper linac at the GSI UNILAC. Six 10⁸ MHz IH-type drift-tube linac cavities within a total length of about 24 m accelerate the ions (up to U²⁸⁺) from 1.4 MeV/u up to 11.4 MeV/u. Fast pulsed quadrupole triplet lenses are used for transverse focusing in between the IH cavities. The optimization of the HE linac with respect to the emittance growth reduction is investigated.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME005
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPME006	Straight Injection of an intense Uranium Beam into the GSI High Current RFQ	3217
	H. Vormann, A. Adonin, W.A. Barth, L.A. Dahl, P. Gerhard, L. Groening, R. Hollinger, M.T. Maier, S. Mickat, A. Orzhekhovskaya, C. Xiao, S.G. Yaramyshev GSI, Darmstadt, Germany
	A dedicated high current uranium ion source and LEBT will be built at the GSI High Current Injector (HSI), to fulfil the intensity requirements for FAIR (Facility for Antiproton and Ion Research at Darmstadt). This new injection line will be integrated into the existing complex which already comprises two branches. The new LEBT is designed as a straight injection line without dipole magnet, i.e. without dispersive charge state separation. All uranium charge states, coming from the ion source, are transported to the heavy ion high current GSI-HSI-RFQ. Only the design charge state U⁴⁺ is accelerated to the final RFQ energy. The new LEBT design is based on beam emittance and current measurements behind the existing ion source. Beam dynamics simulations have been performed with the codes TRACE-3D (envelopes), DYNAMION, BEAMPATH and TRACK (multiparticle). The recent layout of the LEBT, as well as the results of beam dynamics studies are presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME006
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPME007	A Virtual Charge State Separator as an Advanced Tool Coupling Measurements and Simulations	3220
	S.G. Yaramyshev, A. Adonin, W.A. Barth, L.A. Dahl, P. Gerhard, L. Groening, R. Hollinger, M.T. Maier, S. Mickat, A. Orzhekhovskaya, H. Vormann GSI, Darmstadt, Germany
	A new Low Energy Beam Transport (LEBT) for multi-charge uranium beam will be built at GSI High Current Injector. All uranium charge states coming from the new ion source will be injected into GSI heavy ion high current HSI-RFQ, but only design ions U⁴⁺ will be accelerated to the final RFQ energy. A detailed knowledge about injected beam- current and -emittance for pure design U⁴⁺ ions is necessary for a proper beam line design commissioning and operation, while the measurements are possible only for a full beam including all charge states. Detailed measurements of beam current and emittance are performed behind the first quadrupole triplet at the beam line. A dedicated algorithm, based on combination of measurements and results of an advanced beam dynamics simulations, provides for an extraction of beam- current and -emittance for only U⁴⁺ component of a beam. The obtained results and final beam dynamics design for the new straight beam line are presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME007
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Further R&D for a New Superconducting CW Heavy Ion Linac@GSI

3211

W.A. Barth, S. Mickat
GSI, Darmstadt, Germany
M. Amberg, K. Aulenbacher, V. Gettmann
HIM, Mainz, Germany
F.D. Dziuba, H. Podlech, U. Ratzinger
IAP, Frankfurt am Main, Germany

A low energy beam line (1.4 MeV/u) behind the GSI High Charge State Injecor will provide cw-heavy ion beams with high beam intensity. It is foreseen to build a new cw-heavy ion-linac for post acceleration up to 7.3 MeV/u. In preparation an advanced R&D program is defined: The first linac section (financed by HIM and partly by HGF-ARD-initiative) comprising a sc CH-cavity embedded by two sc solenoids will be tested in 2014/15 as a demonstrator. After successful testing the construction of an advanced cryomodule comprising four rf cavities is foreseen. As an intermediate step towards an entire cw-linac the use of a double of two CH-cavities is planned: Ashort 5 cell cavity should be mounted directly behind the demonstrator cavity inside a short cryostat. The design of the cw linac based on shorter sc CH-cavities would minimize the overall technical risk and costs. Besides with this cavity an optimized operation of the whole linac especially with respect to beam quality could be achieved. Last but not least the concept of continuous energy variation applying phase variation between the two cavities with constant beta profile could be tested.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME004

Export •

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

THPME005

Optimization of an IH-cavity based High Energy Heavy-ion Linac at GSI

3214

A. Orzhekhovskaya, G. Clemente, L. Groening, S. Mickat, B. Schlitt
GSI, Darmstadt, Germany

A new high energy heavy-ion injector (HE-Linac) for the FAIR project was proposed as replacement for the existing post-stripper linac at the GSI UNILAC. Six 10⁸ MHz IH-type drift-tube linac cavities within a total length of about 24 m accelerate the ions (up to U²⁸⁺) from 1.4 MeV/u up to 11.4 MeV/u. Fast pulsed quadrupole triplet lenses are used for transverse focusing in between the IH cavities. The optimization of the HE linac with respect to the emittance growth reduction is investigated.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME005

Export •

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

THPME006

Straight Injection of an intense Uranium Beam into the GSI High Current RFQ

3217

H. Vormann, A. Adonin, W.A. Barth, L.A. Dahl, P. Gerhard, L. Groening, R. Hollinger, M.T. Maier, S. Mickat, A. Orzhekhovskaya, C. Xiao, S.G. Yaramyshev
GSI, Darmstadt, Germany

A dedicated high current uranium ion source and LEBT will be built at the GSI High Current Injector (HSI), to fulfil the intensity requirements for FAIR (Facility for Antiproton and Ion Research at Darmstadt). This new injection line will be integrated into the existing complex which already comprises two branches. The new LEBT is designed as a straight injection line without dipole magnet, i.e. without dispersive charge state separation. All uranium charge states, coming from the ion source, are transported to the heavy ion high current GSI-HSI-RFQ. Only the design charge state U⁴⁺ is accelerated to the final RFQ energy. The new LEBT design is based on beam emittance and current measurements behind the existing ion source. Beam dynamics simulations have been performed with the codes TRACE-3D (envelopes), DYNAMION, BEAMPATH and TRACK (multiparticle). The recent layout of the LEBT, as well as the results of beam dynamics studies are presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME006

Export •

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

THPME007

A Virtual Charge State Separator as an Advanced Tool Coupling Measurements and Simulations

3220

S.G. Yaramyshev, A. Adonin, W.A. Barth, L.A. Dahl, P. Gerhard, L. Groening, R. Hollinger, M.T. Maier, S. Mickat, A. Orzhekhovskaya, H. Vormann
GSI, Darmstadt, Germany

A new Low Energy Beam Transport (LEBT) for multi-charge uranium beam will be built at GSI High Current Injector. All uranium charge states coming from the new ion source will be injected into GSI heavy ion high current HSI-RFQ, but only design ions U⁴⁺ will be accelerated to the final RFQ energy. A detailed knowledge about injected beam- current and -emittance for pure design U⁴⁺ ions is necessary for a proper beam line design commissioning and operation, while the measurements are possible only for a full beam including all charge states. Detailed measurements of beam current and emittance are performed behind the first quadrupole triplet at the beam line. A dedicated algorithm, based on combination of measurements and results of an advanced beam dynamics simulations, provides for an extraction of beam- current and -emittance for only U⁴⁺ component of a beam. The obtained results and final beam dynamics design for the new straight beam line are presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME007

Export •

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