HIAT 2012 - List of Keywords (injection)

Paper	Title	Other Keywords	Page
PO09	Progress on the RFQ Beam Cooler Design for SPES Project	ion, rfq, emittance, vacuum	68
	M.M. Maggiore, F. Chiurlotto, M. Comunian, A. Dainelli, M. De Lazzari, A. Galatà, A. Minarello, A.M. Porcellato, S. Stark INFN/LNL, Legnaro (PD), Italy
	The SPES project is the new Radioactive Ion Beam facility under construction at Laboratori Nazionali of Legnaro, Italy. In this framework in order to improve the beam quality in terms of transversa emittance and energy spread, a study of a new RFQ beam cooler device is in progress. The electromagnetic design of the RFQ section and the electrostatic layout of the injection and extraction regions have been done. The study about the beam dynamic is going on by means of dedicated codes which allow to take into account the interaction of the ions with the buffer gas needed to cool the beams. The preliminary design of the device is carrying on at LNL since 2011 and the feasibility study is funded by V committee of INFN in the framework of REGATA experiment. Both beam dynamics study and the electromagnetic design are presented in this work.

PO18	Tandem EBIS	ion, electron, solenoid, extraction	101
	A.I. Pikin, J.G. Alessi, E.N. Beebe, M. Okamura, D. Raparia, J. Ritter, L. Snydstrup BNL, Upton, Long Island, New York, USA
	Funding: Work supported under the auspices of the US Department of Energy and the National Aeronautics and Space Administration. A method to increase the ion beam intensity of RHIC EBIS by extending its ion trap into magnetic field of an additional superconducting solenoid is described. The strong axial support of the cold masses in these solenoids is required to place them on a common axis close to each other. Such configuration of solenoids allows to produce a long EBIS with a single electron gun, electron collector and injection system. Preliminary calculations of magnetic forces, magnetic field and potential distributions are presented along with proposed structure of the ion traps.

TUB04	LINAC Experience In The First Two Years of Operation @ CNAO (Centro Nazionale Adroterapia Oncologica)	linac, rfq, synchrotron, proton	129
	S. Vitulli, E. Vacchieri CNAO Foundation, Milan, Italy A. Reiter, B. Schlitt GSI, Darmstadt, Germany
	CNAO is the first medical accelerator facility for deep hadrontherapy with C⁶⁺ and H³⁺ in Italy. The LINAC device at CNAO include a RFQ structure accelerating up to 400 keV/u and an IH structure works up to 7 MeV/u. Such LINAC works as injector in a 78 m circumference synchrotron where the beam reaches up to 400 MeV/u. The LINAC commissioning was performed during 2009 and from beginning of 2011, it entered into routine and continuous operation. First patient was treated in September 2011. The principal LINAC parameters are daily monitored, like output energy (by means of online not destructive ToF measurements), cavities voltage, cavities RF forward power, beam current transmission. No major faults were observed in the first two years of operation. LINAC beam is stable within an error of ±0.02 MeV/u. The relation between LINAC extraction and synchrotron injection is under investigation. This paper summarizes the monitoring issues (i.e. reproducibility of settings and beam parameters as well as long term stability measures) on the CNAO LINAC during daily patient treatments and outlines the measurements performed in the initial commissioning compared within actual status.

TUC02	KEK Digital Accelerator and Recent Beam Commissioning Result	acceleration, ion, induction, kicker	143
	K. Takayama, T. Adachi, T. Arai, D.A. Arakara, E. Kadokura, T. Kawakubo, T. Kubo, H. Nakanishi, K. Okamura, H. Someya, A. Takagi, M. Wake KEK, Ibaraki, Japan H. Asao, Y. Okada NETS, Fuchu-shi, Japan Y. Barata, S. Harada Tokyo City University, Tokyo, Japan T. Iwashita, K. Okazaki Nippon Advanced Technology Co. Ltd., Ibaraki-prefecture, Japan K.W. Leo Sokendai, Ibaraki, Japan X. Liu, T. Yoshimoto TIT, Yokohama, Japan
	The digital accelerator (DA), which is a small-scale induction synchrotron "" requiring no high-energy injector and capable of providing various ions, was constructed at KEK"". Beam commissioning has been carried out. The KEK-DA consists of a 200 kV high voltage terminal, in which a permanent mag. x-band ECRIS is embedded, 15 m long LEBT, ES injection kicker, and a 10 Hz rapid cycle synchrotron equipped with the induction acceleration system. An ion pulse chopped in 5 micro-sec by the newly developed Marx generator driven Einzel lens chopper"*" was guided through the LEBT and injected by the kicker in one turn. 3 micro-sec ion pulse was successfully captured with a pair of barrier voltage-pulses of 2 kV and accelerated up to 12 MeV with another flat induction-acceleration voltage-pulse through an acceleration period of 50 msec. Beam commissioning started with a He¹⁺ ion beam of 100 microA. Details of fully digital-controlled barrier bucket trapping and induction acceleration are described, although the acceleration/extraction is still at a preliminary stage. Some of unique applications, such as laboratory space science using virtual cosmic rays, will be introduced. K.Takayama and R.J.Briggs (Eds), “Induction Accelerators”, (Springer, 2010). T. Iwashita et al., Phys. Rev. ST-AB 14, 071301 (2011). * T.Adachi et al., Rev. Inst. Meth. 82, 083305 (2011).
	Slides TUC02 [2.126 MB]

WEB03	DREEBIT EBIS/T for Applications in Accelerator Physics	ion, ion-source, electron, target	170
	M. Schmidt, A. Thorn DREEBIT GmbH, Dresden, Germany G. Zschornack Technische Universität Dresden, Institut für Angewandte Physik, Dresden, Germany
	Funding: Supported by the European Regional Development Fund (ERDF) and the German Federal Ministry of Economics and Technology Electron Beam Ion Sources and Traps provide light up to heavy ions of low up to high charge states for various applications in accelerator physics such as medical particle therapy and charge breeding. Beside the well-known but quiet costly superconducting EBIS/T type systems compact and permanent magnet-operated EBIS/T from the DREEBIT Company are available, favorable for low-budget projects. Moreover, the "flagship" of the DREEBIT ion source family, the superconducting EBIS-SC features operating parameters comparable to the complex and expensive systems in the EBIS/T community.
	Slides WEB03 [3.655 MB]
	Poster WEB03 [7.892 MB]

WEC05	Design Studies for a New Heavy Ion Injector Linac for FAIR	linac, ion, heavy-ion, acceleration	191
	B. Schlitt, W.A. Barth, G. Clemente, W. Vinzenz GSI, Darmstadt, Germany
	As the GSI UNILAC started operation in 1975, it will be more than 40 years old when the commissioning of the future Facility for Antiproton and Ion Research (FAIR) at GSI will start. To assure reliable operation for FAIR and to provide beams for a variety of experiments, three separate linacs are proposed: 1.) A new superconducting cw heavy-ion linac behind the upgraded high charge state injector HLI shall provide ion beams with high duty cycle and adjustable energy in the MeV/u region for the super-heavy element program as well as for further UNILAC experiments. 2.) A dedicated 70 MeV proton linac will serve as injector for the FAIR pbar physics program. 3.) To deliver high-intensity heavy-ion beams for FAIR, the existing post-stripper linac should be replaced by a new high energy linac with short beam pulses, low pulse repetition rate, and fixed end energy. Conceptual design studies for the latter machine using 10⁸ MHz IH-type drift tube structures will be presented, including a proposal to increase the ion charge states for synchrotron injection as well as a linac beam energy upgrade using 325 MHz CH structures.
	Slides WEC05 [6.013 MB]

THB04	Development of the Intensity and Quality of the Heavy Ion Beams at GSI	ion, rfq, emittance, vacuum	211
	L.A. Dahl, W.A. Barth, M.C. Bellachioma, L. Groening, O.K. Kester, M.M. Kirk, D. Ondreka, N. Pyka, P.J. Spiller, J. Stadlmann, H. Vormann, S.G. Yaramyshev GSI, Darmstadt, Germany L.H.J. Bozyk, Y. El-Hayek FIAS, Frankfurt am Main, Germany C. Xiao IAP, Frankfurt am Main, Germany
	For injection into the future FAIR SIS100 synchrotron the GSI linear accelerator UNILAC and synchrotron SIS18 have to provide 1.5·1011 p/spill for the reference U²⁸⁺ beam. The MeVVa ion source extracts 37 emA of U⁴⁺ beam. For improved transmission the RFQ vanes were revised and exchanged. A new ion source terminal with straightforward beam injection into the RFQ is calculated and partly realized for loss free beam transport to the RFQ. To improve the quality of the space charge dominated beam in the DFFD periodic focussing Alvarez section a transverse 4th order resonance was investigated by simulations and experimentally. The multi turn beam injection into the SIS18 requires emittances below βγεx/βγεy=0.8/2.5 [μm]. This suggests introducing a new concept for emittance transfer by solenoidal stripping. A set-up for experimental proof of principle will be installed at the foil stripper. The SIS18 has been equipped with NEG-coated chambers for all magnets and the injection septum. Newly installed ion catchers improve especially the dynamic vacuum pressure. The effect on progress in beam quality development and intensity will be reported.
	Slides THB04 [9.809 MB]

Paper

Title

Other Keywords

Page

PO09

Progress on the RFQ Beam Cooler Design for SPES Project

ion, rfq, emittance, vacuum

68

M.M. Maggiore, F. Chiurlotto, M. Comunian, A. Dainelli, M. De Lazzari, A. Galatà, A. Minarello, A.M. Porcellato, S. Stark
INFN/LNL, Legnaro (PD), Italy

The SPES project is the new Radioactive Ion Beam facility under construction at Laboratori Nazionali of Legnaro, Italy. In this framework in order to improve the beam quality in terms of transversa emittance and energy spread, a study of a new RFQ beam cooler device is in progress. The electromagnetic design of the RFQ section and the electrostatic layout of the injection and extraction regions have been done. The study about the beam dynamic is going on by means of dedicated codes which allow to take into account the interaction of the ions with the buffer gas needed to cool the beams. The preliminary design of the device is carrying on at LNL since 2011 and the feasibility study is funded by V committee of INFN in the framework of REGATA experiment. Both beam dynamics study and the electromagnetic design are presented in this work.

PO18

Tandem EBIS

ion, electron, solenoid, extraction

101

A.I. Pikin, J.G. Alessi, E.N. Beebe, M. Okamura, D. Raparia, J. Ritter, L. Snydstrup
BNL, Upton, Long Island, New York, USA

Funding: Work supported under the auspices of the US Department of Energy and the National Aeronautics and Space Administration.
A method to increase the ion beam intensity of RHIC EBIS by extending its ion trap into magnetic field of an additional superconducting solenoid is described. The strong axial support of the cold masses in these solenoids is required to place them on a common axis close to each other. Such configuration of solenoids allows to produce a long EBIS with a single electron gun, electron collector and injection system. Preliminary calculations of magnetic forces, magnetic field and potential distributions are presented along with proposed structure of the ion traps.

TUB04

LINAC Experience In The First Two Years of Operation @ CNAO (Centro Nazionale Adroterapia Oncologica)

linac, rfq, synchrotron, proton

129

S. Vitulli, E. Vacchieri
CNAO Foundation, Milan, Italy
A. Reiter, B. Schlitt
GSI, Darmstadt, Germany

CNAO is the first medical accelerator facility for deep hadrontherapy with C⁶⁺ and H³⁺ in Italy. The LINAC device at CNAO include a RFQ structure accelerating up to 400 keV/u and an IH structure works up to 7 MeV/u. Such LINAC works as injector in a 78 m circumference synchrotron where the beam reaches up to 400 MeV/u. The LINAC commissioning was performed during 2009 and from beginning of 2011, it entered into routine and continuous operation. First patient was treated in September 2011. The principal LINAC parameters are daily monitored, like output energy (by means of online not destructive ToF measurements), cavities voltage, cavities RF forward power, beam current transmission. No major faults were observed in the first two years of operation. LINAC beam is stable within an error of ±0.02 MeV/u. The relation between LINAC extraction and synchrotron injection is under investigation. This paper summarizes the monitoring issues (i.e. reproducibility of settings and beam parameters as well as long term stability measures) on the CNAO LINAC during daily patient treatments and outlines the measurements performed in the initial commissioning compared within actual status.

TUC02

KEK Digital Accelerator and Recent Beam Commissioning Result

acceleration, ion, induction, kicker

143

K. Takayama, T. Adachi, T. Arai, D.A. Arakara, E. Kadokura, T. Kawakubo, T. Kubo, H. Nakanishi, K. Okamura, H. Someya, A. Takagi, M. Wake
KEK, Ibaraki, Japan
H. Asao, Y. Okada
NETS, Fuchu-shi, Japan
Y. Barata, S. Harada
Tokyo City University, Tokyo, Japan
T. Iwashita, K. Okazaki
Nippon Advanced Technology Co. Ltd., Ibaraki-prefecture, Japan
K.W. Leo
Sokendai, Ibaraki, Japan
X. Liu, T. Yoshimoto
TIT, Yokohama, Japan

The digital accelerator (DA), which is a small-scale induction synchrotron "*" requiring no high-energy injector and capable of providing various ions, was constructed at KEK"**". Beam commissioning has been carried out. The KEK-DA consists of a 200 kV high voltage terminal, in which a permanent mag. x-band ECRIS is embedded, 15 m long LEBT, ES injection kicker, and a 10 Hz rapid cycle synchrotron equipped with the induction acceleration system. An ion pulse chopped in 5 micro-sec by the newly developed Marx generator driven Einzel lens chopper"***" was guided through the LEBT and injected by the kicker in one turn. 3 micro-sec ion pulse was successfully captured with a pair of barrier voltage-pulses of 2 kV and accelerated up to 12 MeV with another flat induction-acceleration voltage-pulse through an acceleration period of 50 msec. Beam commissioning started with a He¹⁺ ion beam of 100 microA. Details of fully digital-controlled barrier bucket trapping and induction acceleration are described, although the acceleration/extraction is still at a preliminary stage. Some of unique applications, such as laboratory space science using virtual cosmic rays, will be introduced.
* K.Takayama and R.J.Briggs (Eds), “Induction Accelerators”, (Springer, 2010).
** T. Iwashita et al., Phys. Rev. ST-AB 14, 071301 (2011).
*** T.Adachi et al., Rev. Inst. Meth. 82, 083305 (2011).

Slides TUC02 [2.126 MB]

WEB03

DREEBIT EBIS/T for Applications in Accelerator Physics

ion, ion-source, electron, target

170

M. Schmidt, A. Thorn
DREEBIT GmbH, Dresden, Germany
G. Zschornack
Technische Universität Dresden, Institut für Angewandte Physik, Dresden, Germany

Funding: Supported by the European Regional Development Fund (ERDF) and the German Federal Ministry of Economics and Technology
Electron Beam Ion Sources and Traps provide light up to heavy ions of low up to high charge states for various applications in accelerator physics such as medical particle therapy and charge breeding. Beside the well-known but quiet costly superconducting EBIS/T type systems compact and permanent magnet-operated EBIS/T from the DREEBIT Company are available, favorable for low-budget projects. Moreover, the "flagship" of the DREEBIT ion source family, the superconducting EBIS-SC features operating parameters comparable to the complex and expensive systems in the EBIS/T community.

Slides WEB03 [3.655 MB]

Poster WEB03 [7.892 MB]

WEC05

Design Studies for a New Heavy Ion Injector Linac for FAIR

linac, ion, heavy-ion, acceleration

191

B. Schlitt, W.A. Barth, G. Clemente, W. Vinzenz
GSI, Darmstadt, Germany

As the GSI UNILAC started operation in 1975, it will be more than 40 years old when the commissioning of the future Facility for Antiproton and Ion Research (FAIR) at GSI will start. To assure reliable operation for FAIR and to provide beams for a variety of experiments, three separate linacs are proposed: 1.) A new superconducting cw heavy-ion linac behind the upgraded high charge state injector HLI shall provide ion beams with high duty cycle and adjustable energy in the MeV/u region for the super-heavy element program as well as for further UNILAC experiments. 2.) A dedicated 70 MeV proton linac will serve as injector for the FAIR pbar physics program. 3.) To deliver high-intensity heavy-ion beams for FAIR, the existing post-stripper linac should be replaced by a new high energy linac with short beam pulses, low pulse repetition rate, and fixed end energy. Conceptual design studies for the latter machine using 10⁸ MHz IH-type drift tube structures will be presented, including a proposal to increase the ion charge states for synchrotron injection as well as a linac beam energy upgrade using 325 MHz CH structures.

Slides WEC05 [6.013 MB]

THB04

Development of the Intensity and Quality of the Heavy Ion Beams at GSI

ion, rfq, emittance, vacuum

211

L.A. Dahl, W.A. Barth, M.C. Bellachioma, L. Groening, O.K. Kester, M.M. Kirk, D. Ondreka, N. Pyka, P.J. Spiller, J. Stadlmann, H. Vormann, S.G. Yaramyshev
GSI, Darmstadt, Germany
L.H.J. Bozyk, Y. El-Hayek
FIAS, Frankfurt am Main, Germany
C. Xiao
IAP, Frankfurt am Main, Germany

For injection into the future FAIR SIS100 synchrotron the GSI linear accelerator UNILAC and synchrotron SIS18 have to provide 1.5·1011 p/spill for the reference U²⁸⁺ beam. The MeVVa ion source extracts 37 emA of U⁴⁺ beam. For improved transmission the RFQ vanes were revised and exchanged. A new ion source terminal with straightforward beam injection into the RFQ is calculated and partly realized for loss free beam transport to the RFQ. To improve the quality of the space charge dominated beam in the DFFD periodic focussing Alvarez section a transverse 4th order resonance was investigated by simulations and experimentally. The multi turn beam injection into the SIS18 requires emittances below βγεx/βγεy=0.8/2.5 [μm]. This suggests introducing a new concept for emittance transfer by solenoidal stripping. A set-up for experimental proof of principle will be installed at the foil stripper. The SIS18 has been equipped with NEG-coated chambers for all magnets and the injection septum. Newly installed ion catchers improve especially the dynamic vacuum pressure. The effect on progress in beam quality development and intensity will be reported.

Slides THB04 [9.809 MB]