IBIC2013 - List of Keywords (ion-source)

Paper	Title	Other Keywords	Page
TUPC26	Beam-line Diagnostics at the Front End Test Stand (FETS), Rutherford Appleton Laboratory, Oxfordshire, UK	BPM, linac, rfq, emittance	431
	G.E. Boorman, S.M. Gibson Royal Holloway, University of London, Surrey, United Kingdom G.E. Boorman, S.M. Gibson JAI, Egham, Surrey, United Kingdom R.T.P. D'Arcy, S. Jolly UCL, London, United Kingdom C. Gabor STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom S.R. Lawrie, A.P. Letchford STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
	The H⁻ ion source and beam-line at FETS will require the beam current and beam position to be continually monitored. Current transformer toroids will measure the beam current and beam position monitors (BPM) will determine the beam position. The ion source delivers pulses at a rate of 50Hz with a current up to 60mA, each pulse is 2ms long, and a 324MHz micro-bunch structure imposed by the radio frequency quadrapole (RFQ) accelerating structure. The toroid outputs will be acquired on a fast oscilloscope. The BPM design is still under consideration (shorted strip-line or button type) but the processing for both types is similar and has been designed, with simulated measurements made. Each BPM uses four pickups, at a frequency of 324MHz, which are mixed using RF electronics to an intermediate frequency of 10.125MHz. The resulting signals are then digitized at 40.500MHz and processed in an FPGA to produce the position and phase of the beam at each BPM location, with a precision of better than 100μm and 0.05rad. The measurements from the toroids and BPMs will be via EPICS servers at every pulse.
	Poster TUPC26 [0.660 MB]

TUPF06	2D Wire Grid Integrated with Faraday Cup for Low Energy H⁻ Beam Analysis at Siemens Novel Electrostatic Accelerator	ion, electron, simulation, plasma	507
	H. von Jagwitz-Biegnitz JAI, Oxford, United Kingdom P. Beasley, O. Heid Siemens AG, Erlangen, Germany D.C. Faircloth STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom A.J. Holmes Marcham Scientific Ltd, Hungerford, United Kingdom R.G. Selway Inspired Engineering Ltd, Climping, United Kingdom
	A wire grid with 21 wires each vertically and horizontally with a spacing of 1 mm has been developed for beam analysis at Siemens' novel electrostatic accelerator. The wire grid is integrated in a Faraday Cup and profile measurements can therefore be combined with current measurements. The grid is used to analyse the 10 keV H⁻ beam coming from the ion source and the obtained beam parameters will be used as input for simulations of the beam transport in the accelerator. All 42 wires can be read out simultaneously with a multi-channel precision electrometer and the data can be fitted instantly with LabVIEW code that was developed for this purpose. This paper reports on some details of the mechanical design and the data analysis procedure in LabVIEW as well as some results of first measurements at the novel accelerator.

TUPF10	A Non-Intercepting Beam Emittance Measurement Device Based on Neutral Beam Fluorescence Method at PKU	emittance, ion, transverse, dipole	522
	S.X. Peng, J. Chen, Z.Y. Guo, H.T. Ren, Y. Xu, J. Zhao PKU, Beijing, People's Republic of China J.E. Chen, A.L. Zhang Graduate University, Chinese Academy of Sciences, Beijing, People's Republic of China L.T. Sun, H.W. Zhao IMP, Lanzhou, People's Republic of China
	A new concept to attain ion beam emmitance through measuring the forward neutral beam without intercepting the beam transportion was proposed at PKU. The forward neutral beam produced by space charge compensation and separated from the transporting ion beam with the help of a deflecting magnetic field, carries the entire emittance information of the original particle beam and becomes a fast and non-interceptive beam diagnostic tool. This idea was tested on PKU ion source test bench and the experimental results show that the neutral beam fluorescence method is feasible. Bases on these qualification results, a formal non-intercepting emittance measurement device was designed. It is a 90 degree full-scale dipole analysis magnet combining with the classical pepper-pot technique. Test and commissioning of the device are in progress. Details of design and comnissioning results will be presented in this paper.

WEPC02	Project PROMETHEUS: Design and Construction of a Radio Frequency Quadrupole at TAEK	rfq, ion, quadrupole, diagnostics	652
	G. Turemen, B. Yasatekin Ankara University, Faculty of Sciences, Ankara, Turkey Y. Akgun, A. Alacakir, A.S. Bolukdemir, E. Durukan, H. Karadeniz, E. Recepoğlu TAEK, Ankara, Turkey E. Cavlan TOBB ETU, Ankara, Turkey M. Celik, Z. Sali Gazi University, Faculty of Arts and Sciences, Teknikokullar, Ankara, Turkey S. Erhan UCLA, Los Angeles, California, USA Ö. Mete UMAN, Manchester, United Kingdom G. Unel UCI, Irvine, California, USA
	The PROMETHEUS Project is ongoing for the design and development of a 4-vane radio frequency quadrupole (RFQ) with its H⁺ ion source, a low energy beam transport (LEBT) line and diagnostics section. The main goal of the project is to achieve the acceleration of the low energy ions up to 1.5 MeV by an RFQ (352 MHz) shorter than 2 m. A plasma ion source is being developed to produce a 20 keV, 1 mA H⁺ beam. Ion source, transmission and beam dynamics in the RFQ are discussed through simulation results. In addition, analytical studies were also performed resulting into an RFQ design code, DEMIRCI as discussed and presented here in comparison with various existing software. As a result of the simulations, beam transmission of 99% was achieved at 1.7 m downstream reaching energy of 1.5 MeV. As the first phase an Aluminum RFQ prototype, the so-called cold model, will be built for low power RF characterization. In this contribution the status of the project, design considerations, simulation results, the various diagnostics techniques and RFQ fabrication issues are discussed.
	Poster WEPC02 [25.664 MB]

WEPC04	Beam Diagnostics for Commissioning and Operation of a Novel Compact Cyclotron for Radioisotope Production	diagnostics, cyclotron, ion, target	660
	I. Podadera, B. Ahedo, P. Arce, L. García-Tabarés, D. Gavela, A. Guirao, J.I. Lagares, L.M. Martinez, D. Obradors-Campos, C. Oliver, J.M. Perez Morales, F. Sansaloni, F. Toral CIEMAT, Madrid, Spain
	Funding: Work partially funded by the CDTI and supported by the Spanish Ministry of Science and Innovation under project AMIT, within the subprogramme CENIT-2009. The AMIT cyclotron will be a 8.5 MeV, 10 μA CW H⁻ accelerator which aims to deliver a beam for radioisotope production. In order to properly validate all the beam commissioning steps, a set of diagnostics needs to be implemented. They must cover all the commissioning phases: ion source characterization, medium energy acceleration and nominal energy at full current. Due to compactness of the design, the number of beam diagnostics is limited and restricted to the most essential ones during operation. An overview of the diagnostics that are planned for the characterization of the cyclotron will be discussed in this contribution. In all the commissioning phases, beam current probes are essential to validate the cyclotron and each subsystem. As a main diagnostic, a moveable probe has been designed and simulated for optimization of the cyclotron. The thermal simulations of the probe and the mechanical integration will be presented.

Paper

Title

Other Keywords

Page

TUPC26

Beam-line Diagnostics at the Front End Test Stand (FETS), Rutherford Appleton Laboratory, Oxfordshire, UK

BPM, linac, rfq, emittance

431

G.E. Boorman, S.M. Gibson
Royal Holloway, University of London, Surrey, United Kingdom
G.E. Boorman, S.M. Gibson
JAI, Egham, Surrey, United Kingdom
R.T.P. D'Arcy, S. Jolly
UCL, London, United Kingdom
C. Gabor
STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
S.R. Lawrie, A.P. Letchford
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom

The H⁻ ion source and beam-line at FETS will require the beam current and beam position to be continually monitored. Current transformer toroids will measure the beam current and beam position monitors (BPM) will determine the beam position. The ion source delivers pulses at a rate of 50Hz with a current up to 60mA, each pulse is 2ms long, and a 324MHz micro-bunch structure imposed by the radio frequency quadrapole (RFQ) accelerating structure. The toroid outputs will be acquired on a fast oscilloscope. The BPM design is still under consideration (shorted strip-line or button type) but the processing for both types is similar and has been designed, with simulated measurements made. Each BPM uses four pickups, at a frequency of 324MHz, which are mixed using RF electronics to an intermediate frequency of 10.125MHz. The resulting signals are then digitized at 40.500MHz and processed in an FPGA to produce the position and phase of the beam at each BPM location, with a precision of better than 100μm and 0.05rad. The measurements from the toroids and BPMs will be via EPICS servers at every pulse.

Poster TUPC26 [0.660 MB]

TUPF06

2D Wire Grid Integrated with Faraday Cup for Low Energy H⁻ Beam Analysis at Siemens Novel Electrostatic Accelerator

ion, electron, simulation, plasma

507

H. von Jagwitz-Biegnitz
JAI, Oxford, United Kingdom
P. Beasley, O. Heid
Siemens AG, Erlangen, Germany
D.C. Faircloth
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
A.J. Holmes
Marcham Scientific Ltd, Hungerford, United Kingdom
R.G. Selway
Inspired Engineering Ltd, Climping, United Kingdom

A wire grid with 21 wires each vertically and horizontally with a spacing of 1 mm has been developed for beam analysis at Siemens' novel electrostatic accelerator. The wire grid is integrated in a Faraday Cup and profile measurements can therefore be combined with current measurements. The grid is used to analyse the 10 keV H⁻ beam coming from the ion source and the obtained beam parameters will be used as input for simulations of the beam transport in the accelerator. All 42 wires can be read out simultaneously with a multi-channel precision electrometer and the data can be fitted instantly with LabVIEW code that was developed for this purpose. This paper reports on some details of the mechanical design and the data analysis procedure in LabVIEW as well as some results of first measurements at the novel accelerator.

TUPF10

A Non-Intercepting Beam Emittance Measurement Device Based on Neutral Beam Fluorescence Method at PKU

emittance, ion, transverse, dipole

522

S.X. Peng, J. Chen, Z.Y. Guo, H.T. Ren, Y. Xu, J. Zhao
PKU, Beijing, People's Republic of China
J.E. Chen, A.L. Zhang
Graduate University, Chinese Academy of Sciences, Beijing, People's Republic of China
L.T. Sun, H.W. Zhao
IMP, Lanzhou, People's Republic of China

A new concept to attain ion beam emmitance through measuring the forward neutral beam without intercepting the beam transportion was proposed at PKU. The forward neutral beam produced by space charge compensation and separated from the transporting ion beam with the help of a deflecting magnetic field, carries the entire emittance information of the original particle beam and becomes a fast and non-interceptive beam diagnostic tool. This idea was tested on PKU ion source test bench and the experimental results show that the neutral beam fluorescence method is feasible. Bases on these qualification results, a formal non-intercepting emittance measurement device was designed. It is a 90 degree full-scale dipole analysis magnet combining with the classical pepper-pot technique. Test and commissioning of the device are in progress. Details of design and comnissioning results will be presented in this paper.

WEPC02

Project PROMETHEUS: Design and Construction of a Radio Frequency Quadrupole at TAEK

rfq, ion, quadrupole, diagnostics

652

G. Turemen, B. Yasatekin
Ankara University, Faculty of Sciences, Ankara, Turkey
Y. Akgun, A. Alacakir, A.S. Bolukdemir, E. Durukan, H. Karadeniz, E. Recepoğlu
TAEK, Ankara, Turkey
E. Cavlan
TOBB ETU, Ankara, Turkey
M. Celik, Z. Sali
Gazi University, Faculty of Arts and Sciences, Teknikokullar, Ankara, Turkey
S. Erhan
UCLA, Los Angeles, California, USA
Ö. Mete
UMAN, Manchester, United Kingdom
G. Unel
UCI, Irvine, California, USA

The PROMETHEUS Project is ongoing for the design and development of a 4-vane radio frequency quadrupole (RFQ) with its H⁺ ion source, a low energy beam transport (LEBT) line and diagnostics section. The main goal of the project is to achieve the acceleration of the low energy ions up to 1.5 MeV by an RFQ (352 MHz) shorter than 2 m. A plasma ion source is being developed to produce a 20 keV, 1 mA H⁺ beam. Ion source, transmission and beam dynamics in the RFQ are discussed through simulation results. In addition, analytical studies were also performed resulting into an RFQ design code, DEMIRCI as discussed and presented here in comparison with various existing software. As a result of the simulations, beam transmission of 99% was achieved at 1.7 m downstream reaching energy of 1.5 MeV. As the first phase an Aluminum RFQ prototype, the so-called cold model, will be built for low power RF characterization. In this contribution the status of the project, design considerations, simulation results, the various diagnostics techniques and RFQ fabrication issues are discussed.

Poster WEPC02 [25.664 MB]

WEPC04

Beam Diagnostics for Commissioning and Operation of a Novel Compact Cyclotron for Radioisotope Production

diagnostics, cyclotron, ion, target

660

I. Podadera, B. Ahedo, P. Arce, L. García-Tabarés, D. Gavela, A. Guirao, J.I. Lagares, L.M. Martinez, D. Obradors-Campos, C. Oliver, J.M. Perez Morales, F. Sansaloni, F. Toral
CIEMAT, Madrid, Spain

Funding: Work partially funded by the CDTI and supported by the Spanish Ministry of Science and Innovation under project AMIT, within the subprogramme CENIT-2009.
The AMIT cyclotron will be a 8.5 MeV, 10 μA CW H⁻ accelerator which aims to deliver a beam for radioisotope production. In order to properly validate all the beam commissioning steps, a set of diagnostics needs to be implemented. They must cover all the commissioning phases: ion source characterization, medium energy acceleration and nominal energy at full current. Due to compactness of the design, the number of beam diagnostics is limited and restricted to the most essential ones during operation. An overview of the diagnostics that are planned for the characterization of the cyclotron will be discussed in this contribution. In all the commissioning phases, beam current probes are essential to validate the cyclotron and each subsystem. As a main diagnostic, a moveable probe has been designed and simulated for optimization of the cyclotron. The thermal simulations of the probe and the mechanical integration will be presented.