Status report of the development of a multi-mA self-extracted H[sup +]-beam cyclotron

Lucas, Stéphane; Kleeven, W.; Abs, M.; Poncelet, E.; Jongen, Y.

doi:10.1063/1.1395404

Cited by 3 publications

(6 citation statements)

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“…The extraction of the beam is obtained by creating a turn-separation at the entrance of the groove by the use of harmonic extraction coils (precessional extraction, figure 1-2). This differs from what has been presented in [3].…”

Section: Basic Designcontrasting

confidence: 99%

“…The cavities design is classical (figure 1-5) with vertical symmetry and dee stem located close to the central region. The RF chain involves a 3 steps amplifier with a final power of 200 kW as described in [3].…”

Section: Basic Designmentioning

confidence: 99%

“…An experimental beam line described in [3] was put in place for the first tests. The total length of a beam line from the cyclotron to both targets is about 9 meters.…”

Section: Beam Line Layoutmentioning

confidence: 99%

“…Self-extraction was already experimentally observed on the IBA 230 MeV protontherapy cyclotron, where there was some beam intensity present in the extracted beam line even when the deflector was removed from the machine. Encouraged by these experiences and their agreement with computer simulations of the self-extraction principle, IBA started in 1998 the construction of a high intensity self-extracting cyclotron [2,3,4].…”

Section: Introductionmentioning

confidence: 99%

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Current performance of the self-extracting cyclotron

Lucas¹

2003

AIP Conference Proceedings

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The self-extracting cyclotron is a 14MeV multi-mA H+ machine from which the beam extracts without a deflector. The development of this prototype has started in 1998, and has now reached a point such that IBA considers to use it as a production machine. It is now installed in an irradiation facility and is equipped with two beam lines and two high power target-system. Beams of more than 1 mA have been extracted and transported to targets Further development is ongoing in order to increase the current on target to at least 2 mA in the coming months. Commercial isotope production will start at the end of this year. This paper will describe the current configuration of the cyclotron and the associated performances. Emphases will be put on reliability and associated problems, beam optics and performances of subsystems .

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Section: Basic Designcontrasting

confidence: 99%

Section: Basic Designmentioning

confidence: 99%

“…An experimental beam line described in [3] was put in place for the first tests. The total length of a beam line from the cyclotron to both targets is about 9 meters.…”

Section: Beam Line Layoutmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Current performance of the self-extracting cyclotron

Lucas¹

2003

AIP Conference Proceedings

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“…Activation was performed with a 14 MeV high current (2 mA) selfextracting cyclotron [1,2] equipped with a beam line and a special targetry consisting of a rectangular rhodium wire (50 mm Â 200 mm) wrapped around a rotating water-cooled drum. The protons hit the 200 mm face at an angle of 91 and pass through the Rh wire with an exit energy of about 6 MeV.…”

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confidence: 99%

Radioactive Rh wire as a source for new nanomaterials

Lucas

Hofferlin

2007

Nuclear Instruments and Methods in Physics Research Section A:

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The self-extracting cyclotron

Kleeven¹,

Lucas²,

Zaremba³

et al. 2001

AIP Conference Proceedings

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At IBA a compact 14 MeV H+ cyclotron has been constructed. A special feature of this cyclotron is that there is no electrical deflector installed, i.e. the beam is selfextracted. The goal is to obtain high beam currents with good extraction efficiency without the need of single turn extraction. This is achieved with two ingredients: i) a special shaping of the magnetic field, showing a very steep fall-off near the outer radius of the pole and ii) the creation of a lar ge turn-separation on the last turn. The pole gap has a quasi-elliptical shape, allowing for the steep fall-off of the magnetic field by the machining of a groove in one of the poles at a radius where the gap is small. The lar ge turn separation is obtained by either the use of harmonic coils or by permanent magnet field bumps placed in two opposite valleys. Both methods have been tested and give good results with an extraction efficiency of 80 %. The concept and layout of the machine is explained. The status of the project is outlined. First results of beam tests are presented. The cyclotron is intended for medical isotope production at multi-mAbeam intensity.

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Status report of the development of a multi-mA self-extracted H[sup +]-beam cyclotron

Cited by 3 publications

References 0 publications

Current performance of the self-extracting cyclotron

Current performance of the self-extracting cyclotron

Radioactive Rh wire as a source for new nanomaterials

The self-extracting cyclotron

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