Dr
Emma Pearson
(IBA), Dr
Willem Kleeven
(IBA)
11/05/2012, 11:10
Poster
One of the important concerns in the development of a synchrocyclotron for clinical use is the predictability and accuracy of the beam pulse. During studies of the longitudinal motion in the S2C2 we have observed that protons falling out of the RF bucket but not lost, may regain stable oscillations around a subsequent synchronous particle and hence be recaptured in a later beam pulse. Such a...
Mr
Antonino CARUSO
(INFN-LNS)
11/05/2012, 11:10
Poster
One single compact rack includes: Direct Digital Synthesizer generator, turn-on and protection system. The system synthesizes a high stable RF signal up to 120 MHz, turns the power on into the RF cavities through a step-ramp modulator, protects the RF system against mismatching, sparks and multipactoring. A first prototype has been designed, assembled and tested on the RF system of the k-800...
Dr
Oleg Borisov
(JINR)
11/05/2012, 11:10
Poster
The heavy ion beams Ar,Kr and Xe with fixed energy 2.5 MeV/amu extracted from DC110 cyclotron. The beam extraction is performed by an electrostatic deflector placed in the valley. In order to compensate the radial beam defocusing caused by the high gradient of the frigging magnetic field passive magnetic channel, located in hill, are used. The parameters of extraction system elements...
Dr
Willem Kleeven
(IBA)
11/05/2012, 11:10
Poster
During the development of the new S2C2 at IBA, it was found that the axial field harmonics may have an impcat on the machine performance. Due to the compactness of the machine, outside elements such as magnetic shielding (for cryo-coolers and rotco), the external beam line, and the yoke-lifting system, have an influence on the median plane field inside the synchrocyclotron itself. This is...
Dr
Michel Abs
(IBA), Dr
Willem Kleeven
(IBA)
11/05/2012, 11:30
Poster
IBA is currently investigating asymmetric RF cavities for some of its PET cyclotrons. Those cavities will only occupy two upper pumping holes with dee-stems and outer cavity walls. The corresponding two lower pumping holes will be empty. The advantages of such a configuration are: i) The four oil diffusion pumps mounted underneath the cyclotron are more efficient, ii) the cavities become...
Dr
Jarno Van de Walle
(Ion Beam Applications)
11/05/2012, 11:30
Poster
A new mapping system for the Super Conducting Synchro Cyclotron (S2C2) was developed at IBA. One of the major differences with existing mapping systems at IBA is the replacement of the Hall probe by a search coil. In the S2C2, the field ranges from 4.6 to 5.7 T and large field gradients exist in the extraction region (the regenerator). These gradients should be measured with high precision in...
Dr
Willem Kleeven
(IBA)
11/05/2012, 11:30
Poster
The S2C2 is the new compact protontherapy accelerator for the IBA ProteusOne range of products. It is the first synchrocyclotron as well as the first superconducting cyclotron ever produced at IBA. In this communication, a study is presented of the forces that are acting on the accelerating structure (dees and liner) due to the eddy currents that would be induced in these copper structures by...
Dr
Willem Kleeven
(IBA)
11/05/2012, 11:30
Poster
The S2C2 is the new compact proton-therapy accelerator for the IBA ProteusOne range of products. It is the first synchrocyclotron as well as the first superconducting cyclotron ever produced at IBA.
During the commissioning of the S2C2 it is intended to move the main coil assembly in the cryostat into an optimum position such that the overall effect of the median plane error during...
Dr
Eric Forton
(IBA), Dr
Willem Kleeven
(IBA)
11/05/2012, 11:30
Poster
The S2C2 is the new compact proton-therapy accelerator for the IBA ProteusOne range of products. It is the first synchrocyclotron as well as the first superconducting cyclotron ever produced at IBA.
A study is made of the median plane error in the S2C2 due to the vertical asymmetry in the magnetic structure. A full OPERA3D model is used to calculate the magnetic field error. The main coils...
Dr
Vincent Nuttens
(IBA)
11/05/2012, 11:50
Poster
IBA developed an evolution of its well-known Cyclone 30 cyclotron. The Cyclone 30XP is a multi-particle, multiport cyclotron capable of accelerating alpha particles up to 30 MeV (electrostatic extraction), deuteron (D-) beams between 7.5 and 15 MeV and proton (H-) beams between 15 and 30 MeV (stripping extraction). The cyclotron injection line, based on the Cyclone 70 design, has different...
Dr
Willem Kleeven
(IBA)
11/05/2012, 11:50
Poster
The S2C2 is the new compact proton-therapy accelerator for the IBA ProteusOne range of products. It is the first synchrocyclotron as well as the first superconducting cyclotron ever produced at IBA.
In this communication a study is made of the deteriorating effect of a first harmonic field error due to the r=1 resonance in the S2C2, thereby taking into account the acceleration process. It is...
Mr
Benoît Nactergal
(IBA)
11/05/2012, 11:50
Poster
During these 2 last years, IBA developed and proposed two new versions of its famous Cyclone 30: the Cyclone 30HC, which is a high current version able to accelerate up to 1.2 mA at 30 MeV, and the Cyclone 30XP, which is a multi-particle version (proton-deuterons and alphas), inspired by the Cyclone 70 XP.
During the last months, the high current version successfully completed the site...
Mr
Michem Abs
(IBA)
11/05/2012, 11:50
Poster
Modern electromagnetic computation codes, together with the help of last generation of computers, open new doors for RF design.
A calculation code like CST Microwave Studio®, thanks to its Frequency Domain Solver, is able to calculate S matrix between ports over a given frequency band. In addition, the tetrahedral curved meshing is then able to define accurately very small volumes inside very...
Dr
Emma Pearson
(IBA), Dr
Willem Kleeven
(IBA)
11/05/2012, 12:10
Poster
During the development of a synchrocyclotron the RF-frequency and voltage behavior during the pulse must be specified. The efficiency of capturing injected ions into the RF-bucket and also the stability of the RF bucket size during the acceleration depend on this. It is possible to study these processes with a full 3-D tracking code but such calculations are complex and time-consuming.
The...
Mr
Christoph Kunert
(Helmholtz-Zentrum Berlin)
11/05/2012, 12:10
Poster
The isochronous cyclotron at HZB is mainly used for providing a proton beam of 68MeV for the eye tumor therapy, which is conducted in cooperation with the Charité Berlin. The existing possibilities to produce a time structured beam, as well as the in-house developed testing instrumentation, will be shown in this poster. Our accelerating facility can generate pulse structures of a high...
Mr
Michel Abs
(IBA), Mr
Patrick Verbruggen
(IBA)
11/05/2012, 12:10
Poster
IBA is currently developing a compact superconducting synchro-cyclotron intended for a low cost, single room proton therapy treatment system called Proteus One. The RF system of such a machine is challenging to optimize when compared with a fixed frequency isochronous cyclotron RF system.
During acceleration, the RF cavity resonating frequency must be varying from 90MHz to 60MHz. This is...
Daniel van Rooyen
(The Svedberg Laboratory),
M Lindberg
(The Svedberg Laboratory)
11/05/2012, 12:10
Poster
TSL has a long history of producing beams of accelerated particles. The laboratory was restructured in 2005/2006 with nuclear physics phased out, the CELSIUS ring dismantled and the WASA detector moved to Jülich. The focus of activities became thereby shifted towards, mainly, proton therapy and, in addition, radiation effects testing using protons and neutrons in a beam sharing mode. The...
Dr
Ivan Ivanenko
(JINR)
11/05/2012, 12:10
Poster
Using the magnetic channel in the beam extraction system causes perturbation in the cyclotron magnetic field. As a result the radial magnetic field distribution changes and the first harmonic of the magnetic field appears. The procedure of compensation of the magnetic channel influence is presented by the example of the formation of the DC-110 cyclotron magnetic field. The calculation results...
