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Accueil > Recherche & Enseignement

M. Jean-Marc Fontbonne


Ingénieur de recherche CNRS


Groupe : Applications industrielles et médicales


fontbonne lpccaen.in2p3.fr


Tel : +33 2 31 45 25 26


 



PUBLICATIONS

[in2p3-01347982] Characterization and performances of DOSION, a dosimetry equipment dedicated to radiobiology experiments taking place at GANIL

17 mars 2017

Currently,radiobiology experiments using heavy ions at GANIL GrandAccélérateurNationald’IonsLourds) are conducted under the supervision of the CIMAP (Center for research on Ions, MAterials and Photonics). In this context, a new beam monitoring equipment named DOSION has been developed. It allows (...)

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[in2p3-01170130] Scintillation properties of N2 and CF4 and performances of a scintillating ionization chamber

5 janvier 2016

In this work, we studied the emission yields, decay times and coincidence resolving times (CRT) of two gases, nitrogen (N2) and tetrafluoromethane (CF4), used for particle detection in the context of fission products measurement. The setup was made of an ionization chamber and two (...)

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[in2p3-00839436] Characterization and performances of a monitoring ionization chamber dedicated to IBA-universal irradiation head for Pencil Beam Scanning

30 juin 2015

Every radiotherapy center has to be equipped with real-time beam monitoring devices. In 2008, the medical application group from the Laboratory of Corpuscular Physics (LPC Caen) developed an Ionization Chamber in collaboration with the company IBA (Ion Beam Applications). This monitoring device (...)

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Simulation study on light ions identification methods for carbon beams from 95 to 400 MeV/A

1er octobre 2013

Monte Carlo simulations have been performed in order to evaluate the efficiencies of several light ions identification techniques. The detection system was composed with layers of scintillating material to measure either the deposited energy or the time-of-flight of ions produced by nuclear (...)

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Characterization and performances of a monitoring ionization chamber dedicated to IBA-universal irradiation head for Pencil Beam Scanning

28 juin 2013

Every radiotherapy center has to be equipped with real-time beam monitoring devices. In 2008, the medical application group from the Laboratory of Corpuscular Physics (LPC Caen) developed an Ionization Chamber in collaboration with the company IBA (Ion Beam Applications). This monitoring device (...)

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Characterization and performances of a monitoring ionization chamber dedicated to IBA-universal irradiation head for Pencil Beam Scanning

18 juin 2013

Every radiotherapy center has to be equipped with real-time beam monitoring devices. In 2008, the medical application group from the Laboratory of Corpuscular Physics (LPC Caen) developed an Ionization Chamber in collaboration with the company IBA (Ion Beam Applications). This monitoring device (...)

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[in2p3-00829487] Double differential fragmentation cross-section measurements of 95 MeV/u 12C on thin targets for hadrontherapy

3 juin 2013

During therapeutic treatment with heavy ions like carbon, the beam undergoes nuclear fragmentation and secondary light charged particles, in particular protons and alpha particles, are produced. To estimate the dose deposited into the tumors and the surrounding healthy tissues, an accurate (...)

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Dispositif et procédé d'inspection d'un faisceau ionisant

30 mai 2013

La présente invention concerne un dispositif d'inspection d'un faisceau avec: une tête d'inspection (110) comprenant un scintillateur (114) et au moins un bloc diffuseur (116, 117) associé au scintillateur, un premier moyen (118) de formation d'au moins une image d'au moins une partie de la tête (...)

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Procédé de mesure de dose d'irradiation par un faisceau d'un rayonnement ionisant susceptible de créer du rayonnement Cerenkov

30 mai 2013

L'invention concerne un procédé de mesure de dose d'irradiation par un faisceau d'un rayonnement à haute énergie, dans lequel on dispose sous ce faisceau, un scintillateur (1) pour émettre une lumière de scintillation dont l'intensité est fonction de la dose de ce faisceau irradiant ce scintillateur (...)

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DOSIMAP: a high-resolution 2-D tissue equivalent dosemeter for linac QA and IMRT verification

16 mai 2013

New generation of radiation therapy accelerators requires highly accurate dose measurements with high spatial resolution patterns. IMRT is especially demanding since the positioning accuracy of all the multi-leafs should be verified for each applied field and at any incidence. A new 2-D tissue (...)

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Nuclear Fragmentation Measurements for Hadrontherapy: 95MeV/u 12C Reactions on H, C, Al, O and nat Ti Targets

30 avril 2013

The interest for hadrontherapy, the use of ion beams for the treatments of cancerous tumors, is increasing. This can be attributed to the great accuracy of ion beams to target the tumor while sparing the surrounding healthy tissues (due to the high dose deposition in the Bragg peak and the (...)

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[in2p3-00806234] Comparison of two analysis methods for nuclear reaction measurements of 12C +12C interactions at 95 MeV/u for hadrontherapy

29 mars 2013

During therapeutic treatment with heavier ions like carbon, the beam undergoes nuclear fragmentation and secondary light charged particles, in particular protons and alpha particles, are produced. To estimate the dose deposited into the tumors and the surrounding healthy tissues, the accuracy (...)

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Contrôle faisceau en radiothérapie & hadronthérapie

27 mars 2013

Les techniques de radiothérapie externe ont beaucoup évolué ces vingt dernières années. Pour les photons, le développement d'outils comme les collimateurs multilames, de machines comme le cyberknife ou la tomothérapie, ont permis d'améliorer la conformation des traitements au volume tumoral et de (...)

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Nuclear Fragmentation Measurements for Hadrontherapy: 95MeV/u 12C Reactions on H, C, Al, O and natTi Targets

5 mars 2013

The interest for hadrontherapy, the use of ion beams for the treatments of cancerous tumors, is increasing. This can be attributed to the great accuracy of ion beams to target the tumor while sparing the surrounding healthy tissues (due to the high dose deposition in the Bragg peak and the (...)

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Neutron and charged particle identification by means of various detectors

11 septembre 2012

Identification methods for photons, neutrons and heavy ions by using scintillator and semiconductor detectors are discussed by stressing the advantages of signal digitization.

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Characterization of a detection system for an anthropomorphic phantom designed to measure the effective dose for photon fields

28 février 2012

The Laboratory of Dosimetry for Ionizing Radiation at the Institute for Radiological Protection and Nuclear Safety in France is developing an instrumented anthropomorphic dummy to evaluate the effective dose for photon fields in workplaces. This anthropomorphic phantom will be equipped (...)

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Nuclear Physics and Hadron Therapy

17 février 2012

Hadron therapy uses light charged particles beams (mainly proton and 12C ions) to irradiate tumors. These beams present a ballistic advantage with a maximum energy deposition at the end of the path. A large dose can be delivered inside a deep tumor while the surrounding healthy tissues are (...)

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Beam diagnostic overview of the SPIRAL2 RNB section

21 septembre 2011

An extension to the existing GANIL facility in Caen, France is under construction. The new SPIRAL 2 construction will be realized in two phases, for the first phase the construction started in January 2011 and will consists of the accelerator buildings with two experimental facilities S3 and (...)

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Beam diagnostic overview of the SPIRAL2 RNB section

21 septembre 2011

An extension to the existing GANIL facility in Caen, France is under construction. The new SPIRAL 2 construction will be realized in two phases, for the first phase the construction started in January 2011 and will consists of the accelerator buildings with two experimental facilities S3 and (...)

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Nuclear reaction measurements of 95MeV/u 12C interactions on PMMA for hadrontherapy

6 septembre 2011

The ion dose deposition in tissues is characterized by a favorable depth dose profile (i.e. Bragg peak) and a small lateral spread. In order to keep these benefits of ions in cancer treatments, a very high accuracy is required on the dose deposition (±3%). For given target stoechiometry and (...)

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[in2p3-00619633] Nuclear reaction measurements of 95MeV/u 12C interactions on PMMA for hadrontherapy

6 septembre 2011

The ion dose deposition in tissues is characterized by a favorable depth dose profile (i.e. Bragg peak) and a small lateral spread. In order to keep these benefits of ions in cancer treatments, a very high accuracy is required on the dose deposition (±3%). For given target stoechiometry and (...)

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Effective dose measurement at workplaces within an instrumented anthropomorphic phantom

26 avril 2011

The Laboratory of Ionizing Radiation Dosimetry of the IRSN (France) is developing an instrumented anthropomorphic phantom in order to measure the effective dose for photon fields at workplaces. This anthropomorphic phantom will be equipped with small active detectors located inside at chosen (...)

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[in2p3-00588785] Effective dose measurement at workplaces within an instrumented anthropomorphic phantom

26 avril 2011

The Laboratory of Ionizing Radiation Dosimetry of the IRSN (France) is developing an instrumented anthropomorphic phantom in order to measure the effective dose for photon fields at workplaces. This anthropomorphic phantom will be equipped with small active detectors located inside at chosen (...)

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Measurement of the 8Li half-life

30 août 2010

We report a newmeasurement of the 8Li half-life using a plastic scintillator and an ultrafastwaveform digitizing module. The result, T1/2 = (838.40 ± 0.36) ms, improves by a factor of 2.5 the most precise result obtained so far and is furthermore deduced with negligible corrections due to dead (...)

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[in2p3-00512350] Measurement of the 8Li half-life

30 août 2010

We report a newmeasurement of the 8Li half-life using a plastic scintillator and an ultrafastwaveform digitizing module. The result, T1/2 = (838.40 ± 0.36) ms, improves by a factor of 2.5 the most precise result obtained so far and is furthermore deduced with negligible corrections due to dead (...)

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12C nuclear reaction measurements for hadrontherapy

21 janvier 2010

Hadrontherapy treatments require a very high precision on the dose deposition ( 2.5% and 1-2mm) in order to keep the benefits of the precise ions' ballistic. The largest uncertainty on the physical dose deposition is due to ion fragmentation. Up to now, the simulation codes are not able to (...)

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12C nuclear reaction measurements for hadrontherapy

21 janvier 2010

Hadrontherapy treatments require a very high precision on the dose deposition ( 2.5% and 1-2mm) in order to keep the benefits of the precise ions' ballistic. The largest uncertainty on the physical dose deposition is due to ion fragmentation. Up to now, the simulation codes are not able to (...)

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Beam Diagnostics for SPIRAL2 RNB

1er septembre 2009

The SPIRAL2 project is based on a multi-beam driver facility in order to allow both ISOL and low-energy inflight techniques to produce intense radioactive ion beams (RIB) in a new Facility. A superconducting linac capable of accelerating 5-mA deuterons up to 40 MeV is used to bombard both thick (...)

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Beam Diagnostics for SPIRAL2 RNB

1er septembre 2009

The SPIRAL2 project is based on a multi-beam driver facility in order to allow both ISOL and low-energy inflight techniques to produce intense radioactive ion beams (RIB) in a new Facility. A superconducting linac capable of accelerating 5-mA deuterons up to 40 MeV is used to bombard both thick (...)

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Gas scintillation chamber for superheavy elements detection at GANIL

30 mars 2009

In the paper we present scintillation-ionization detector (SID) — a new device for support of the superheavy elements (SHE) identification in the standard, complete fusion methods. We highlight problems with background effects in SHE production and their minimization by introducing SID to the (...)

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Gas scintillation chamber for superheavy elements detection at GANIL

30 mars 2009

In the paper we present scintillation-ionization detector (SID) — a new device for support of the superheavy elements (SHE) identification in the standard, complete fusion methods. We highlight problems with background effects in SHE production and their minimization by introducing SID to the (...)

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The DosiMap, a new 2D scintillating dosimeter for IMRT quality assurance: Characterization of two Cerenkov discrimination methods

21 janvier 2009

New radiation therapy techniques such as IMRT present significant efficiency due to their highly conformal dose distributions. A consequence of the complexity of their dose distributions (high gradients, small irradiation fields, low dose distribution, ...) is the requirement for better (...)

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[in2p3-00354893] The DosiMap, a new 2D scintillating dosimeter for IMRT quality assurance: Characterization of two Cerenkov discrimination methods

21 janvier 2009

New radiation therapy techniques such as IMRT present significant efficiency due to their highly conformal dose distributions. A consequence of the complexity of their dose distributions (high gradients, small irradiation fields, low dose distribution, ...) is the requirement for better (...)

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The DOSIMAP, a high spatial resolution tissue equivalent 2D dosimeter for LINAC QA and IMRT verification

21 janvier 2009

The continual need for more accurate and effective techniques in radiation therapy makes it necessary to devise new control means combining high spatial resolution as well as high dose accuracy. Intensity modulated radio therapy (IMRT) allows highly conformed fields with high spatial gradient (...)

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[in2p3-00354888] The DOSIMAP, a high spatial resolution tissue equivalent 2D dosimeter for LINAC QA and IMRT verification

21 janvier 2009

The continual need for more accurate and effective techniques in radiation therapy makes it necessary to devise new control means combining high spatial resolution as well as high dose accuracy. Intensity modulated radio therapy (IMRT) allows highly conformed fields with high spatial gradient (...)

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Comparative study of plastic scintillators for dosimetric applications

21 janvier 2009

Plastic scintillators are widely studied for radiotherapy dosimetry because of their very interesting properties and especially their water equivalence. Nevertheless, to ensure accurate dose measurements, the properties of the scintillators must be very well known and adapted to this (...)

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[in2p3-00354851] Comparative study of plastic scintillators for dosimetric applications

21 janvier 2009

Plastic scintillators are widely studied for radiotherapy dosimetry because of their very interesting properties and especially their water equivalence. Nevertheless, to ensure accurate dose measurements, the properties of the scintillators must be very well known and adapted to this (...)

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On-line monitoring of fluence distributions and imaging of scanning ion beams

25 février 2008

In this paper we describe the design of an ion beam monitor developed to control irradiations of biological samples with ions at GANIL (Grand Accélérateur National d'Ions Lourds). This device can be used as an on-line monitor to provide transverse fluence distributions for active scanning ion (...)

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[in2p3-00258718] On-line monitoring of fluence distributions and imaging of scanning ion beams

25 février 2008

In this paper we describe the design of an ion beam monitor developed to control irradiations of biological samples with ions at GANIL (Grand Accélérateur National d'Ions Lourds). This device can be used as an on-line monitor to provide transverse fluence distributions for active scanning ion (...)

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An On-line Monitor for Fluence Distributions and Imaging of Scanning Ion Beams

6 décembre 2007

Clinical applications of hadron beams have generated a wide development of radiobiology experiments, especially at GANIL (Grand Accélérateur National d'Ions Lourds), an ion accelerator in Caen. Biological samples are irradiated with ions in order to observe the induced biological effects. As (...)

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An On-line Monitor for Fluence Distributions and Imaging of Scanning Ion Beams

6 décembre 2007

Clinical applications of hadron beams have generated a wide development of radiobiology experiments, especially at GANIL (Grand Accélérateur National d'Ions Lourds), an ion accelerator in Caen. Biological samples are irradiated with ions in order to observe the induced biological effects. As (...)

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Scintillating fiber dosimeter

19 juillet 2007

Radiotherapy treatments become more and more accurate, using techniques like IMRT. Their irradiation fields and dose depositions are small and complex, and only a few dosimeters are available for real time and in vivo control for photons as well as for electrons beams. In this context, a new (...)

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Scintillating fiber dosimeter

19 juillet 2007

Radiotherapy treatments become more and more accurate, using techniques like IMRT. Their irradiation fields and dose depositions are small and complex, and only a few dosimeters are available for real time and in vivo control for photons as well as for electrons beams. In this context, a new (...)

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Heavy ion beams monitoring for radiobiology applications

19 juillet 2007

We describe the design and the construction of an on-line ion beam monitor. The device provides accurate measurements for radiobiology experiments currently held at GANIL (Grand Accélérateur National d'Ions Lourds) in France. A prototype named IBIS (Ion Beam Inspection System) has been tested at (...)

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Heavy ion beams monitoring for radiobiology applications

19 juillet 2007

We describe the design and the construction of an on-line ion beam monitor. The device provides accurate measurements for radiobiology experiments currently held at GANIL (Grand Accélérateur National d'Ions Lourds) in France. A prototype named IBIS (Ion Beam Inspection System) has been tested at (...)

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Scandal - A facility for elastic neutron scattering studies in the 50-130 MeV range

11 juillet 2007

A facility for detection of scattered neutrons in the energy interval 50−130 MeV, SCANDAL (SCAttered Nucleon Detection AssembLy), is part of the standard detection system at the 20-180 MeV neutron beam facility of the The Svedberg Laboratory, Uppsala. It has primarily been used for studies of (...)

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Scandal - A facility for elastic neutron scattering studies in the 50-130 MeV range

11 juillet 2007

A facility for detection of scattered neutrons in the energy interval 50−130 MeV, SCANDAL (SCAttered Nucleon Detection AssembLy), is part of the standard detection system at the 20-180 MeV neutron beam facility of the The Svedberg Laboratory, Uppsala. It has primarily been used for studies of (...)

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(n,Xn) measurements at 96 MeV

5 juillet 2007

Double differential cross section for neutron production were measured in 96MeV neutrons induced reactions at the TSL laboratory in Uppsala (Sweden). Measurements for Fe and Pb targets were performed using simultaneously two independent setups: DECOI-DEMON and CLODIA-SCANDAL. The double (...)

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(n,Xn) measurements at 96 MeV

5 juillet 2007

Double differential cross section for neutron production were measured in 96MeV neutrons induced reactions at the TSL laboratory in Uppsala (Sweden). Measurements for Fe and Pb targets were performed using simultaneously two independent setups: DECOI-DEMON and CLODIA-SCANDAL. The double (...)

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A telescope for monitoring fast neutron sources

28 février 2007

In the framework of nuclear waste management, highly radiotoxic long-lived fission products and minor actinides are planned to be transmuted in a sub-critical reactor coupled with an intense external neutron source. The latter source would be created by a high-energy proton beam hitting a high (...)

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[in2p3-00134052] A telescope for monitoring fast neutron sources

28 février 2007

In the framework of nuclear waste management, highly radiotoxic long-lived fission products and minor actinides are planned to be transmuted in a sub-critical reactor coupled with an intense external neutron source. The latter source would be created by a high-energy proton beam hitting a high (...)

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A novel fast neutron detector for nuclear data measurements

24 novembre 2006

Accelerator driven system will use a heavy element target such as lead. Many calculations are available to simulate high-energy spallation neutron induced reactions, but little data are available for comparison with the simulations. In order to constrain the simulation tools we have measured (...)

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A novel fast neutron detector for nuclear data measurements

24 novembre 2006

Accelerator driven system will use a heavy element target such as lead. Many calculations are available to simulate high-energy spallation neutron induced reactions, but little data are available for comparison with the simulations. In order to constrain the simulation tools we have measured (...)

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Spectral discrimination of Cerenkov radiation in scintillating dosimeters

21 novembre 2006

Radiation therapy accelerators require highly accurate dose deposition and the output must be monitored frequently and regularly. Ionization chambers are the primary tool for this control, but their size, their high voltage needed, and the correction needed for electrons make them unsuitable (...)

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[in2p3-00113799] Spectral discrimination of Cerenkov radiation in scintillating dosimeters

21 novembre 2006

Radiation therapy accelerators require highly accurate dose deposition and the output must be monitored frequently and regularly. Ionization chambers are the primary tool for this control, but their size, their high voltage needed, and the correction needed for electrons make them unsuitable (...)

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A new scintillating fiber dosimeter using a single optical fiber and a CCD camera

23 août 2006

Radiotherapy treatments become more and more accurate, using very small irradiation fields and complex dose depositions. So small dosimeters for real time and in vivo dosimetry, suitable for photons as well as for electrons beams are highly desired. In this context, a scintillating fiber (...)

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[in2p3-00089774] A new scintillating fiber dosimeter using a single optical fiber and a CCD camera

23 août 2006

Radiotherapy treatments become more and more accurate, using very small irradiation fields and complex dose depositions. So small dosimeters for real time and in vivo dosimetry, suitable for photons as well as for electrons beams are highly desired. In this context, a scintillating fiber (...)

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Monitoring of 14 MeV neutrons

6 juin 2006

Long-lived fission products and minor actinides produced in nuclear power plants are the most radiotoxic nuclear wastes. They can be transmuted into stable nuclei or into nuclei with shorter lifetime thanks to the so-called Accelerator Driven Systems (ADS), consisting of the coupling of an (...)

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Monitoring of 14 MeV neutrons

6 juin 2006

Long-lived fission products and minor actinides produced in nuclear power plants are the most radiotoxic nuclear wastes. They can be transmuted into stable nuclei or into nuclei with shorter lifetime thanks to the so-called Accelerator Driven Systems (ADS), consisting of the coupling of an (...)

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