Abstract:Radiographic or silver halide film is a well-established 2D dosimeter with an unquestioned spatial resolution. But its higher sensitivity to low-energy photons has to be taken into consideration. Metal compensators or physical modulators to deliver intensity modulated radiation therapy (IMRT) are known to change the beam energy spectrum and to produce scattered photons and contaminating electrons. Therefore the reliability of film dosimetry in compensator-based IMRT might be questioned. Conflicting data have b… Show more
“…Anani'n and colleagues demonstrated the acceleration of carbon ions formed by an LAIS in the Synchrophasotron at the Joint Institute for Nuclear Research, Dubna, Russia [6]. Carbon ions are accelerated in a preinjector and LU-20 linear accelerator, which provide an energy of 5 MeV=u.…”
Fully stripped carbon ions generated in a laser-ablation ion source are directly injected into a smallscale induction synchrotron. Carbon-ion beams of C 6þ , C 5þ , and C 4þ are trapped in the barrier bucket. Beam properties, such as the momentum spread and beam lifetime in the low-energy ring, are measured and discussed in relation to the essential characteristics required in a carbon driver for future carbon therapies.
“…Anani'n and colleagues demonstrated the acceleration of carbon ions formed by an LAIS in the Synchrophasotron at the Joint Institute for Nuclear Research, Dubna, Russia [6]. Carbon ions are accelerated in a preinjector and LU-20 linear accelerator, which provide an energy of 5 MeV=u.…”
Fully stripped carbon ions generated in a laser-ablation ion source are directly injected into a smallscale induction synchrotron. Carbon-ion beams of C 6þ , C 5þ , and C 4þ are trapped in the barrier bucket. Beam properties, such as the momentum spread and beam lifetime in the low-energy ring, are measured and discussed in relation to the essential characteristics required in a carbon driver for future carbon therapies.
“…The advantage of laser produced plasma as a source of multicharged ions (MCI) for an accelerator has been confirmed both by physical research (Bykovskii et al 1979) and by direct experiments of MCI acceleration in a synchrophasotron LHE (Ananin et al 1977) and a cyclotron LNR at the Joint Institute of Nuclear Research in Dubna (Ananin et al 1982). For related work, see Peacock et al (1969) Tonon (1972) and, for very energetic ions, Hora et al (1978);, which predicted the 100 MeV ions measured by Sessler (1982).…”
Section: Requirements For the Laser Heavy Ion Sourcementioning
The present paper presents experimental results of the transverse and longitudinal phase volume for the expanding multicharged ions in laser produced plasma, created by focusing a CO 2 -laser (beam) onto a Pb 207 target. The total number of Pb 207 ions (with Z = 1 or 2 and Z = 6), the ion current duration and amplitude at a distance of 1 m from the laser target within 10~2 steradians are determined. The measured experimental parameters of the laser heavy ion source are compared with the driver requirement for the heavy ion inertial fusion (HIIF) programme.The phenomena observed in the experiment confirm the results of numerical calculations using a two temperature hydrodynamic programme.
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