A Multi-leaf Faraday Cup Especially for Proton Therapy of Ocular Tumors
نویسندگان
چکیده
For radiation therapy with protons knowing the beam range with high accuracy is crucial. The Multi-leaf Faraday Cup (MLFC) allows a quick and precise range measurement of the full radiation field in air. In the field of eye tumor therapy an accuracy in the submillimeter regime is required. We present an MLFC with 47 channels which can be read out simultaniuosly. Each channel consists of a 10 μm copper foil, connected to an ammeter, next to a 25 μm kapton foil. An automated preabsorber system allows range measurements in different energy regions. The achievable relative resolution of 50 μm in water meets the desired accuracy for eye tumor therapy. Furthermore is is possible to gain information about the dose distribution in water for quality assurance measurements.
منابع مشابه
A Multi-leaf Faraday Cup Especially for the Therapy of Ocular Tumors with Protons
For tumor therapy with protons it is crucial to know the beam range with high accuracy. The Multi-leaf Faraday Cup (MLFC) offers a quick and precise range and energy measurement. Our MLFC is adapted to the eye tumor therapy requirements and has 47 channels; each consists of a 10 μm copper foil (connected to an ammeter) next to a 25 μm KaptonTM foil. A system of absorbers has been constructed to...
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