Emulsion Cloud Chamber Technology to measure the Fragmentation of Carbon Ion Beams used in Hadron Therapy
Giovanni De Lellis, Antonia Di Crescenzo, Adele Lauria, Maria Cristina Montesi
Abstract:
The use of Carbon ion beams in hadron therapy has become more and more used in recent years. Carbon ions present some advantages when compared to traditional radiotherapy, such as the dose-depth deposition that makes possible to reach critical anatomical sites and the biological effectiveness. The knowledge of the light fragments production yield and their angular distribution has a key role in the estimation of the dose profile in hadron therapy. We present a detector based on nuclear emulsions for fragmentation measurements that performs a submicrometric tridimensional spatial resolution, excellent multi-particle separation and large angle track recognition. Nuclear emulsions are assembled in order to realize a hybrid detector (Emulsion Cloud Chamber - ECC) made of 300 μ-thick nuclear emulsion films alternated with passive material, such as lead. The data presented here have been obtained by exposing two ECC to the fragments produced by a 400 MeV/nucleon 12C beam on a carbon target (GSI laboratory, Darmstadt, Germany). The ECC was exposed inside a more complex detector named FIRST in order to collect fragments with an angular distribution in the range 33°÷88° (with respect to the beam axis). Preliminary results on fragments momentum measurements performed either with the Multiple Coulomb Scattering and the range methods are reported here.
Keywords:
Emulsion detector, carbon ion beam, Hadron-therapy
Download:
IMEKO-TC4-2014-474.pdf
DOI:
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Event details
IMEKO TC:
TC4
Event name:
TC4 Symposium 2014
Title:

20th IMEKO TC4 Symposium on Measurements of Electrical Quantities (together with 18th TC4 International Workshop on ADC and DCA Modeling and Testing, IWADC)
"Research on Electrical and Electronic Measurement for the Economic Upturn"

Place:
Benevento, ITALY
Time:
15 September 2014 - 17 September 2014
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