Nina Tilly et al 2007 Phys. Med. Biol. 52 2741 doi:10.1088/0031-9155/52/10/008
Nina Tilly1,2, Erik Grusell1, Peter Kimstrand1, Stefan Lorin1, Konrad Gajewski3, Mikael Pettersson3, Andreas Bäcklund3 and Bengt Glimelius1
Show affiliationsIn this paper we present the recent developments made for the scanning system for proton beams at TSL in Uppsala, showing that this system is now fully functional being able to produce conformal intensity modulated scan patterns with sufficient accuracy. A new control and supervising system handling the beam delivery including the control of the synchrocyclotron and the scanning system is developed and described in detail. A complete dosimetry system with transmission ionization chambers and a multi-wire ionization chamber for monitoring of the beam during scanning has been constructed. The details of the dose monitors and the position sensitive multi-wire ionization chamber are presented in this work. Furthermore, we have established procedures for verification measurements to ensure the quality of the beam and also methods for calibration of the beam monitors and relative and absolute dosimetry for complex scanned beams.
87.53.Bn Dosimetry/exposure assessment
87.53.Kn Conformal radiation treatment
Issue 10 (21 May 2007)
Received 5 September 2006, in final form 9 March 2007
Published 26 April 2007
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