title: Development and verification of the pulsed scanned proton beam at The Svedberg Laboratory in Uppsala.
abstract: In 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.
authors.affiliation: Department of Oncology, Radiology and Clinical Immunology, Uppsala University, Akademiska sjukhuset, SE-751 85 Uppsala, Sweden. nina.tilly@onkologi.uu.se
authors.forename: Nina
authors.initials: N
authors.lastname: Tilly
authors.forename: Erik
authors.initials: E
authors.lastname: Grusell
authors.forename: Peter
authors.initials: P
authors.lastname: Kimstrand
authors.forename: Stefan
authors.initials: S
authors.lastname: Lorin
authors.forename: Konrad
authors.initials: K
authors.lastname: Gajewski
authors.forename: Mikael
authors.initials: M
authors.lastname: Pettersson
authors.forename: Andreas
authors.initials: A
authors.lastname: Bäcklund
authors.forename: Bengt
authors.initials: B
authors.lastname: Glimelius
mesh_terms: D002138:Calibration; D017357:Cyclotrons; D011522:Protons; D011874:Radiometry; D011882:Radiotherapy, High-Energy / Q000295:instrumentation* / Q000379:methods
chemical_list: D011522:Protons