PEAKFINDER Water Column

Water column system for highest precision peak detection in proton and heavy ion therapy

Measures position of Bragg peak within (20 ... 350) mm with a spatial resolution of 10 µm
Builtin monitor and measuring chambers
Gate input for spillby-spill measurements

The PEAKFINDER water column is especially designed for highest precision peak detection of proton and heavy ion beams in particle therapy. It is a closed water column for scans up to 35 cm depth with increments of 10 µm. Because of its sealed construction it can be used in any spatial orientation. Windows allow a visible inspection of the column inside. The signals of the built-in thin window Bragg peak chamber T34080 and the monitor chamber T34082 are read out by the TANDEM XDR electrometer. A TCP/IP interface is implemented for software control. The included PeakScan software package allows precise measurements and a detailed Bragg peak analysis.

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Related Literature

Dosimetry intercomparison of four proton therapy institutions in Germany employing spot scanning (Christian Bäumer et al) Zeitschrift für Medizinische Physik Volume 27, Issue 2, June 2017, Pages 80-85

Experimental dosimetric comparison of 1H, 4He, 12C and 16O scanned ion beams (T Tessonnier et al) Physics in Medicine & Biology, Volume 62, Number 10

Dosimetry for ion beam radiotherapy (Karger CP; Jaekel O; Palmans H; Kanai T) Physics in Medicine and Biology, 55 (21) (2010) R193-R234

Dosimetric commissioning and quality assurance of scanned ion beams at the Italian National Center for Oncological Hadrontherapy (A. Mirandola et al) Med. Phys. 42, 5287 (2015),

Dosimetric accuracy assessment of a treatment plan verification system for scanned proton beam radiotherapy: one-year experimental results and Monte Carlo analysis of the involved uncertainties (S Molinelli et al) 2013 Phys. Med. Biol. 58 3837

Experimental study of the water-to-air stopping power ratio of monoenergetic carbon ion beams for particle therapy (D Sánchez-Parcerisa et al) 2012 Phys. Med. Biol. 57 3629

Optimization of the stopping-power-ratio to Hounsfield-value calibration curve in proton and heavy ion therapy (M. Witt et al) Zeitschrift für Medizinische Physik Volume 25, Issue 3, September 2015, Pages 251–263

Free access

Direct determination of k Q for Farmer-type ionization chambers in a clinical scanned carbon ion beam using water calorimetry (J-M Osinga-Blaettermann et al) Phys. Med. Biol. 62 (2017) 2033-2054

Determination of ion recombination and polarity effect correction factors for a plane-parallel ionization Bragg peak chamber under proton and carbon ion pencil beams (A Mirandola et al) PMB Vol. 64 Nr 9

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