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| Content Provider | PubMed Central |
|---|---|
| Author | Saad, Aldawood Castelhano, Ines Roman, Gernhäuser Kolff, Hugh Van Der Lang, Christian Liprandi, Silvia Lutter, Rudolf Maier, Ludwig Tim, Marinšek Schaart, Dennis R. Parodi, Katia Thirolf, Peter G. |
| Copyright Year | 2015 |
| Abstract | The properties of a 50 mm × 50 mm × 30 mm monolithic LaBr3:Ce scintillator crystal coupled to a position-sensitive multi-anode photomultiplier (PMT, Hamamatsu H9500), representing the absorbing detector of a Compton camera under study for online ion (proton) beam range verification in hadron therapy, was evaluated in combination with either absorptive or reflective crystal surface coating. This study covered an assessment of the energy and position-dependent energy resolution, exhibiting a factor of 2.5–3.5 improvement for the reflectively wrapped crystal at 662 keV. The spatial dependency was investigated using a collimated 137Cs source, showing a steep degradation of the energy resolution at the edges and corners of the absorptively wrapped crystal. Furthermore, the time resolution was determined to be 273 ps (FWHM) and 536 ps (FWHM) with reflective and absorptive coating, respectively, using a 60Co source. In contrast, the light spread function (LSF) of the light amplitude distribution on the PMT segments improved for the absorptively wrapped detector. Both wrapping modalities showed almost no differences in the energy-dependent photopeak detection efficiency. |
| Related Links | http://dx.doi.org/10.3389/fonc.2015.00270 |
| Starting Page | 270 |
| File Format | |
| ISSN | 2234943X |
| e-ISSN | 2234943X |
| Journal | Frontiers in Oncology |
| Volume Number | 5 |
| Language | English |
| Publisher | Frontiers Media S.A. |
| Publisher Date | 2015-12-01 |
| Access Restriction | Open |
| Rights Holder | Frontiers Media S.A. |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cancer Research Oncology |
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