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3D-mesa 'bridge' silicon microdosimeter: charge collection study and application to RBE studies in 12C radiation therapy

Journal Article


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Abstract


  • Microdosimetry is an extremely useful technique, used for dosimetry in unknown mixed radiation fields typical of space and aviation, as well as in hadron therapy. A new silicon microdosimeter with 3D sensitive volumes has been proposed to overcome the shortcomings of the conventional Tissue Equivalent Proportional Counter. In this article, the charge collection characteristics of a new 3D mesa microdosimeter were investigated using the ANSTO heavy ion microprobe utilizing 5.5 MeV rm He2 + and 2 MeV rm H + ions. Measurement of the microdosimetric characteristics allowed for the determination of the Relative Biological Effectiveness of the 12rm C heavy ion therapy beam at the Heavy Ion Medical Accelerator in Chiba (HIMAC), Japan. Well-defined sensitive volumes of the 3D mesa microdosimeter have been observed and the microdosimetric RBE obtained showed good agreement with the TEPC. The new 3D mesa 'bridge' microdosimeter is a step forward towards a microdosimeter with fully free-standing 3D sensitive volumes.

Publication Date


  • 2015

Citation


  • Tran, L. T., Chartier, L., Prokopovich, D. A., Reinhard, M. I., Petasecca, M., Guatelli, S., Lerch, M. L. F., Perevertaylo, V. L., Zaider, M., Matsufuji, N., Jackson, M., Nancarrow, M. & Rosenfeld, A. B. (2015). 3D-mesa 'bridge' silicon microdosimeter: charge collection study and application to RBE studies in 12C radiation therapy. IEEE Transactions on Nuclear Science, 62 (2), 504-511.

Scopus Eid


  • 2-s2.0-84928014070

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4863&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3844

Number Of Pages


  • 7

Start Page


  • 504

End Page


  • 511

Volume


  • 62

Issue


  • 2

Abstract


  • Microdosimetry is an extremely useful technique, used for dosimetry in unknown mixed radiation fields typical of space and aviation, as well as in hadron therapy. A new silicon microdosimeter with 3D sensitive volumes has been proposed to overcome the shortcomings of the conventional Tissue Equivalent Proportional Counter. In this article, the charge collection characteristics of a new 3D mesa microdosimeter were investigated using the ANSTO heavy ion microprobe utilizing 5.5 MeV rm He2 + and 2 MeV rm H + ions. Measurement of the microdosimetric characteristics allowed for the determination of the Relative Biological Effectiveness of the 12rm C heavy ion therapy beam at the Heavy Ion Medical Accelerator in Chiba (HIMAC), Japan. Well-defined sensitive volumes of the 3D mesa microdosimeter have been observed and the microdosimetric RBE obtained showed good agreement with the TEPC. The new 3D mesa 'bridge' microdosimeter is a step forward towards a microdosimeter with fully free-standing 3D sensitive volumes.

Publication Date


  • 2015

Citation


  • Tran, L. T., Chartier, L., Prokopovich, D. A., Reinhard, M. I., Petasecca, M., Guatelli, S., Lerch, M. L. F., Perevertaylo, V. L., Zaider, M., Matsufuji, N., Jackson, M., Nancarrow, M. & Rosenfeld, A. B. (2015). 3D-mesa 'bridge' silicon microdosimeter: charge collection study and application to RBE studies in 12C radiation therapy. IEEE Transactions on Nuclear Science, 62 (2), 504-511.

Scopus Eid


  • 2-s2.0-84928014070

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4863&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3844

Number Of Pages


  • 7

Start Page


  • 504

End Page


  • 511

Volume


  • 62

Issue


  • 2