An online monitor ionization chamber used in particle therapy

ADVANCED NUCLEAR INSTRUMENTATION AND DETECTION

An online monitor ionization chamber used in particle therapy

TANG Bin，

HU Zhengguo，

MAO Ruishi，

XU Zhiguo，

WANG Jiansong，

YUE Ke，

TU Xiaolin，

WU Dapeng，

CHEN Jinda，

ZHANG Jie，

WANG Meng，

SUN Zhiyu，

ZHANG Xueheng，

LI Qiang，

XU Hushan，

XIOA Guoqing

Nuclear Science and Techniques

Vol.20, No.3

pp.177-180

Published in print 20 Jun 2009

DOI：10.13538/j.1001-8042/nst.20.177-180

35500

The clinical trials of tumor therapy using heavy ions beam ¹²C are now in progress at Institute of Modern Physics in Lanzhou. In order to achieve the precise radiotherapy with the high energy ¹²C beam in active pencil beam scanning mode, we have developed an ionization chamber(IC) as an online monitor for beam intensity and also a dosimeter after calibration. Through the choosing of working gas and voltage, optimizing of the electrics and the read-out system, calibrating the linearity, the detector system provide us one of the simple and highly reliable way to monitoring the beam during the active pencil beam scanning treatments. The measurement results of this detector system show that it could work well under the condition of high energy ¹²C beam in active pencil beam scanning mode.

Heavy ion beam therapyIntegral ionization chamberIrradiation doseAbsorb dose

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