Ana F Maia and Linda V E Caldas 2005 Phys. Med. Biol. 50 3837 doi:10.1088/0031-9155/50/16/012
Ana F Maia and Linda V E Caldas
Show affiliationsA special parallel-plate ionization chamber was developed. The motivation for the construction of this new chamber was mainly to fulfil the need of a reference system for computed tomography standard beams in the Calibration Laboratory of IPEN. However, the chamber was tested also in standard radiation beams of mammography and conventional diagnostic radiology. The chamber was manufactured at the institute workshop, as simply and cheaply as possible. Its design differs from the common ionization chambers used in dosimetric procedures of computed tomography equipment, because it is a parallel-plate chamber instead of a cylindrical chamber. However, its dimensions and sensitive volume are very similar to those of a commercial pencil ionization chamber. The new ionization chamber was submitted to several characterization and quality control tests, showing its very good performance.
29.40.Cs Gas-filled counters: ionization chambers, proportional, and avalanche counters
Accelerators, beams and electromagnetism
Issue 16 (21 August 2005)
Received 24 March 2005, in final form 17 June 2005
Published 3 August 2005
Ana F Maia and Linda V E Caldas 2005 Phys. Med. Biol. 50 3837
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