M Donetti et al 2006 Phys. Med. Biol. 51 485 doi:10.1088/0031-9155/51/3/002
A method for the inter-calibration of a matrix of sensors
M Donetti1,2, E Garelli2,3, F Marchetto2, A Boriano2,4, F Bourhaleb5, R Cirio2, I Cornelius2, S Giordanengo2, A La Rosa2,4, U Nastasi2,6 and C Peroni2,4
Show affiliationsWe present a quick and easy method for the calibration of a matrix of sensors. The algorithm is based on a three-step irradiation procedure which relies only on the constancy of the delivered fluence at each step. With this method the gain of each sensor is derived relative to a reference detector. The algorithm has been applied to a matrix of (32 × 32) ionization chambers. After the calibration coefficients have been applied, by comparing the response of the matrix of chambers to a reference detector over a large field, we determined that the fluence measurement of individual chambers is better than 0.7%. The algorithm solves the cumbersome problem of the relative gain calibration of a matrix of a large number of sensors.
- PACS
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07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
87.53.-j Effects of ionizing radiation on biological systems
29.40.Cs Gas-filled counters: ionization chambers, proportional, and avalanche counters
- Subjects
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Accelerators, beams and electromagnetism
- Dates
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Issue 3 (7 February 2006)
Received 26 September 2005, in final form 16 November 2005
Published 11 January 2006
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A method for the inter-calibration of a matrix of sensors
M Donetti et al 2006 Phys. Med. Biol. 51 485
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