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Title: SU-E-T-677: Reproducibility of Production of Ionization Chambers

Abstract

Purpose: To compare the reproducibility of the production of several cylindrical and plane-parallel chambers popular in Poland in terms of a calibration coefficient. Methods: The investigation was performed for PTW30013 (20 chambers), 30001 (10 chambers), FC65-G (17 chambers) cylindrical chambers and for PPC05 (14 chambers), Roos 34001 (8 chambers) plane parallel chambers. The calibration factors were measured at the same accredited secondary standard laboratory in terms of a dose to water. All the measurements were carried out at the same laboratory, by the same staff, in accordance with the same IAEA recommendations. All the chambers were calibrated in the Co60 beam. Reproducibility was described in terms of the mean value, its standard deviation and the ratio of the maximum and minimum value of calibration factors for each set of chambers separately. The combined uncertainty budged (1SD) calculated according to the IAEA-TECDOC-1585 of the calibration factor was of 0.25%. Results: The calibration coefficients for PTW30013, 30001, and FC65-G chambers were 5.36±0.03, 5.28±0.06, 4.79±0.015 nC/Gy respectively and for PPC05, and Roos chambers were 59±2, 8.3±0.1 nC/Gy respectively. The maximum/minimum ratio of calibration factors for PTW30013, 30001, FC65-G, and for PPC05, Roos chambers were 1.03, 1.03, 1.01, 1.14 and 1.03 respectively. Conclusion: Themore » production of all ion chambers was very reproducible except the Markus type PPC05 for which the ratio of maximum/minimum calibration coefficients of 1.14 was obtained.« less

Authors:
; ;  [1]
  1. Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Mazovia (Poland)
Publication Date:
OSTI Identifier:
22538184
Resource Type:
Journal Article
Resource Relation:
Journal Name: Medical Physics; Journal Volume: 42; Journal Issue: 6; Other Information: (c) 2015 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPES AND RADIATION SOURCES; 62 RADIOLOGY AND NUCLEAR MEDICINE; CALIBRATION; COBALT 60; CYLINDRICAL CONFIGURATION; GY RANGE; IONIZATION CHAMBERS; RADIATION DOSES; SSDL

Citation Formats

Kukolowicz, P, Bulski, W, and Ulkowski, P. SU-E-T-677: Reproducibility of Production of Ionization Chambers. United States: N. p., 2015. Web. doi:10.1118/1.4925040.
Kukolowicz, P, Bulski, W, & Ulkowski, P. SU-E-T-677: Reproducibility of Production of Ionization Chambers. United States. doi:10.1118/1.4925040.
Kukolowicz, P, Bulski, W, and Ulkowski, P. Mon . "SU-E-T-677: Reproducibility of Production of Ionization Chambers". United States. doi:10.1118/1.4925040.
@article{osti_22538184,
title = {SU-E-T-677: Reproducibility of Production of Ionization Chambers},
author = {Kukolowicz, P and Bulski, W and Ulkowski, P},
abstractNote = {Purpose: To compare the reproducibility of the production of several cylindrical and plane-parallel chambers popular in Poland in terms of a calibration coefficient. Methods: The investigation was performed for PTW30013 (20 chambers), 30001 (10 chambers), FC65-G (17 chambers) cylindrical chambers and for PPC05 (14 chambers), Roos 34001 (8 chambers) plane parallel chambers. The calibration factors were measured at the same accredited secondary standard laboratory in terms of a dose to water. All the measurements were carried out at the same laboratory, by the same staff, in accordance with the same IAEA recommendations. All the chambers were calibrated in the Co60 beam. Reproducibility was described in terms of the mean value, its standard deviation and the ratio of the maximum and minimum value of calibration factors for each set of chambers separately. The combined uncertainty budged (1SD) calculated according to the IAEA-TECDOC-1585 of the calibration factor was of 0.25%. Results: The calibration coefficients for PTW30013, 30001, and FC65-G chambers were 5.36±0.03, 5.28±0.06, 4.79±0.015 nC/Gy respectively and for PPC05, and Roos chambers were 59±2, 8.3±0.1 nC/Gy respectively. The maximum/minimum ratio of calibration factors for PTW30013, 30001, FC65-G, and for PPC05, Roos chambers were 1.03, 1.03, 1.01, 1.14 and 1.03 respectively. Conclusion: The production of all ion chambers was very reproducible except the Markus type PPC05 for which the ratio of maximum/minimum calibration coefficients of 1.14 was obtained.},
doi = {10.1118/1.4925040},
journal = {Medical Physics},
number = 6,
volume = 42,
place = {United States},
year = {Mon Jun 15 00:00:00 EDT 2015},
month = {Mon Jun 15 00:00:00 EDT 2015}
}