{"id":{"repo_id":"carleton","oai_identifier":"oai:carleton.scholaris.ca:20.500.14718/41724"},"canonical_url":"https://search.dev.ndltd.org/etd/carleton/oai:carleton.scholaris.ca:20.500.14718/41724","repository":{"repo_id":"carleton","name":"Carleton University","base_url":"https://carleton.scholaris.ca/server/oai/request"},"display":{"title":"Development of a Hybrid Alanine-calorimetry Absorbed-dose Standard for Linac Electron Beams","abstract":"The NRC primary standard water calorimeter is well-established for measuring dose to water in cobalt-60, linac photon beams and high-energy linac electron beams. However, for lower-energy electron beams, given the short range of electrons and the physical dimensions of the calorimeter, it is impossible to perform measurements at the reference depths in water. Extending the measurement of absorbed dose to lower energy electron beams requires an alternative system. The goal is to establish a hybrid absorbed-dose standard for linac electron beams by calibrating alanine against secondary standard ionization chambers, with calibrations traceable to primary standard water calorimeter measurements in high-energy electron beams, and subsequently using alanine in low-energy electron beams to determine absorbed dose. Ionization chambers calibrated against alanine in electron beams yield results for beam quality conversion factors that are in good agreement (within 0.68% uncertainty) with literature data for the five ionization chambers investigated in this work.","abstract_html":"The NRC primary standard water calorimeter is well-established for measuring dose to water in cobalt-60, linac photon beams and high-energy linac electron beams. However, for lower-energy electron beams, given the short range of electrons and the physical dimensions of the calorimeter, it is impossible to perform measurements at the reference depths in water. Extending the measurement of absorbed dose to lower energy electron beams requires an alternative system. The goal is to establish a hybrid absorbed-dose standard for linac electron beams by calibrating alanine against secondary standard ionization chambers, with calibrations traceable to primary standard water calorimeter measurements in high-energy electron beams, and subsequently using alanine in low-energy electron beams to determine absorbed dose. Ionization chambers calibrated against alanine in electron beams yield results for beam quality conversion factors that are in good agreement (within 0.68% uncertainty) with literature data for the five ionization chambers investigated in this work.","abstract_has_math":false,"creators":["Surensoy, Rodi"],"institution":"Carleton University","degree_name":"Master of Science (M.Sc.)","degree_level":"Master's","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022","date_published":"2022","updated_at":"2026-07-24T01:34:29Z","subjects":[],"languages":["en"],"rights":["Copyright © 2022 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.22215/etd/2022-15286"],"render_values":[{"text":"10.22215/etd/2022-15286","href":"https://doi.org/10.22215/etd/2022-15286","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14718/41724","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Surensoy, Rodi"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-04-08T20:24:28Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-04-08T20:24:28Z"]},{"key":"dc:date.issued","label":"Date","values":["2022"]},{"key":"dc:publisher","label":"Institution","values":["Carleton University"]},{"key":"dc:type","label":"Dc Type","values":["thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Master's"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (M.Sc.)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright © 2022 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.22215/etd/2022-15286"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/20.500.14718/41724"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The NRC primary standard water calorimeter is well-established for measuring dose to water in cobalt-60, linac photon beams and high-energy linac electron beams. However, for lower-energy electron beams, given the short range of electrons and the physical dimensions of the calorimeter, it is impossible to perform measurements at the reference depths in water. Extending the measurement of absorbed dose to lower energy electron beams requires an alternative system. The goal is to establish a hybrid absorbed-dose standard for linac electron beams by calibrating alanine against secondary standard ionization chambers, with calibrations traceable to primary standard water calorimeter measurements in high-energy electron beams, and subsequently using alanine in low-energy electron beams to determine absorbed dose. Ionization chambers calibrated against alanine in electron beams yield results for beam quality conversion factors that are in good agreement (within 0.68% uncertainty) with literature data for the five ionization chambers investigated in this work."]},{"key":"dc:title","label":"Title","values":["Development of a Hybrid Alanine-calorimetry Absorbed-dose Standard for Linac Electron Beams"]}]}],"canonical_facts":{"dc:creator":["Surensoy, Rodi"],"dc:date.accessioned":["2025-04-08T20:24:28Z"],"dc:date.available":["2025-04-08T20:24:28Z"],"dc:date.issued":["2022"],"dc:description.abstract":["The NRC primary standard water calorimeter is well-established for measuring dose to water in cobalt-60, linac photon beams and high-energy linac electron beams. However, for lower-energy electron beams, given the short range of electrons and the physical dimensions of the calorimeter, it is impossible to perform measurements at the reference depths in water. Extending the measurement of absorbed dose to lower energy electron beams requires an alternative system. The goal is to establish a hybrid absorbed-dose standard for linac electron beams by calibrating alanine against secondary standard ionization chambers, with calibrations traceable to primary standard water calorimeter measurements in high-energy electron beams, and subsequently using alanine in low-energy electron beams to determine absorbed dose. Ionization chambers calibrated against alanine in electron beams yield results for beam quality conversion factors that are in good agreement (within 0.68% uncertainty) with literature data for the five ionization chambers investigated in this work."],"dc:identifier.doi":["10.22215/etd/2022-15286"],"dc:identifier.uri":["https://hdl.handle.net/20.500.14718/41724"],"dc:language.iso":["en"],"dc:publisher":["Carleton University"],"dc:rights":["Copyright © 2022 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner."],"dc:title":["Development of a Hybrid Alanine-calorimetry Absorbed-dose Standard for Linac Electron Beams"],"dc:type":["thesis"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Master's"],"thesis:degree_name":["Master of Science (M.Sc.)"]},"updated_at":"2026-07-24T01:34:29Z"}