{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/115322"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/115322","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Development of a novel reaction plane detector for event plane measurements in heavy ion collisions at the large hadron collider","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms","abstract_has_math":false,"creators":["Phipps, Michael"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Grosse Perdekamp, Matthias","Sickles, Anne","Giannetta, Russ","Leite Noronha, Jorge"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-05","date_published":"2022-05","updated_at":"2026-07-22T22:24:54Z","subjects":["Event plane","reaction plane detector","zero degree calorimeter","RPD","ZDC","spectator-based event plane","spectator neutrons","heavy ion collisions"],"languages":["en","eng"],"rights":["Copyright 2021 Michael Phipps"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/115322","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Grosse Perdekamp, Matthias","Sickles, Anne","Giannetta, Russ","Leite Noronha, Jorge"]},{"key":"dc:creator","label":"Author","values":["Phipps, Michael"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-05","2022-01-10"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Event plane","reaction plane detector","zero degree calorimeter","RPD","ZDC","spectator-based event plane","spectator neutrons","heavy ion collisions"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2021 Michael Phipps"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/115322"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms","The student, Michael Phipps, accepted the attached license on 2021-12-22 at 13:42.","The student, Michael Phipps, submitted this Dissertation for approval on 2021-12-22 at 14:10.","This Dissertation was approved for publication on 2022-01-10 at 15:48.","DSpace SAF Submission Ingestion Package generated from Vireo submission #17470 on 2022-11-11 at 13:03:59","When ATLAS begins taking heavy ion data again in Run 3 it will do so with the ability to make spectator-based event plane measurements for the first time. This is due to the experiment's new Reaction Plane Detector (RPD), developed at the University of Illinois. The RPD will be installed in the far-forward region of ATLAS on either arm, between the first and second Zero Degree Calorimeter (ZDC) modules. It will sit at $|\\eta|$ $>$ 8.3 in a region that is sensitive to neutral spectators from the collision system. This provides sensitivity to the collision's $\\Psi_{1}$ event plane. Furthermore, the large rapidity gap between this forward region and the central detectors provides a relatively clean environment, largely free from biases due to non-flow effects. It also features a novel design that should allow it to survive and make successful measurements in an extremely challenging radiation environment. In this thesis, the development of the detector is detailed along with performance projections for physics observables. This starts with a review of past $\\Psi_{1}$-based physics measurements. The radiation levels expected during Runs 3 and 4 are then quantified and radiation studies discussed that led to the selection of the detector's radiation hard active material. Then the design itself will be presented and features and biases of this design explored through simulation. This allows for performance-based design optimization and provides the level of understanding necessary to reconstruct the detector's response as precisely as possible. A number of machine learning-based approaches to this reconstruction will be presented that allow for resolution improvements of up to 12$\\%$. These competitive simulation-based projection results will be compared to the resolutions to which other experiments have measured $\\Psi_{1}$, and finally, projections will be presented for several Run 4 optimization strategies that may boost performance by an additional 35$\\%$."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Development of a novel reaction plane detector for event plane measurements in heavy ion collisions at the large hadron collider"]}]}],"canonical_facts":{"dc:contributor":["Grosse Perdekamp, Matthias","Sickles, Anne","Giannetta, Russ","Leite Noronha, Jorge"],"dc:creator":["Phipps, Michael"],"dc:date":["2022-05","2022-01-10"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms","The student, Michael Phipps, accepted the attached license on 2021-12-22 at 13:42.","The student, Michael Phipps, submitted this Dissertation for approval on 2021-12-22 at 14:10.","This Dissertation was approved for publication on 2022-01-10 at 15:48.","DSpace SAF Submission Ingestion Package generated from Vireo submission #17470 on 2022-11-11 at 13:03:59","When ATLAS begins taking heavy ion data again in Run 3 it will do so with the ability to make spectator-based event plane measurements for the first time. This is due to the experiment's new Reaction Plane Detector (RPD), developed at the University of Illinois. The RPD will be installed in the far-forward region of ATLAS on either arm, between the first and second Zero Degree Calorimeter (ZDC) modules. It will sit at $|\\eta|$ $>$ 8.3 in a region that is sensitive to neutral spectators from the collision system. This provides sensitivity to the collision's $\\Psi_{1}$ event plane. Furthermore, the large rapidity gap between this forward region and the central detectors provides a relatively clean environment, largely free from biases due to non-flow effects. It also features a novel design that should allow it to survive and make successful measurements in an extremely challenging radiation environment. In this thesis, the development of the detector is detailed along with performance projections for physics observables. This starts with a review of past $\\Psi_{1}$-based physics measurements. The radiation levels expected during Runs 3 and 4 are then quantified and radiation studies discussed that led to the selection of the detector's radiation hard active material. Then the design itself will be presented and features and biases of this design explored through simulation. This allows for performance-based design optimization and provides the level of understanding necessary to reconstruct the detector's response as precisely as possible. A number of machine learning-based approaches to this reconstruction will be presented that allow for resolution improvements of up to 12$\\%$. These competitive simulation-based projection results will be compared to the resolutions to which other experiments have measured $\\Psi_{1}$, and finally, projections will be presented for several Run 4 optimization strategies that may boost performance by an additional 35$\\%$."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/115322"],"dc:language":["en","eng"],"dc:rights":["Copyright 2021 Michael Phipps"],"dc:subject":["Event plane","reaction plane detector","zero degree calorimeter","RPD","ZDC","spectator-based event plane","spectator neutrons","heavy ion collisions"],"dc:title":["Development of a novel reaction plane detector for event plane measurements in heavy ion collisions at the large hadron collider"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:54Z"}