{"id":"https://openalex.org/W7066284499","doi":null,"title":"Illuminating Antimatter: the ALPHA antihydrogen experiment at CERN","display_name":"Illuminating Antimatter: the ALPHA antihydrogen experiment at CERN","publication_year":2021,"publication_date":"2021-01-01","ids":{"openalex":"https://openalex.org/W7066284499"},"language":"en","primary_location":{"id":"pmh:oai:cds.cern.ch:2752897","doi":null,"is_oa":false,"landing_page_url":"http://cds.cern.ch/record/2752897","pdf_url":null,"source":{"id":"https://openalex.org/S4306402195","display_name":"CERN Document Server (European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5091577210","display_name":"Jeffrey Scott Hangst","orcid":"https://orcid.org/0000-0001-5288-2330","observed_orcids":["https://orcid.org/0000-0001-5288-2330"]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Hangst, Jeffrey Scott","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5091577210"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":true,"primary_topic":{"id":"https://openalex.org/T10523","display_name":"Atomic and Molecular Physics","score":0.9735999703407288,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10523","display_name":"Atomic and Molecular Physics","score":0.9735999703407288,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10048","display_name":"Particle physics theoretical and experimental studies","score":0.006099999882280827,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12004","display_name":"Advanced Frequency and Time Standards","score":0.00419999985024333,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/antihydrogen","display_name":"antihydrogen","score":0.9940000176429749},{"id":"https://openalex.org/keywords/alpha-experiment","display_name":"ALPHA experiment","score":0.9549999833106995},{"id":"https://openalex.org/keywords/antiproton-decelerator","display_name":"antiproton decelerator","score":0.7850000262260437},{"id":"https://openalex.org/keywords/antihydrogen-spectroscopy","display_name":"antihydrogen spectroscopy","score":0.8550000190734863},{"id":"https://openalex.org/keywords/fundamental-symmetries","display_name":"fundamental symmetries","score":0.7910000085830688},{"id":"https://openalex.org/keywords/antimatter-gravity","display_name":"antimatter gravity","score":0.6990000009536743},{"id":"https://openalex.org/keywords/trapped-antihydrogen","display_name":"trapped antihydrogen","score":0.7400000095367432}],"concepts":[{"id":"https://openalex.org/C11878816","wikidata":"https://www.wikidata.org/wiki/Q216121","display_name":"Antihydrogen","level":5,"score":0.9970999956130981},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.8289999961853027},{"id":"https://openalex.org/C203918408","wikidata":"https://www.wikidata.org/wiki/Q107575","display_name":"Antiproton","level":3,"score":0.8137999773025513},{"id":"https://openalex.org/C87668248","wikidata":"https://www.wikidata.org/wiki/Q40605","display_name":"Large Hadron Collider","level":2,"score":0.6499000191688538},{"id":"https://openalex.org/C185544564","wikidata":"https://www.wikidata.org/wiki/Q81197","display_name":"Nuclear physics","level":1,"score":0.6456999778747559},{"id":"https://openalex.org/C109214941","wikidata":"https://www.wikidata.org/wiki/Q18334","display_name":"Particle physics","level":1,"score":0.49480000138282776},{"id":"https://openalex.org/C62583473","wikidata":"https://www.wikidata.org/wiki/Q260060","display_name":"CPT symmetry","level":4,"score":0.46650001406669617},{"id":"https://openalex.org/C110916831","wikidata":"https://www.wikidata.org/wiki/Q83197","display_name":"Antimatter","level":4,"score":0.4081000089645386},{"id":"https://openalex.org/C64943373","wikidata":"https://www.wikidata.org/wiki/Q2651003","display_name":"Alpha (finance)","level":4,"score":0.31690001487731934},{"id":"https://openalex.org/C182306322","wikidata":"https://www.wikidata.org/wiki/Q1779371","display_name":"Order (exchange)","level":2,"score":0.2824999988079071},{"id":"https://openalex.org/C32891209","wikidata":"https://www.wikidata.org/wiki/Q483666","display_name":"Spectroscopy","level":2,"score":0.27950000762939453},{"id":"https://openalex.org/C184748400","wikidata":"https://www.wikidata.org/wiki/Q2599934","display_name":"Physics beyond the Standard Model","level":2,"score":0.2662000060081482},{"id":"https://openalex.org/C196597080","wikidata":"https://www.wikidata.org/wiki/Q227467","display_name":"Atomic clock","level":2,"score":0.26570001244544983},{"id":"https://openalex.org/C512968161","wikidata":"https://www.wikidata.org/wiki/Q556","display_name":"Hydrogen","level":2,"score":0.25440001487731934},{"id":"https://openalex.org/C124017977","wikidata":"https://www.wikidata.org/wiki/Q11412","display_name":"Gravitation","level":2,"score":0.24250000715255737},{"id":"https://openalex.org/C184779094","wikidata":"https://www.wikidata.org/wiki/Q26383","display_name":"Atomic physics","level":1,"score":0.22179999947547913},{"id":"https://openalex.org/C186395988","wikidata":"https://www.wikidata.org/wiki/Q1068126","display_name":"Exotic atom","level":3,"score":0.21690000593662262},{"id":"https://openalex.org/C2781367475","wikidata":"https://www.wikidata.org/wiki/Q1440593","display_name":"Hydrogen maser","level":3,"score":0.21410000324249268},{"id":"https://openalex.org/C70747811","wikidata":"https://www.wikidata.org/wiki/Q661248","display_name":"Rydberg formula","level":4,"score":0.2046000063419342},{"id":"https://openalex.org/C3079626","wikidata":"https://www.wikidata.org/wiki/Q234881","display_name":"Quantum electrodynamics","level":1,"score":0.20399999618530273},{"id":"https://openalex.org/C189166818","wikidata":"https://www.wikidata.org/wiki/Q130825","display_name":"Particle accelerator","level":3,"score":0.20069999992847443},{"id":"https://openalex.org/C194172872","wikidata":"https://www.wikidata.org/wiki/Q182717","display_name":"Antiparticle","level":4,"score":0.19519999623298645},{"id":"https://openalex.org/C98083399","wikidata":"https://www.wikidata.org/wiki/Q3246517","display_name":"Underwater","level":2,"score":0.19009999930858612},{"id":"https://openalex.org/C2776174256","wikidata":"https://www.wikidata.org/wiki/Q830842","display_name":"BETA (programming language)","level":2,"score":0.18940000236034393},{"id":"https://openalex.org/C101454708","wikidata":"https://www.wikidata.org/wiki/Q17106019","display_name":"Standard Model (mathematical formulation)","level":3,"score":0.18240000307559967},{"id":"https://openalex.org/C30475298","wikidata":"https://www.wikidata.org/wiki/Q909554","display_name":"Computational physics","level":1,"score":0.17900000512599945},{"id":"https://openalex.org/C33332235","wikidata":"https://www.wikidata.org/wiki/Q18362","display_name":"Theoretical physics","level":1,"score":0.1736000031232834},{"id":"https://openalex.org/C163985040","wikidata":"https://www.wikidata.org/wiki/Q1172399","display_name":"Data acquisition","level":2,"score":0.17010000348091125},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.16500000655651093},{"id":"https://openalex.org/C66385817","wikidata":"https://www.wikidata.org/wiki/Q103517","display_name":"Alpha particle","level":2,"score":0.16120000183582306},{"id":"https://openalex.org/C127774322","wikidata":"https://www.wikidata.org/wiki/Q37147","display_name":"Atomic nucleus","level":2,"score":0.15860000252723694},{"id":"https://openalex.org/C156778621","wikidata":"https://www.wikidata.org/wiki/Q1365748","display_name":"Spectrum (functional analysis)","level":2,"score":0.15780000388622284},{"id":"https://openalex.org/C102999125","wikidata":"https://www.wikidata.org/wiki/Q43116","display_name":"Elementary particle","level":2,"score":0.156700000166893},{"id":"https://openalex.org/C2777299769","wikidata":"https://www.wikidata.org/wiki/Q3707858","display_name":"Type (biology)","level":2,"score":0.1542000025510788},{"id":"https://openalex.org/C3018233652","wikidata":"https://www.wikidata.org/wiki/Q101965","display_name":"Experimental research","level":2,"score":0.15369999408721924},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.15139999985694885},{"id":"https://openalex.org/C2776640939","wikidata":"https://www.wikidata.org/wiki/Q6643508","display_name":"Hydrogen atom","level":3,"score":0.15070000290870667},{"id":"https://openalex.org/C116915560","wikidata":"https://www.wikidata.org/wiki/Q83504","display_name":"Nuclear engineering","level":1,"score":0.14920000731945038},{"id":"https://openalex.org/C2780009758","wikidata":"https://www.wikidata.org/wiki/Q6804172","display_name":"Measure (data warehouse)","level":2,"score":0.14650000631809235},{"id":"https://openalex.org/C71976986","wikidata":"https://www.wikidata.org/wiki/Q30006","display_name":"Gravitational acceleration","level":3,"score":0.14470000565052032}],"mesh":[],"locations_count":1,"locations":[{"id":"pmh:oai:cds.cern.ch:2752897","doi":null,"is_oa":false,"landing_page_url":"http://cds.cern.ch/record/2752897","pdf_url":null,"source":{"id":"https://openalex.org/S4306402195","display_name":"CERN Document Server (European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2560119217","https://openalex.org/W2087038808","https://openalex.org/W2804578955","https://openalex.org/W2905493497","https://openalex.org/W2788421262","https://openalex.org/W7064079646","https://openalex.org/W2802249471","https://openalex.org/W2181807305","https://openalex.org/W114913519","https://openalex.org/W4412330966"],"abstract_inverted_index":{"<!--HTML-->":[0],"The":[1,26,50],"ALPHA":[2,55],"experiment":[3],"at":[4,54],"the":[5,23,35,65,80,85,90,93,100,107,117,127],"Antiproton":[6],"Decelerator":[7],"is":[8,56,79,89],"unique":[9],"in":[10,40,52,73,111,126,141],"its":[11],"combined":[12],"ability":[13],"to":[14,105,139],"produce,":[15],"trap,":[16],"and":[17,32,121],"study":[18,86],"atoms":[19],"of":[20,47,58,70,76,83,87,92,102,119,129,143],"antihydrogen":[21,33,53,125],"-":[22],"simplest":[24],"anti-atom.":[25],"Standard":[27],"Model":[28],"requires":[29],"that":[30],"hydrogen":[31,41],"have":[34],"same":[36],"spectrum.":[37],"Transition":[38],"frequencies":[39],"can":[42],"be":[43],"measured":[44],"with":[45,124],"precisions":[46],"order":[48,59],"10-15.":[49],"precision":[51],"now":[57],"10-12,":[60],"making":[61],"atom/anti-atom":[62],"comparisons":[63],"among":[64],"most":[66],"precise,":[67],"direct":[68],"tests":[69],"fundamental":[71,77],"symmetries":[72],"Nature.":[74],"Also":[75],"interest":[78],"gravitational":[81,122],"behaviour":[82],"antimatter,":[84],"which":[88,135],"goal":[91],"new":[94,132],"ALPHA-g":[95],"experiment.":[96],"I":[97,113],"will":[98,114,136],"discuss":[99],"decades":[101],"development":[103],"necessary":[104],"achieve":[106],"latest":[108],"groundbreaking":[109],"results":[110],"ALPHA.":[112],"then":[115],"consider":[116],"future":[118],"spectroscopy":[120],"studies":[123],"era":[128],"CERN\u2019s":[130],"brand":[131],"ELENA":[133],"facility,":[134],"deliver":[137],"antiprotons":[138],"us":[140],"August":[142],"2021.":[144]},"counts_by_year":[],"updated_date":"2026-10-12T09:40:04.860316","created_date":"2025-10-10T00:00:00"}
