R
R. Ajaj
Researcher at Carleton University
Publications - 4
Citations - 51
R. Ajaj is an academic researcher from Carleton University. The author has contributed to research in topics: Scintillation & Dark matter. The author has an hindex of 3, co-authored 4 publications receiving 24 citations.
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Journal ArticleDOI
SiPM-matrix readout of two-phase argon detectors using electroluminescence in the visible and near infrared range
Craig E. Aalseth,S. Abdelhakim,P. Agnes,R. Ajaj,Ivone F. M. Albuquerque,Thomas Alexander,Andrea Alici,A. K. Alton,Pierre-Andre Amaudruz,F. Ameli,J. Anstey,Pietro Antonioli,M. Arba,Silvia Arcelli,Raffaele Ardito,I. J. Arnquist,Pasquale Arpaia,D. M. Asner,A. Asunskis,M. Ave,H. O. Back,V. Barbaryan,A. Barrado Olmedo,G. Batignani,Maria Giuseppina Bisogni,V. Bocci,A.E. Bondar,A.E. Bondar,G. Bonfini,W. Bonivento,E. Borisova,E. Borisova,B. Bottino,M. G. Boulay,R. Bunker,S. Bussino,A. Buzulutskov,A. Buzulutskov,M. Cadeddu,Mariano Cadoni,A. Caminata,N. Canci,A. Candela,C. Cantini,M. Caravati,M. Cariello,F. Carnesecchi,A. Castellani,Paolo Castello,P. Cavalcante,D. Cavazza,Stefano Cavuoti,S. Cebrián,J. M. Cela Ruiz,B. Celano,R. Cereseto,S. Chashin,W. Cheng,A. S. Chepurnov,C. Cicalò,L. Cifarelli,Mauro Citterio,F. Coccetti,V. Cocco,Manuel Colocci,E. Conde Vilda,L. Consiglio,F. Cossio,Giovanni Covone,Paolo Crivelli,I. D'Antone,M. D'Incecco,M. Da Rocha Rolo,O. Dadoun,M. K. Daniel,S. Davini,S. De Cecco,M. De Deo,A. De Falco,D. De Gruttola,G. De Guido,G. De Rosa,G. Dellacasa,Pierfranco Demontis,S. De Pasquale,A. V. Derbin,A. Devoto,F. Di Eusanio,L. Di Noto,G. Di Pietro,P. Di Stefano,C. Dionisi,G. Dolganov,Francesca Dordei,M. Downing,F. Edalatfar,Anton Empl,M. Fernandez Diaz,C. Filip,G. Fiorillo,K. Fomenko,A. Franceschi,D. Franco,E. Frolov,E. Frolov,George E. Froudakis,N. Funicello,F. Gabriele,Andrea Gabrieli,Cristiano Galbiati,M. Garbini,P. Garcia Abia,D. Gascon Fora,A. Gendotti,C. Ghiano,Aldo Ghisi,P. Giampa,R. A. Giampaolo,C. Giganti,Mario Giorgi,G. K. Giovanetti,M. L. Gligan,O. Gorchakov,M. Grab,R. Graciani Diaz,Marco Grassi,Jay W. Grate,A. Grobov,A. Grobov,M. Gromov,M. Gromov,Min-Xin Guan,Marcelo Braga Bueno Guerra,M. Guerzoni,Marisa Gulino,R. K. Haaland,B. R. Hackett,A. L. Hallin,M. Haranczyk,B. Harrop,Eric W. Hoppe,S. Horikawa,B. Hosseini,Fabrice Hubaut,Paul H. Humble,E. V. Hungerford,An. Ianni,A. Ilyasov,A. Ilyasov,Valerio Ippolito,C. J. Jillings,K. J. Keeter,C. L. Kendziora,I. Kochanek,K. Kondo,Gillian Kopp,Denis Korablev,G. Korga,A. S. Kubankin,R. Kugathasan,M. Kuss,M. La Commara,L. La Delfa,M. Lai,M. Lebois,B. Lehnert,N. Levashko,N. Levashko,Xiujiang Li,Q. Liqiang,M. Lissia,G. U. Lodi,Giuseppe Longo,Rudi Lussana,Lelio Luzzi,A. A. Machado,I. N. Machulin,I. N. Machulin,A. Mandarano,S. Manecki,L. Mapelli,Anselmo Margotti,S. M. Mari,Mauro Mariani,J. Maricic,Mauro Marinelli,D. Marras,Mario Patricio Padilla Martínez,A. D. Martinez Rojas,Michele Mascia,J. Mason,Alberto Masoni,A. B. McDonald,Andrea Messina,T. Miletic,R. Milincic,A. Moggi,Stefania Moioli,Jocelyn Monroe,Matteo Morrocchi,T. Mroz,W. Mu,V. N. Muratova,S. Murphy,Carlo Muscas,Paolo Musico,Rosario Nania,T. Napolitano,A. Navrer Agasson,Marzio Nessi,I. Nikulin,V. Nosov,V. Nosov,J. A. Nowak,A. Oleinik,V. Oleynikov,V. Oleynikov,M. Orsini,Fausto Ortica,L. Pagani,Marco Pallavicini,Simonetta Palmas,Luciano Pandola,E. Pantic,E. Paoloni,F. Pazzona,S. J. M. Peeters,Paolo Attilio Pegoraro,K. Pelczar,Laura A. Pellegrini,C. Pellegrino,Nicomede Pelliccia,Federico Perotti,V. Pesudo,E. Picciau,F. Pietropaolo,A. Pocar,T. Pollmann,Davide Portaluppi,S. S. Poudel,Pascal Pralavorio,Darren Price,B. Radics,F. Raffaelli,Francesco Ragusa,M. Razeti,C. Regenfus,A. L. Renshaw,S. Rescia,M. Rescigno,F. Retiere,L. P. Rignanese,C. Ripoli,Angelo Rivetti,J. Rode,Aldo Romani,L. Romero,N. Rossi,André Rubbia,Paola Sala,Piero Salatino,O. Samoylov,E. Sanchez Garcia,E. Sandford,S. Sanfilippo,Marco Sant,D. Santone,R. Santorelli,C. Savarese,E. Scapparone,B. Schlitzer,Gilda Scioli,E. Segreto,Allen Seifert,D. A. Semenov,A.V. Shchagin,A. Sheshukov,S. Siddhanta,Marino Simeone,P. N. Singh,P. Skensved,M. D. Skorokhvatov,M. D. Skorokhvatov,O. Smirnov,G. Sobrero,Andrey Sokolov,Andrey Sokolov,A. Sotnikov,R. Stainforth,A. Steri,S. Stracka,V. Strickland,Giuseppe Baldovino Suffritti,Sara Sulis,Y. Suvorov,A. M. Szelc,R. Tartaglia,G. Testera,T. N. Thorpe,A. Tonazzo,Alberto Tosi,M. Tuveri,E. V. Unzhakov,G. L. Usai,Annalisa Vacca,E. Vázquez-Jáuregui,T. Viant,S. Viel,Federica Villa,A. Vishneva,R. B. Vogelaar,J. Wahl,J. Walding,Han Wang,Yanchu Wang,S. Westerdale,R. J. Wheadon,Richard M. Williams,J. A. Wilson,M. M. Wojcik,M. M. Wojcik,S. Wu,Xiang Xiao,Chung-Yao Yang,Z. Ye,M. Zuffa,G. Zuzel +326 more
TL;DR: In this article, the authors demonstrated two alternative techniques of the optical readout of two-phase argon detectors, in the visible and NIR range, using a silicon photomultiplier matrix and electroluminescence due to either neutral bremsstrahlung or avalanche scintillation.
Journal ArticleDOI
Design and construction of a new detector to measure ultra-low radioactive-isotope contamination of argon
Craig E. Aalseth,S. Abdelhakim,Fabio Acerbi,P. Agnes,R. Ajaj,Ivone F. M. Albuquerque,Thomas Alexander,Andrea Alici,A. K. Alton,Pierre-Andre Amaudruz,F. Ameli,J. Anstey,Pietro Antonioli,M. Arba,Silvia Arcelli,Raffaele Ardito,I. J. Arnquist,Pasquale Arpaia,D. M. Asner,A. Asunskis,M. Ave,H. O. Back,A. Barrado Olmedo,G. Batignani,Maria Giuseppina Bisogni,V. Bocci,A.E. Bondar,G. Bonfini,W. Bonivento,E. Borisova,B. Bottino,M. G. Boulay,R. Bunker,S. Bussino,A. Buzulutskov,M. Cadeddu,Mariano Cadoni,A. Caminata,N. Canci,A. Candela,C. Cantini,M. Caravati,M. Cariello,F. Carnesecchi,M. Carpinelli,A. Castellani,Paolo Castello,S. Catalanotti,Vittorio Cataudella,P. Cavalcante,D. Cavazza,Stefano Cavuoti,S. Cebrián,J. M. Cela Ruiz,B. Celano,R. Cereseto,W. Cheng,A. S. Chepurnov,C. Cicalò,L. Cifarelli,Mauro Citterio,A. G. Cocco,V. Cocco,Manuel Colocci,L. Consiglio,F. Cossio,Giovanni Covone,Paolo Crivelli,I. D'Antone,M. D'Incecco,D. D'Urso,M. Da Rocha Rolo,O. Dadoun,M. K. Daniel,S. Davini,A. de Candia,S. De Cecco,M. De Deo,A. De Falco,G. De Filippis,D. De Gruttola,G. De Guido,G. De Rosa,G. Dellacasa,Pierfranco Demontis,S. DePaquale,A. V. Derbin,A. Devoto,F. Di Eusanio,L. Di Noto,G. Di Pietro,P. Di Stefano,C. Dionisi,G. Dolganov,F. Dordei,M. Downing,F. Edalatfar,Anton Empl,M. Fernandez Diaz,Alessandro Ferri,C. Filip,G. Fiorillo,K. Fomenko,A. Franceschi,D. Franco,George E. Froudakis,F. Gabriele,Andrea Gabrieli,C. Galbiati,P. Garcia Abia,D. Gascon Fora,A. Gendotti,C. Ghiano,Aldo Ghisi,Stefano Giagu,P. Giampa,R. A. Giampaolo,C. Giganti,Mario Giorgi,G. K. Giovanetti,M. L. Gligan,Alberto Gola,O. Gorchakov,M. Grab,R. Graciani Diaz,F. Granato,Marco Grassi,Jay W. Grate,G. Y. Grigoriev,A. Grobov,M. Gromov,Min-Xin Guan,Marcelo Braga Bueno Guerra,M. Guerzoni,Marisa Gulino,R. K. Haaland,B. R. Hackett,A. L. Hallin,B. Harrop,Eric W. Hoppe,S. Horikawa,B. Hosseini,Fabrice Hubaut,Paul H. Humble,E. V. Hungerford,An. Ianni,A. Ilyasov,Valerio Ippolito,C. Jillings,K. J. Keeter,C. L. Kendziora,S. Kim,I. Kochanek,K. Kondo,G. Kopp,Denis Korablev,G. Korga,A. S. Kubankin,R. Kugathasan,M. Kuss,M. Kuźniak,M. La Commara,L. La Delfa,M. Lai,S. Langrock,M. Lebois,B. Lehnert,N. Levashko,Xiujiang Li,Q. Liqiang,M. Lissia,G. U. Lodi,Giuseppe Longo,R. López Manzano,Rudi Lussana,Lelio Luzzi,A. A. Machado,I. N. Machulin,A. Mandarano,L. Mapelli,M. Marcante,Anselmo Margotti,S. M. Mari,Mario Mariani,J. Maricic,Mauro Marinelli,D. Marras,Miriam Lucio Martinez,J. J. Martínez Morales,A. D. Martinez Rojas,C. J. Martoff,Michele Mascia,J. Mason,Alberto Masoni,A. Mazzi,A. B. McDonald,Andrea Messina,P. D. Meyers,T. Miletic,R. Milincic,A. Moggi,Stefania Moioli,Jocelyn Monroe,Matteo Morrocchi,T. Mroz,W. Mu,V. N. Muratova,S. Murphy,Carlo Muscas,Paolo Musico,Rosario Nania,T. Napolitano,A. Navrer Agasson,Marzio Nessi,I. Nikulin,A. Oleinik,V. Oleynikov,M. Orsini,Fausto Ortica,L. Pagani,Marco Pallavicini,Simonetta Palmas,Luciano Pandola,E. Pantic,E. Paoloni,Giovanni Paternoster,V. Pavletcov,F. Pazzona,S. J. M. Peeters,Paolo Attilio Pegoraro,K. Pelczar,Laura A. Pellegrini,C. Pellegrino,Nicomede Pelliccia,Federico Perotti,V. Pesudo,E. Picciau,C. Piemonte,F. Pietropaolo,A. Pocar,T. Pollman,Davide Portaluppi,S. S. Poudel,Pascal Pralavorio,Derek J. de Solla Price,B. Radics,F. Raffaelli,Francesco Ragusa,M. Razeti,A. Razeto,V. Regazzoni,C. Regenfus,A. L. Renshaw,S. Rescia,M. Rescigno,F. Retiere,L. P. Rignanese,Angelo Rivetti,Aldo Romani,L. Romero,N. Rossi,André Rubbia,D. Sablone,Paola Sala,Piero Salatino,O. Samoylov,E. Sanchez Garcia,S. Sanfilippo,Marco Sant,D. Santone,R. Santorelli,C. Savarese,E. Scapparone,B. Schlitzer,Gilda Scioli,E. Segreto,Allen Seifert,D. A. Semenov,A.V. Shchagin,A. Sheshukov,S. Siddhanta,Marino Simeone,P. N. Singh,P. Skensved,M. D. Skorokhvatov,O. Smirnov,G. Sobrero,Andrey Sokolov,A. Sotnikov,R. Stainforth,A. Steri,S. Stracka,V. Strickland,Giuseppe Baldovino Suffritti,Sara Sulis,Y. Suvorov,A. M. Szelc,R. Tartaglia,G. Testera,T. N. Thorpe,A. Tonazzo,Alberto Tosi,M. Tuveri,E. V. Unzhakov,G. L. Usai,Annalisa Vacca,E. Vázquez-Jáuregui,Monica Verducci,T. Viant,S. Viel,Federica Villa,A. Vishneva,R. B. Vogelaar,M. Wada,J. Wahl,J. Walding,Hui Wang,Yufeng Wang,S. Westerdale,R. J. Wheadon,Richard M. Williams,J. A. Wilson,Marcin Wójcik,Mariusz Wojcik,S. Wu,Xiang Xiao,Chung-Yao Yang,Z. Ye,M. Zuffa,G. Zuzel +329 more
TL;DR: The DArT in ArDM experiment as mentioned in this paper is a small chamber made with extremely radio-pure materials that will be placed at the centre of the ArDM detector, in the Canfranc Underground Laboratory (LSC) in Spain.
Journal ArticleDOI
The liquid-argon scintillation pulseshape in DEAP-3600
P. Adhikari,R. Ajaj,G. R. Araujo,M. Batygov,B. Beltran,C. E. Bina,Mark Guy Boulay,Mark Guy Boulay,B. Broerman,J. F. Bueno,A. Butcher,Bei Cai,Bei Cai,Miguel Cárdenas-Montes,Stefano Cavuoti,Y. Chen,B. T. Cleveland,J. M. Corning,S. J. Daugherty,P. Di Stefano,K. Dering,Luca Doria,F. A. Duncan,Monica Dunford,A. Erlandson,A. Erlandson,N. Fatemighomi,G. Fiorillo,A. Flower,A. Flower,R. Ford,R. Gagnon,D. Gallacher,E. A. Garcés,P. Garcia Abia,S. Garg,P. Giampa,P. Giampa,D. Goeldi,V. V. Golovko,P. Gorel,K. Graham,Darren Grant,A. Grobov,A. Grobov,A. L. Hallin,M. Hamstra,M. Hamstra,P. J. Harvey,C. Hearns,A. Ilyasov,A. Ilyasov,A. Joy,C. J. Jillings,O. Kamaev,G. Kaur,A. Kemp,I. Kochanek,M. Kuźniak,M. Kuźniak,S. Langrock,F. La Zia,B. Lehnert,N. Levashko,N. Levashko,X. Li,O. Litvinov,J. Lock,Giuseppe Longo,I. N. Machulin,I. N. Machulin,P. Majewski,A. B. McDonald,T. McElroy,T. McGinn,T. McGinn,J. B. McLaughlin,J. B. McLaughlin,R. Mehdiyev,C. Mielnichuk,Jocelyn Monroe,P. Nadeau,C. Nantais,C. Ng,A. J. Noble,G. Oliviéro,C. Ouellet,S. Pal,P. Pasuthip,S. J. M. Peeters,V. Pesudo,M. C. Piro,T. Pollmann,E. T. Rand,C. Rethmeier,F. Retiere,E. Sanchez Garcia,T. Sánchez-Pastor,R. Santorelli,N. Seeburn,P. Skensved,B. Smith,N. J. T. Smith,T. Sonley,R. Stainforth,C. Stone,V. Strickland,V. Strickland,M. Stringer,Bhaskar Sur,E. Vázquez-Jáuregui,E. Vázquez-Jáuregui,Laurelle Maria Veloce,S. Viel,J. Walding,M. Waqar,Martin Ward,S. Westerdale,J. Willis,A. Zuñiga-Reyes +119 more
TL;DR: In this paper, the authors present a model for the pulseshape of electromagnetic background events in the energy region of interest for dark matter searches, which is composed of LAr scintillation physics, including the so-called intermediate component, the time response of the TPB wavelength shifter, including delayed TPB emission at $${\mathcal {O}}$(m) time-scales, and the PMT response.
Journal ArticleDOI
Pulse-shape discrimination against low-energy Ar-39 beta decays in liquid argon with 4.5 tonne-years of DEAP-3600 data
P. Adhikari,R. Ajaj,M. Alpízar-Venegas,Pierre-Andre Amaudruz,D. J. Auty,M. Batygov,B. Beltran,H. Benmansour,C. E. Bina,J. Bonatt,W. Bonivento,M. G. Boulay,B. Broerman,J. F. Bueno,P. M. Burghardt,A. Butcher,M. Cadeddu,B. Cai,Miguel Cárdenas-Montes,Stefano Cavuoti,Min Chen,Y. Chen,B. T. Cleveland,J. M. Corning,D. Cranshaw,S. J. Daugherty,P. DelGobbo,K. Dering,J. DiGioseffo,P. Di Stefano,Luca Doria,F. A. Duncan,Monica Dunford,E. Ellingwood,A. Erlandson,S. S. Farahani,N. Fatemighomi,G. Fiorillo,S. Florian,T. Flower,R. Ford,R. Gagnon,D. Gallacher,P. Garcia Abia,S. Garg,P. Giampa,D. Goeldi,V. V. Golovko,P. Gorel,K. Graham,Darren Grant,A. Grobov,A. L. Hallin,M. Hamstra,P. J. Harvey,C. Hearns,T. Hugues,A. Ilyasov,A. Joy,B. Jigmeddorj,C. J. Jillings,O. Kamaev,G. Kaur,A. A. Kemp,I. Kochanek,M. Kuźniak,M. Lai,S. Langrock,B. Lehnert,A. Leonhardt,N. Levashko,Xiujiang Li,J. Lidgard,T. Lindner,M. Lissia,J. Lock,Giuseppe Longo,I. N. Machulin,A. B. McDonald,T. McElroy,T. McGinn,J. B. McLaughlin,R. Mehdiyev,C. Mielnichuk,Jocelyn Monroe,P. Nadeau,C. Nantais,C. Ng,A. J. Noble,E. O'Dwyer,G. Oliviéro,C. Ouellet,S. Pal,P. Pasuthip,S. J. M. Peeters,M. Perry,V. Pesudo,E. Picciau,M. C. Piro,T. Pollmann,E. T. Rand,C. Rethmeier,F. Retiere,I. Rodríguez-García,L. Roszkowski,J. B. Ruhland,E. Sánchez-García,R. Santorelli,D. Sinclair,P. Skensved,B. Smith,N. J. T. Smith,T. Sonley,J. Soukup,R. Stainforth,C. Stone,V. Strickland,M. Stringer,Bhaskar Sur,J. Tang,E. Vázquez-Jáuregui,S. Viel,J. Walding,M. Waqar,Martin Ward,S. Westerdale,J. Willis,A. Zuñiga-Reyes +127 more
TL;DR: In this article, the authors used two types of PSD estimator: the prompt fraction, which considers the fraction of the scintillation signal in a narrow and a wide time window around the event peak, and the log-likelihood-ratio, which compares the observed photon arrival times to a signal and a background model.