CALIS—A CALibration Insertion System for the DarkSide-50 dark matter search experiment

Agnes, P.; Albuquerque, I. F. M.; Alexander, T.; Alton, A.; Asner, D. M.; Back, H. O.; Baldin, B.; Biery, K.; Bocci, V.; Bonfini, G.; Bonivento, W.; Bossa, M.; Bottino, B.; Brigatti, A.; Brodsky, J.; Budano, F.; Bussino, S.; Cadeddu, M.; Cadonati, L.; Cadoni, Mariano; Calaprice, F.; Canci, N.; Candela, A.; Caravati, M.; Cariello, M.; Carlini, M.; Catalanotti, S.; Cavalcante, P.; Chepurnov, A.; Cicalò, C.; Cocco, A. G.; Covone, G.; D’Angelo, D.; D’Incecco, M.; Davini, S.; Cecco, S. De; Deo, M. De; Vincenzi, M. De; Derbin, A.; Devoto, A.; Eusanio, F. Di; Pietro, G. Di; Dionisi, C.; Edkins, E.; Empl, A.; Fan, A.; Fiorillo, G.; Fomenko, K.; Forster, G.; Franco, D.; Gabriele, F.; Galbiati, C.; Giagu, S.; Giganti, C.; Giovanetti, G. K.; Goretti, A.; Granato, F.; Grandi, L.; Gromov, M.; Guan, Mengyun; Guardincerri, Y.; Hackett, B. R.; Herner, K.; Hughes, Donald J.; Humble, P.; Hungerford, E.; Ianni, A.; Ianni, An.; James, I.; Johnson, T.; Jollet, C.; Keeter, K. J.; Kendziora, C. L.; Koh, G.; Korablëv, D.; Korga, G.; Kubankin, A. S.; Li, X.; Lissia, M.; Loer, B.; Lombardi, P.; Longo, Giuseppe; Ma, Y.; Machado, A. A.; Machulin, I.; Mandarano, A.; Mari, Stefano Maria; Maricic, J.; Marini, L.; Martoff, C. J.; Meregaglia, A.; Meyers, P. D.; Milinčić, R.; Miller, J.; Montanari, D.; Monte, A.; Mount, B. J.; Muratova, V.; Musico, P.; Napolitano, J.; Agasson, A. Navrer; Odrowski, S.; Orsini, M.; Ortica, F.; Pagani, L.; Pallavicini, M.; Pantic, E.; Parmeggiano, S.; Pelczar, K.; Pelliccia, N.; Pocar, A.; Pordes, S.; Pugachev, D. A.; Qian, Hao; Randle, K.; Ranucci, G.; Razeti, M.; Razeto, A.; Reinhold, B.; Renshaw, A.; Rescigno, M.; Riffard, Q.; Romani, A.; Rossi, B.; Rossi, N.; Rountree, S. D.; Sablone, D.; Saggese, Paolo; Saldanha, R.; Sands, W.; Savarese, C.; Schlitzer, B.; Segreto, E.; Semenov, D.; Shields, E.; Singh, Prabhjot; Skorokhvatov, M.; Smirnov, O.; Sotnikov, A.; Stanford, C.; Suvorov, Y.; Tartaglia, R.; Tatarowicz, J.; Testera, G.; Tonazzo, A.; Trinchese, P.; Unzhakov, E.; Verducci, M.; Vishneva, A.; Vogelaar, B.; Wada, M.; Walker, Susan; Wang, H.; Wang, Y.; Watson, A.; Westerdale, S.; Wilhelmi, J.; Wójcik, Marcin; Xiang, X.; Xiao, Xiang; Xu, J.; Yang, Changgen; Zec, A.; Zhong, Weili; Zhu, C.; Zuzel, G.

doi:10.1088/1748-0221/12/12/t12004

Cited by 20 publications

(24 citation statements)

References 10 publications

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“…Radioactive calibration sources for the characterization of the TPC and LSV are deployed through the WCV and LSV to the side of the cryostat using an articulated arm described in Ref. [8].…”

Section: The Darkside-50 Detectorsmentioning

confidence: 99%

DarkSide-50 532-day dark matter search with low-radioactivity argon

Agnes¹,

Albuquerque²,

Alexander³

et al. 2018

Phys. Rev. D

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243

219

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The DarkSide-50 direct-detection dark matter experiment is a dual-phase argon time projection chamber operating at Laboratori Nazionali del Gran Sasso. This paper reports on the blind analysis of a (16 660 ± 270) kg d exposure using a target of low-radioactivity argon extracted from underground sources. We find no events in the dark matter selection box and set a 90 % C.L. upper limit on the dark matter-nucleon spin-independent cross section of 1.14 × 10 −44 cm 2 (3.78 × 10 −44 cm 2 , 3.43 × 10 −43 cm 2 ) for a WIMP mass of 100 GeV/c 2 (1 TeV/c 2 , 10 TeV/c 2 ).

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Section: The Darkside-50 Detectorsmentioning

confidence: 99%

DarkSide-50 532-day dark matter search with low-radioactivity argon

Agnes¹,

Albuquerque²,

Alexander³

et al. 2018

Phys. Rev. D

Self Cite

243

219

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“…A calibration campaign, following the first dark matter search, was started with the aim to perform a characterization of the detector response, a detection efficiency and an energy calibration for both TPC and LSV. To this purpose, a dedicated calibration hardware was installed in the DS-50 detector, allowing for the placement of several gamma ( 57 Co, 133 Ba, 137 Cs, 22 Na) and neutron sources (AmBe, AmC) in the LSV next to the TPC cryostat [18]. Data acquisition showed an impressive stability reaching a trigger efficiency of ∼90% during the atmospheric argon campaign and up to 95% with the TPC filled with the UAr.…”

Section: Darkside-50 Stability and Performancesmentioning

confidence: 99%

Long term operation with the DarkSide-50 detector

Canci¹

2020

J. Inst.

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A: DarkSide is a staged experimental project based on radiopure argon aiming at direct dark matter detection. The DarkSide-50 (DS-50) detector is currently operating underground at the Gran Sasso National Laboratory. DS-50 detector is a dual-phase, 50 kg, liquid argon timeprojection-chamber readout by 38 cryogenic PMTs (Hamamatsu R11065), surrounded by an active liquid scintillator veto and contained in a water Cherenkov detector acting as a muon veto. DS-50 has been been operating continuously since 2013, first with atmospheric argon and subsequently filled in 2015 with argon from an underground source, allowing a reduction of the 39 Ar isotope by more than a factor 1000. Features of the DS-50 detector are described, long term operations and stability are reported and its performances in scintillation light detection discussed. Results on dark matter searches obtained with DarkSide-50 detector are briefly reported.

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“…In addition to modeling energy deposits and optics, the DarkSide-50 electronics may also be simulated, allowing for analysis of the full reconstruction chain [48]. Comparison between the S1 spectrum in the TPC from calibration with 57 Co and that produced by g4ds simulation [49]. Excellent agreement has been achieved for both single and multiple pulse events.…”

Section: Outer Detector Event Reconstructionmentioning

confidence: 99%

“…The goal of this calibration was to obtain a high statistics set of β + Figure 4.10: The 39m Kr peak, along with the 39 Ar background spectrum. Noted are the locations of the full absorption peaks of 57 Co, 133 Ba and 137 Co. [49] events for studying pulse shape discrimination in the TPC.…”

Section: August 2015mentioning

confidence: 99%

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Detailed Characterization of Nuclear Recoil Pulse Shape Discrimination in the DarkSide-50 Direct Dark Matter Experiment

Edkins¹

2017

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I want to express my appreciation and gratitude to my advisor, Dr. Jelena Maricic. Thank you for your support and constant encouragement. Your confidence in me has been a tremendous boost in times of doubt. I owe a special debt of gratitude to Bernd Reinhold, our post-doc during my research, who guided, argued with, tolerated and patiently instructed me until I could reasonably be called a scientist. I'm not sure what I would have done without you. A huge thank you to my fellow graduate student, friend and co-conspirator, Brianne Hackett, who has been by my side since the very beginning. Graduate school has been an amazing, world-traveling adventure, which I am so glad I was able to share with you. After all our journeys, you are truly like family to me. In my time at UH, there have been several professors who have been incredibly helpful to me. I am thankful to my committee members, Sandip Pakvasa and Olga Boric-Lubecke, for your time in getting me to this point. Thank you to Jason Kumar, whom I can always count on for a Star Wars "dark side" pun or a great movie reference, in addition to the answer to just about any physics question I could think of. I am grateful to have been able to have Xerxes Tata to teach me particle physics, who has gifted me not only with the clearest understanding of quantum mechanics anyone could hope for, but also with the knowledge of how to do my physics problems like a donkey. To John Learned, who responded to my graduate school inquiry, I owe sincerest thanks. You changed my life for the better, and I will never forget it. Working on DarkSide afforded me the opportunity to work with people from all over the world, many of whom have had a tremendous impact on me. I would like to thank Andrea Ianni, Augusto Goretti, Nicola Canci, Yura Suvorov and Marco Carlini, who supported and assisted during our multiple calibration campaigns. Your friendship and expertise were indispensable. A special thank you to Masayuki Wasa, who has always been readily available and willing to help, no matter how much was already on his plate. Thank you for never failing to answer my emails, regardless of time of day, and for all your patience with my endless questions. I am grateful for all the mentoring I received from the senior members of the collaboration, notably Peter Meyers and Emilija Pantic. Thank you for the long discussions via email and Skype, and all of your excellent feedback. I also want to thank our Paris Monte Carlo group, Davide Franco, Stefano Perasso and, especially, Paolo Agnes, for your help throughout my research experience. Thank you to Stephan Pordes for your piercing wit and great analysis questions. Your self-effacing manner belies an uncanny ability to provide real insight, which as a student I found truly useful. To my fellow DarkSide PhD students, Shawn Westerdale, Alden Fan, Andrew Watson and Luca Pagani, from whom I have benefited from both your collaboration and commiseration, thank you. Finally, I would not be here without the love and support of my family. I have always be...

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CALIS—A CALibration Insertion System for the DarkSide-50 dark matter search experiment

Cited by 20 publications

References 10 publications

DarkSide-50 532-day dark matter search with low-radioactivity argon

DarkSide-50 532-day dark matter search with low-radioactivity argon

Long term operation with the DarkSide-50 detector

Detailed Characterization of Nuclear Recoil Pulse Shape Discrimination in the DarkSide-50 Direct Dark Matter Experiment

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