Light yield in DarkSide-10: A prototype two-phase argon TPC for dark matter searches

T. Alexander; D. Alton; K. Arisaka; H. O. Back; P. Beltrame; J. Benziger; G. Bonfini; A. Brigatti; J. Brodsky; L. Cadonati; F. Calaprice; A. Candela; H. Cao; P. Cavalcante; A. Chavarria; A. Chepurnov; D. Cline; A. G. Cocco; C. Condon; D. D'Angelo; S. Davini; E. De Haas; A. Derbin; G. Di Pietro; I. Dratchnev; D. Durben; A. Empl; A. Etenko; A. Fan; G. Fiorillo; K. Fomenko; F. Gabriele; C. Galbiati; S. Gazzana; C. Ghag; C. Ghiano; A. Goretti; L. Grandi; M. Gromov; M. Guan; C. Guo; G. Guray; E. V. Hungerford; Al Ianni; An Ianni; A. Kayunov; K. Keeter; C. Kendziora; S. Kidner; V. Kobychev

doi:10.1016/j.astropartphys.2013.08.004

Light yield in DarkSide-10: A prototype two-phase argon TPC for dark matter searches

T. Alexander, D. Alton, K. Arisaka, H. O. Back, P. Beltrame, J. Benziger, G. Bonfini, A. Brigatti, J. Brodsky, L. Cadonati, F. Calaprice, A. Candela, H. Cao, P. Cavalcante, A. Chavarria, A. Chepurnov, D. Cline, A. G. Cocco, C. Condon, D. D'AngeloS. Davini, E. De Haas, A. Derbin, G. Di Pietro, I. Dratchnev, D. Durben, A. Empl, A. Etenko, A. Fan, G. Fiorillo, K. Fomenko, F. Gabriele, C. Galbiati, S. Gazzana, C. Ghag, C. Ghiano, A. Goretti, L. Grandi, M. Gromov, M. Guan, C. Guo, G. Guray, E. V. Hungerford, Al Ianni, An Ianni, A. Kayunov, K. Keeter, C. Kendziora, S. Kidner, V. Kobychev

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Abstract

As part of the DarkSide program of direct dark matter searches using two-phase argon TPCs, a prototype detector with an active volume containing 10 kg of liquid argon, DarkSide-10, was built and operated underground in the Gran Sasso National Laboratory in Italy. A critically important parameter for such devices is the scintillation light yield, as photon statistics limits the rejection of electron-recoil backgrounds by pulse shape discrimination. We have measured the light yield of DarkSide-10 using the readily-identifiable full-absorption peaks from gamma ray sources combined with single-photoelectron calibrations using low-occupancy laser pulses. For gamma lines of energies in the range 122-1275 keV, we get light yields averaging 8.887±0.003(stat) ±0.444(sys) p.e./keV_ee. With additional purification, the light yield measured at 511 keV increased to 9.142±0.006(stat) p.e./keV_ee.

Original language	English (US)
Pages (from-to)	44-51
Number of pages	8
Journal	Astroparticle Physics
Volume	49
DOIs	https://doi.org/10.1016/j.astropartphys.2013.08.004
State	Published - 2013

Bibliographical note

Funding Information:
We acknowledge support from the NSF (US, Grants PHY-0919363, PHY-1004072, and associated collaborative Grants), DOE (US, Contract Nos. DE-FG02–91ER40671 and DE-AC02–07CH11359), and the Istituto Nazionale di Fisica Nucleare (Italy).

Keywords

Argon Time projection chamber
Dark matter
Light yield
Photoelectron yield

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Alexander, T., Alton, D., Arisaka, K., Back, H. O., Beltrame, P., Benziger, J., Bonfini, G., Brigatti, A., Brodsky, J., Cadonati, L., Calaprice, F., Candela, A., Cao, H., Cavalcante, P., Chavarria, A., Chepurnov, A., Cline, D., Cocco, A. G., Condon, C., ... Kobychev, V. (2013). Light yield in DarkSide-10: A prototype two-phase argon TPC for dark matter searches. Astroparticle Physics, 49, 44-51. https://doi.org/10.1016/j.astropartphys.2013.08.004

Alexander, T, Alton, D, Arisaka, K, Back, HO, Beltrame, P, Benziger, J, Bonfini, G, Brigatti, A, Brodsky, J, Cadonati, L, Calaprice, F, Candela, A, Cao, H, Cavalcante, P, Chavarria, A, Chepurnov, A, Cline, D, Cocco, AG, Condon, C, D'Angelo, D, Davini, S, De Haas, E, Derbin, A, Di Pietro, G, Dratchnev, I, Durben, D, Empl, A, Etenko, A, Fan, A, Fiorillo, G, Fomenko, K, Gabriele, F, Galbiati, C, Gazzana, S, Ghag, C, Ghiano, C, Goretti, A, Grandi, L, Gromov, M, Guan, M, Guo, C, Guray, G, Hungerford, EV, Ianni, A, Ianni, A, Kayunov, A, Keeter, K, Kendziora, C, Kidner, S & Kobychev, V 2013, 'Light yield in DarkSide-10: A prototype two-phase argon TPC for dark matter searches', Astroparticle Physics, vol. 49, pp. 44-51. https://doi.org/10.1016/j.astropartphys.2013.08.004

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title = "Light yield in DarkSide-10: A prototype two-phase argon TPC for dark matter searches",

abstract = "As part of the DarkSide program of direct dark matter searches using two-phase argon TPCs, a prototype detector with an active volume containing 10 kg of liquid argon, DarkSide-10, was built and operated underground in the Gran Sasso National Laboratory in Italy. A critically important parameter for such devices is the scintillation light yield, as photon statistics limits the rejection of electron-recoil backgrounds by pulse shape discrimination. We have measured the light yield of DarkSide-10 using the readily-identifiable full-absorption peaks from gamma ray sources combined with single-photoelectron calibrations using low-occupancy laser pulses. For gamma lines of energies in the range 122-1275 keV, we get light yields averaging 8.887±0.003(stat) ±0.444(sys) p.e./keVee. With additional purification, the light yield measured at 511 keV increased to 9.142±0.006(stat) p.e./keVee.",

keywords = "Argon Time projection chamber, Dark matter, Light yield, Photoelectron yield",

author = "T. Alexander and D. Alton and K. Arisaka and Back, {H. O.} and P. Beltrame and J. Benziger and G. Bonfini and A. Brigatti and J. Brodsky and L. Cadonati and F. Calaprice and A. Candela and H. Cao and P. Cavalcante and A. Chavarria and A. Chepurnov and D. Cline and Cocco, {A. G.} and C. Condon and D. D'Angelo and S. Davini and {De Haas}, E. and A. Derbin and {Di Pietro}, G. and I. Dratchnev and D. Durben and A. Empl and A. Etenko and A. Fan and G. Fiorillo and K. Fomenko and F. Gabriele and C. Galbiati and S. Gazzana and C. Ghag and C. Ghiano and A. Goretti and L. Grandi and M. Gromov and M. Guan and C. Guo and G. Guray and Hungerford, {E. V.} and Al Ianni and An Ianni and A. Kayunov and K. Keeter and C. Kendziora and S. Kidner and V. Kobychev",

note = "Funding Information: We acknowledge support from the NSF (US, Grants PHY-0919363, PHY-1004072, and associated collaborative Grants), DOE (US, Contract Nos. DE-FG02–91ER40671 and DE-AC02–07CH11359), and the Istituto Nazionale di Fisica Nucleare (Italy). ",

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T2 - A prototype two-phase argon TPC for dark matter searches

AU - Alexander, T.

AU - Alton, D.

AU - Arisaka, K.

AU - Back, H. O.

AU - Beltrame, P.

AU - Benziger, J.

AU - Bonfini, G.

AU - Brigatti, A.

AU - Brodsky, J.

AU - Cadonati, L.

AU - Calaprice, F.

AU - Candela, A.

AU - Cao, H.

AU - Cavalcante, P.

AU - Chavarria, A.

AU - Chepurnov, A.

AU - Cline, D.

AU - Cocco, A. G.

AU - Condon, C.

AU - D'Angelo, D.

AU - Davini, S.

AU - De Haas, E.

AU - Derbin, A.

AU - Di Pietro, G.

AU - Dratchnev, I.

AU - Durben, D.

AU - Empl, A.

AU - Etenko, A.

AU - Fan, A.

AU - Fiorillo, G.

AU - Fomenko, K.

AU - Gabriele, F.

AU - Galbiati, C.

AU - Gazzana, S.

AU - Ghag, C.

AU - Ghiano, C.

AU - Goretti, A.

AU - Grandi, L.

AU - Gromov, M.

AU - Guan, M.

AU - Guo, C.

AU - Guray, G.

AU - Hungerford, E. V.

AU - Ianni, Al

AU - Ianni, An

AU - Kayunov, A.

AU - Keeter, K.

AU - Kendziora, C.

AU - Kidner, S.

AU - Kobychev, V.

N1 - Funding Information: We acknowledge support from the NSF (US, Grants PHY-0919363, PHY-1004072, and associated collaborative Grants), DOE (US, Contract Nos. DE-FG02–91ER40671 and DE-AC02–07CH11359), and the Istituto Nazionale di Fisica Nucleare (Italy).

PY - 2013

Y1 - 2013

N2 - As part of the DarkSide program of direct dark matter searches using two-phase argon TPCs, a prototype detector with an active volume containing 10 kg of liquid argon, DarkSide-10, was built and operated underground in the Gran Sasso National Laboratory in Italy. A critically important parameter for such devices is the scintillation light yield, as photon statistics limits the rejection of electron-recoil backgrounds by pulse shape discrimination. We have measured the light yield of DarkSide-10 using the readily-identifiable full-absorption peaks from gamma ray sources combined with single-photoelectron calibrations using low-occupancy laser pulses. For gamma lines of energies in the range 122-1275 keV, we get light yields averaging 8.887±0.003(stat) ±0.444(sys) p.e./keVee. With additional purification, the light yield measured at 511 keV increased to 9.142±0.006(stat) p.e./keVee.

AB - As part of the DarkSide program of direct dark matter searches using two-phase argon TPCs, a prototype detector with an active volume containing 10 kg of liquid argon, DarkSide-10, was built and operated underground in the Gran Sasso National Laboratory in Italy. A critically important parameter for such devices is the scintillation light yield, as photon statistics limits the rejection of electron-recoil backgrounds by pulse shape discrimination. We have measured the light yield of DarkSide-10 using the readily-identifiable full-absorption peaks from gamma ray sources combined with single-photoelectron calibrations using low-occupancy laser pulses. For gamma lines of energies in the range 122-1275 keV, we get light yields averaging 8.887±0.003(stat) ±0.444(sys) p.e./keVee. With additional purification, the light yield measured at 511 keV increased to 9.142±0.006(stat) p.e./keVee.

KW - Argon Time projection chamber

KW - Dark matter

KW - Light yield

KW - Photoelectron yield

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UR - http://www.scopus.com/inward/citedby.url?scp=84884582913&partnerID=8YFLogxK

U2 - 10.1016/j.astropartphys.2013.08.004

DO - 10.1016/j.astropartphys.2013.08.004

M3 - Article

AN - SCOPUS:84884582913

SN - 0927-6505

VL - 49

SP - 44

EP - 51

JO - Astroparticle Physics

JF - Astroparticle Physics

ER -

Light yield in DarkSide-10: A prototype two-phase argon TPC for dark matter searches

Abstract

Bibliographical note

Keywords

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