Browsing by Author "Wu, D. R."

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Improved Constraints on Sterile Neutrino Mixing from Disappearance Searches in the MINOS, MINOS+, Daya Bay, and Bugey-3 Experiments
(2020-08-10)
Adamson, P.
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An, F. P.
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Anghel, I.
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Aurisano, A.
;
Balantekin, A. B.
Searches for electron antineutrino, muon neutrino, and muon antineutrino disappearance driven by sterile neutrino mixing have been carried out by the Daya Bay and MINOS+ collaborations. This Letter presents the combined results of these searches, along with exclusion results from the Bugey-3 reactor experiment, framed in a minimally extended four-neutrino scenario. Significantly improved constraints on the theta(mu e) mixing angle are derived that constitute the most constraining limits to date over five orders of magnitude in the mass-squared splitting Delta m(41)(2), excluding the 90% C.L. sterile-neutrino parameter space allowed by the LSND and MiniBooNE observations at 90% CLs for Delta m(41)(2) < 13 eV(2). Furthermore, the LSND and MiniBooNE 99% C.L. allowed regions are excluded at 99% CLs for Delta m(41)(2) < 1.6 eV(2).
Single-photon avalanche diodes in 0.18-mu m high-voltage CMOS technology
(2017-06-12)
Huang, L. D.
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Wu, J. Y.
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Wang, J. P.
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Tsai, C. M.
;
Huang, Y. H.
We have designed and fabricated high-performance single-photon avalanche diodes (SPADs) by using 0.18-mu m high-voltage CMOS technology. Without any technology customization. the SPADs have low dark-count rate, high photon-detection probability, low afterpulsing probability, and acceptable timing jitter and breakdown voltage. Our design provides a low-cost and high-performance SPAD for various applications. (C) 2017 Optical Society of America