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Rajala, A; Cortez, A; Hofmann, H; Jornet, A; Lotz-Sisitka, H; Markauskaite, L (Ed.)Free, publicly-accessible full text available June 13, 2026
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There has been a large push in education over the last decade to drive STEM learning interest during the formative years of adolescence through the usage of engaging computer science related initiatives such as computational makerspaces that allow students to design and build a wide array of personally connected artifacts. But for these initiatives to work, students must be interested in the journey, and the curricula that drive many of these programs are not often designed to be culturally relevant to many of the students they are aimed at motivating. This paper investigated how computational making curricula can be designed in a reflexive and culturally supportive manner by following the trajectory and tensions faced by a black middle school student as he makes his way through the first iteration of such a space.more » « less
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Abstract The EXO-200 experiment searched for neutrinoless double-beta decay of 136 Xe with a single-phase liquid xenon detector. It used an active mass of 110 kg of 80.6%-enriched liquid xenon in an ultra-low background time projection chamber with ionization and scintillation detection and readout. This paper describes the design and performance of the various support systems necessary for detector operation, including cryogenics, xenon handling, and controls. Novel features of the system were driven by the need to protect the thin-walled detector chamber containing the liquid xenon, to achieve high chemical purity of the Xe, and to maintain thermal uniformity across the detector.more » « less
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