标题： 一种用于暗物质探测的过热液滴探测器 显示英文标题

标题： A Superheated Droplet Detector for Dark Matter Search

摘要： 我们讨论了基于过热二氟二氯甲烷（Freon-12）液滴的探测器的工作原理及其用于寻找弱相互作用冷暗物质粒子的可行性。特别是，我们关注的是质量范围从10到10⁴ GeV/c²且灵敏度优于10⁻²事件/(kg·天)的中性子搜索实验。我们证明，我们新提出的探测器可以在环境压力和室温下以一种仅对中性子相互作用后产生的核反冲敏感的模式运行，这使得背景干扰可以有效区分。这种技术的一个额外优势在于，探测材料二氟二氯甲烷价格低廉且可大量获得。此外，我们还证明压电换能器允许在大体积中高效定位事件。 显示英文摘要

摘要： We discuss the operation principle of a detector based on superheated droplets of Freon-12 and its feasibility for the search of weakly interacting cold dark matter particles. In particular we are interested in a neutralino search experiment in the mass range from 10 to 10^4 GeV/c^2 and with a sensitivity of better than 10^-2 events/kg/d. We show that our new proposed detector can be operated at ambient pressure and room temperature in a mode where it is exclusively sensitive to nuclear recoils like those following neutralino interactions, which allows a powerful background discrimination. An additional advantage of this technique is due to the fact that the detection material, Freon-12, is cheap and readily available in large quantities. Moreover we were able to show that piezoelectric transducers allow efficient event localization in large volumes.