论文标题
基于MEG II实验的钻石样碳电极开发超低质量和高速RPC
Development of ultra-low mass and high-rate capable RPC based on Diamond-Like Carbon electrodes for MEG II experiment
论文作者
论文摘要
在MEG II实验中，正在开发一种基于钻石样碳的薄膜电极的新型电阻板室正在开发中，以供背景识别。该探测器安装在低摩肌和高强度的隆隆梁中，必须具有极低的质量和高速率能力。构建并评估了一个具有2厘米$ 2 $ 2 cm $ 2 cm的单层原型检测器，其高速率能力为1 MHz/cm $^2 $ low momentum muons。为了提高检测器尺寸的速率能力和可扩展性，通过在钻石样碳上实现导电模式，以1 cm的螺距分段提供高压的电极。使用新电极，构建了一个四层原型检测器并评估为46％的检测效率，仅一个单层以$ \ cal o $ $ $（10 kHz）的速度活跃。新电极的结果有望以4 MHz/cm $^2 $的速率达到90％的所需检测效率，所有层都有活跃。
A new type of resistive plate chamber with thin-film electrodes based on diamond-like carbon is under development for background identification in the MEG II experiment. Installed in a low-momentum and high-intensity muon beam, the detector is required to have extremely low mass and a high rate capability. A single-layer prototype detector with 2 cm $\times$ 2 cm size was constructed and evaluated to have a high rate capability of 1 MHz/cm$^2$ low-momentum muons. For a higher rate capability and scalability of the detector size, the electrodes to supply high voltage were segmented at a 1 cm pitch by implementing a conductive pattern on diamond-like carbon. Using the new electrodes, a four-layer prototype detector was constructed and evaluated to have a 46% detection efficiency with only a single layer active at a rate of $\cal O$(10 kHz). The result with the new electrodes is promising to achieve the required detection efficiency of 90% at a rate of 4 MHz/cm$^2$ with all the layers active.
