A new generation of resistive plate chambers, capable of withstanding high particle fluxes (up to 2000 Hz cm^-2) and instrumented with precise timing readout electronics is proposed to equip two of the four high pseudorapidity stations of the CMS muon system. Double-gap RPC detectors, with each gap made of two 1.4 mm High Pressure Laminate electrodes and separated by a gas gap of the same thickness, are proposed. The new layout reduces the amount of the avalanche charge produced by the passage of a charged particle through the detector. This improves the RPC rate capability by reducing the needed time to collect this charge. To keep the RPC efficiency high, a sensitive, low-noise and high time resolution front-end electronics is needed to cope with the lower charge signal of the new RPC. An ASIC called PETIROC that has all these characteristics has been selected to read out the strips of new chambers. Thin (0.6 mm) printed circuit board, 160 cm long, equipped with pickup strips of 0.75 cm average pitch, will be inserted between the two new RPC's gaps. The strips will be read out from both ends, and the arrival time difference of the two ends will be used to determine the hit position along the strip. Results from the improved RPC equipped with the new readout system and exposed to cosmic muons in the high irradiation environment at CERN GIF++ facility are presented in this work.

新一代电阻板室，能够承受高粒子通量（高达 2000 Hz cm ^-2) 并配备了精确的计时读出电子设备，以装备 CMS 介子系统的四个高赝快速站中的两个。提出了双间隙 RPC 探测器，每个间隙由两个 1.4 毫米高压层压电极制成，并由相同厚度的气隙隔开。新布局减少了带电粒子通过探测器时产生的雪崩电荷量。这通过减少收取此费用所需的时间来提高 RPC 速率能力。为了保持 RPC 的高效率，需要一个灵敏、低噪声和高时间分辨率的前端电子设备来应对新 RPC 的较低电荷信号。已选择具有所有这些特性的称为 PETIROC 的 ASIC 来读取新室的条带。薄（0.6 毫米）印刷电路板，160 厘米长，配备平均间距为 0.75 厘米的拾音条，将插入两个新 RPC 的间隙之间。从两端读出条带，利用两端的到达时间差来确定沿条带的命中位置。这项工作展示了配备新读出系统并在 CERN GIF++ 设施的高辐射环境中暴露于宇宙 μ 子的改进型 RPC 的结果。