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arXiv physics/0212011physics.ins-det
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PIBETA探测器组件的辐射硬度

Radiation hardness of the PIBETA detector components

E. Frlez, T. A. Campbell, I. J. Carey, D. Pocanic

摘要:

我们已经研究了信号幅度增益,能量分辨率和探测效率的PIBETA探测器系统的有源组件的长期变化。束定义塑料闪烁计数器在~1 MHz停止$π^+$束中运行297天,累积辐射剂量高达2 Mrad。带电粒子跟踪系统中的探测器-一对圆柱形多丝正比室和一个薄的塑料闪烁筒形hodoscope阵列-在相同的运行期间受到照射,平均剂量为~40 krad。单个CsI(未掺杂晶体)量热计探测器接收到的平均剂量约为120 rad,主要来自$π^+$强子相互作用以及活动靶中静止时的$π^+$和$μ^+$弱衰变产生的光子、正电子和质子。

英文摘要:

We have examined long term changes in signal amplitude gain, energy resolution and detection efficiency for the active components of the PIBETA detector system. Beam defining plastic scintillation counters were operated in a ~1 MHz stopped $π^+$ beam for a period of 297 days, accumulating radiation doses of up to 2 Mrad. Detectors in the charged particle tracking system--a pair of cylindrical multi-wire proportional chambers and a thin plastic scintillation barrel-shaped hodoscope array--were irradiated during the same running period with an average dose of ~40 krad. Individual CsI(undoped crystal) calorimeter detectors received an average dose of ~120 rad, mainly from photons, positrons and protons originating from $π^+$ hadronic interactions as well as from $π^+$ and $μ^+$ weak decays at rest in the active target.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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