Studies of electron drift velocity and charge spectra in RPC by a UV laser source
Studies of electron drift velocity and charge spectra in RPC by a UV laser source
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DOI：
10.1016/j.nima.2008.12.132
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发表时间：
2009-05
影响因子：
1.4
通讯作者：
G. Chiodini;M. Coluccia;E. Gorini;F. Grancagnolo;M. Primavera;S. Stella
中科院分区：
文献类型：
--
作者：
G. Chiodini;M. Coluccia;E. Gorini;F. Grancagnolo;M. Primavera;S. Stella
本文报道了一个ATLAS型电阻板室（RPC）原型中电子漂移速度和气体放大特性。样机在94.7%C_2H_2F_4 + 5%C_4H_10 + 0.3%SF_6的饱和雪崩区工作。初级电离由聚焦良好的UV激光源以可再现的方式和变化的强度、活性气体体积内的光斑位置和气体放大引起。得到的漂移速度和气体放大的值进行了比较，由程序MAGBOLTZ计算的值。最后，脉冲高度谱已被记录和表征显示三个不同的电子雪崩制度。
We report on electron drift velocity and gas amplification properties in a ATLAS-like Resistive Plate Chamber (RPC) prototype. The prototype is operated in saturated avalanche regime with 94.7%C2H2F4+5%C4H10+0.3%SF6gas mixture. The primary ionization is induced by a well focused UV laser source in a reproducible manner and varying intensity, spot position inside the active gas volume and gas amplification. The obtained values of drift velocity and gas amplification have been compared to the values calculated by the program MAGBOLTZ. Finally, pulse height spectra have been recorded and characterized showing three well distinct electron avalanche regimes.