具有高空间和时间分辨率的微通道板交叉条探测器。
Microchannel plate cross-strip detectors with high spatial and temporal resolution.
作者信息
Siegmund O, Tremsin A, Vallerga J, McPhate J
机构信息
Experimental Astrophysics Group, Space Sciences Laboratory, 7 Gauss Way, University of California, Berkeley, CA 94720, USA.
出版信息
Nucl Instrum Methods Phys Res A. 2009 Feb 10;610(1):118-122. doi: 10.1016/j.nima.2009.05.116.
The cross-strip imaging readout employs charge division, and centroiding, of microchannel plate charge signals detected on two orthogonal layers of sense strips to encode event X-Y positions and times. We have developed cross-strip detectors and fully parallel channel position encoding electronics. The front-end amplifiers utilize two 32-channel pre-amplifier ASICs that send signals to a full 64-channel 60 MHz ADC circuit followed by a FPGA event-processing board. Tests with a software Finite Impulse Response filter and centroiding algorithm demonstrate <10mm resolution with a 32mm cross-strip anode detector using low microchannel plate gain (∼10(6)). The self-triggered event timing accuracy is 750 ps, and the system is capable of encoding photons at >1 MHz in combination with firmware-based FPGA centroiding algorithms.
交叉条带成像读出采用电荷分割和质心算法，对在两个正交层的感应条上检测到的微通道板电荷信号进行处理，以编码事件的X-Y位置和时间。我们已经开发了交叉条带探测器和全并行通道位置编码电子设备。前端放大器使用两个32通道前置放大器ASIC，将信号发送到一个完整的64通道60 MHz ADC电路，然后连接到一个FPGA事件处理板。使用软件有限脉冲响应滤波器和质心算法进行的测试表明，对于一个32毫米交叉条带阳极探测器，在低微通道板增益（约10(6)）的情况下，分辨率小于10毫米。自触发事件定时精度为750皮秒，并且该系统结合基于固件的FPGA质心算法，能够以大于1 MHz的速率对光子进行编码。
Zotero 插件