有效节省电子学的MICROMEGAS位置编码读出研究

MICROMEGAS is a new microstructure gas detector with good performance. MICROMEGAS not only has wild application prospect in high energy physics,nuclear physics and nuclear astrophysics experiments, and also has application requirements in the industry, medicine field. The limitation of its application is the huge amount of read-out electronics. We provided a solution of position encoding read-out to reduce the read-out electronics. With an innovative grouped position encoding read-out technique, the simultaneously fired neighboring strips can be identified,and the percise position can be determined by the center-of-gravity of the induced charge distribution. First proposed the idea of the basic principles and implementation of two-dimensional position encoding read-out for MICROMEGAS. With position encoding read-out technology，the amount of read-out electronics is very easy to approach a reduction of 75% and 90% for one-dimensional and two-dimensional read-out respectively.

MICROMEGAS是一种性能优良的新型微结构气体探测器。MICROMEGAS不仅在核物理、粒子物理和核天体物理实验中有广泛的应用前景，而且在工业，医学领域也有应用需求。然而其问题是读出电子学路数庞大，因而限制了它的应用。本申请提出了减少读出电子学的方案，即位置编码读出。对一维条状读出，采用创新的位置分组编码方式，给出同时点火相邻多条的位置信息，并记录每条感应的电荷，实现电荷重心法来高精度定位；首次提出了二维pad读出位置编码的实现的原理和方法。采用位置编码读出，理论上可以使一维、二维读出电子学减少量分别达到75%和90%以上。

位置编码读出对于降低微结构气体探测器读出电子学路数具有重要的的意义。本课题围绕位置编码读出方法，编码实现方式，感应电荷分配比例展开研究。解决了一维、二维位置编码读出实现的关键问题。本项目已圆满完成了预期的研究目标，建立一套位置编码读出的有效解决方案，实现了有效节省电子学的目的。分别制作了用于一维、二维位置编码读出的原理样机。同时进行了基于LC延迟电路读出的相关的位置灵敏探测器研制，深入研究了探测器的位置响应性能。该探测器已在HIRFL-RIBLL2实验研究中得到了很好的应用。