BESIII电磁量能器三量程电荷测量方案

摘要

Describes a method of achieving system 15 bit dynamic range with three 10bit FADCs, which has been used in the design of BESⅢ EMC charge measurement. The method can save a great deal of EMC system costs and meet the system measuring accuracy requirement.%介绍了BESⅢ电磁量能器读出电子学设计中采用的用3个10bit精度FADC实现系统15bit动态范围需求的电荷测量方案.该方案在满足系统测量精度要求的前提下大大节省了系统造价.