用于Super-Kamiokande探测器的高速电荷-时间转换器ASIC
High-speed charge-to-time converter ASIC for the Super-Kamiokande detector
摘要：
一种新的专用集成电路（ASIC），高速电荷-时间转换器（QTC）的岩通CLC 101，提供了三个通道，每个通道由前置放大器，前置放大器，低通滤波器和电荷积分电路，优化的光电倍增管（PMT）的波形。该ASIC使用单独的内置鉴别器检测PMT信号，并驱动输出定时信号，该定时信号的宽度表示PMT信号的积分电荷。与由无源元件组成的外部输入电路相结合，QTC为探测器的PMT提供全模拟信号处理，为时间数字转换器（TDC）的进一步处理做好准备。通过短时间电荷转换和基线恢复电路实现了高速（> 1 MHz）信号处理。通过提供三个增益范围，同时保持较短的周期时间，可实现宽范围电荷测量。QTC芯片测试结果表明，QTC芯片具有良好的模拟性能，对单个光电子信号的检测效率高，动态范围为4个数量级（0：3 mV ~ 3V; 0：2 ~ 2500 pC），电荷线性度为1%，电荷分辨率为0.2 pC，时序分辨率为0.1 ns。环境温度依赖性、通道隔离和速率依赖性的测试结果也符合规格。
英文摘要：
A new application-specific integrated circuit (ASIC), the high-speed charge-to-time converter (QTC) IWATSU CLC101, provides three channels, each consisting of preamplifier, discriminator, low-pass filter, and charge integration circuitry, optimized for the waveform of a photomultiplier tube (PMT). This ASIC detects PMT signals using individual built-in discriminators and drives output timing signals whose width represents the integrated charge of the PMT signal. Combined with external input circuits composed of passive elements, the QTC provides full analog signal processing for the detector's PMTs, ready for further processing by time-to-digital converters (TDCs). High-rate (>1MHz) signal processing is achieved by short-charge-conversion-time and baseline-restoration circuits. Wide-range charge measurements are enabled by offering three gain ranges while maintaining a short cycle time. QTC chip test results show good analog performance, with efficient detection for a single photoelectron signal, four orders of magnitude dynamic range (0:3mV ~ 3V; 0:2 ~ 2500 pC), 1% charge linearity, 0.2 pC charge resolution, and 0.1 ns timing resolution. Test results on ambient temperature dependence, channel isolation, and rate dependence also meet specifications.
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。
