强光一号加速器测量电缆补偿技术

 为满足快信号测试要求，提出了利用滤波器原理设计补偿器来提高传输线带宽，以减小信号在传输过程中的畸变和损失。针对强光一号加速器测试电缆特性，设计制作了小型化的带宽补偿器。通过采用该电缆补偿技术，强光一号加速器测量电缆补偿后的传输带宽达到200 MHz，幅度为原始信号的1/3，满足了强光一号加速器测试电缆快信号传输的要求。给出了原始信号、未补偿信号及补偿后信号的比较结果，证明补偿后的信号明显比未补偿信号更接近原始信号，原始信号经电缆传输后造成的前沿损失和波形畸变通过带宽补偿器后获到了明显的补偿和修复。编制了专用补偿器设计软件，使补偿器初期设计中的极零对寻找、元器件参数计算等工作实现自动化。

Bandwidth compensation technology of QG-I accelerator's cables

Transmission lines are widely used in the fast signal transmission at short distances due to its low cost. But its bandwidth should be compensated for its narrowband. A compensation method based on filter is provided and the compensators of small size are designed and used in QG-Ⅰ accelerator. Experimental results show that the transmission bandwidth could reach 200 MHz and the amplitude of signal could be 1/3 of the original one after compensation. The comparison of original, uncompensated and compensated signals shows that signals’ aberrations can be well compensated with this method, which meets the demand of the high speed signal transmission in the QG-I accelerator. A software for compensator design has been developed for the automation of Pole-Zeros finding and element parameter