Radioactive Ion Beam Line in Lanzhou (RIBLL) is the heavy ion radiation beam equipment on Heavy Ion Accelerator in Lanzhou, which can provide a variety of Radioactive Ion Beam （RIB）for physical experiments.In order ...Radioactive Ion Beam Line in Lanzhou (RIBLL) is the heavy ion radiation beam equipment on Heavy Ion Accelerator in Lanzhou, which can provide a variety of Radioactive Ion Beam （RIB）for physical experiments.In order to improve the efficiency and accuracy of the experiments, we need a high-performance Parallel Plate Avalanche Counter(PPAC) to monitor the RIB online and to measure the track of the incident particles and reaction products.展开更多
The heavy-ion therapy is one of the modalities to treat a patient with body tumors. In the tumor therapy, we wish to irradiate only the tumors in order to keep the normal tissues/organs undamaged. Along the range of h...The heavy-ion therapy is one of the modalities to treat a patient with body tumors. In the tumor therapy, we wish to irradiate only the tumors in order to keep the normal tissues/organs undamaged. Along the range of heavy ion passing through the matter, most of ion energy deposits at the end of the range, forming a so called Bragg peak[1]. In order to accurately determine the irradiation profiles and positions of scanned展开更多
ZTE Corporation has reported that the Patent Protection Association of China （PPAC） recently released patent application rankings for 2009 with ZTE, Huawei and Hongfujin claiming the top three spots on the ranking l...ZTE Corporation has reported that the Patent Protection Association of China （PPAC） recently released patent application rankings for 2009 with ZTE, Huawei and Hongfujin claiming the top three spots on the ranking list.展开更多
文摘Radioactive Ion Beam Line in Lanzhou (RIBLL) is the heavy ion radiation beam equipment on Heavy Ion Accelerator in Lanzhou, which can provide a variety of Radioactive Ion Beam （RIB）for physical experiments.In order to improve the efficiency and accuracy of the experiments, we need a high-performance Parallel Plate Avalanche Counter(PPAC) to monitor the RIB online and to measure the track of the incident particles and reaction products.
文摘为提升平行板雪崩计数器(PPAC)的使用性能,设计了一款具有50 ns和100 ns两档达峰时间的四通道滤波成形专用集成电路(ASIC)芯片。该ASIC芯片与已有的前放芯片结合可实现PPAC的信号读出。芯片内每个通道包括极零相消、低通滤波成形及输出电路。输入动态范围-0.8^+0.8 V内的线性度达到0.2%;-3 d B带宽噪声不高于60μV;芯片功耗30 m W;面积为2.6 mm×1.25 mm。
文摘The heavy-ion therapy is one of the modalities to treat a patient with body tumors. In the tumor therapy, we wish to irradiate only the tumors in order to keep the normal tissues/organs undamaged. Along the range of heavy ion passing through the matter, most of ion energy deposits at the end of the range, forming a so called Bragg peak[1]. In order to accurately determine the irradiation profiles and positions of scanned
文摘ZTE Corporation has reported that the Patent Protection Association of China （PPAC） recently released patent application rankings for 2009 with ZTE, Huawei and Hongfujin claiming the top three spots on the ranking list.
