Tsinghua University

Nuctech Company Limited

Shenjin Ming

Yuanjing Li

Kejun Kang

Junli Li

Qitian Miao

Ming Huang

Zhiqiang Chen

Ming Hu

Hui Zhang

Yaohong Liu

Haifeng Hu

Wanlong Wu

Chuanxiang Tang

Huayi Zhang

Qingjun Zhang

Jianmin Li

Yulan Li

Quanwei Song

Xuewu Wang

Yanli Deng

Weizhen Wang

Jingyu Gu

Guoping Zhu

Tao Xue

Weiqiang Guan

Yuxin Hu

Hui Gong

The disclosure provides a method for measuring X-ray energy of an accelerator in an inspection system. the method comprises: building a database comprising correspondence between half-value layer (HVL) and energy under a predetermined condition; measuring HVL for X-rays of the accelerator in the inspection system on line under the same predetermined condition; and comparing the measured HVL with the HVLs in the database comprising correspondence between HVL and energy to determine the X-ray energy of the accelerator. The method is applicable to a large-scale container/vehicle inspection system for measurement of X-ray energy/HVL of the accelerator so as to acquire source state of the inspection system in real time.

Method for measuring X-ray energy of an accelerator in an inspection system

The present application discloses a detector module, which is arranged on a detector arm, comprising one or a plurality of detector units arranged in a scattered configuration, wherein each of the detector units in the detector module is installed aiming at a beam center of a ray source, thus improving imaging quality and reducing the size of a detector frame drastically.

Detector in a scattered configuration applied to X/gamma ray container/vehicle inspection equipment

For quarantine treatment of a farming and forestry product for pest control, a method and a device may irradiate logs as a phytosanitary treatment with electron beams. The method may include: spreading the logs; aligning the spread logs to be flush at one end; conveying the spread and flush logs laterally; conveying the logs longitudinally through an irradiation field formed by accelerators to provide treatment of irradiation with the electron beams; throwing the irradiated logs out; and laterally conveying the logs away. The device may include a conveying device for conveying the logs, a shielding structure surrounding the conveying device, and accelerators provided in the conveying path of the conveying device. Two or more accelerators may be provided in centrosymmetry about the conveying path.

Method and device of irradiation of logs with electron beams as a phytosanitary treatment

A method for conducting irradiation of all logs of a whole vehicle with X-rays as a phytosanitary treatment may include: connecting a traction device and a goods carrying vehicle outside a shielding door; opening the door; the traction device pulling the vehicle into a tunnel; closing the shielding door; upon the vehicle reaching an irradiation region, accelerators generating X-rays; the traction device pulling the vehicle to pass through the irradiation region; stopping the X-rays; opening the door; the traction device pulling the vehicle away from the irradiation treatment tunnel; and disconnecting the traction device from the vehicle. A device may include a shielding structure, a tunnel formed therethrough; a rail along the tunnel; accelerators within the tunnel; and a traction device for pulling a vehicle carrying goods for quarantine treatment, the accelerators symmetrically arranged at both sides of and on the top of an irradiation region in the tunnel.

Method and device of irradiation of logs with x-ray as a phytosanitary treatment

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Beijing, China

Shenjin Ming