The main purpose of Beijing Test Beam Facility (BTBF)  open access for beam tests of the new type of detectors, and also provides a means of testing the prototype detector in the initial stage. Another application of the BTBF is its mixing particle radiation field, the radiation field formed around the target when the electron beam bombard the target, it very like the cosmic rays irradiation environment, so it can be used for irradiation study of the materials, agriculture and genetic science. The BEPCII three-purpose reconstruction project is coming to an end. The Beijing test beam is a separate beam line from BEPCII and will be available for full year from April 2020. The BEPCII three-purpose reconstruction project is coming to an end. The Beijing test beam is a separate beam line from BEPCII and will be available for full year from April 2020. E2 line beam current parameters: 10ps, 1-2nC, 1.8-2.5GeV (concurrent mode), 1.1-2.5GeV (dedicated mode), 12.5-50Hz. E3 line single-particle beam line: can provide GeV single-energy electron, single-energy proton and single-energy Pi particles and their accompanying particles, frequency 1-4Hz, have potential for improvement. Beam time: When used with synchrotron mode, 170s/200s can be used. When used in collision mode, 15s/90s can be used.

    Welcome potential users to send letters and consultations, and jointly develop and utilize Beijing test bundles! Please write a letter to the specific demand parameter index, and the end of the beam can be properly modified by the user without changing the compatibility of the entire beam line.

    Test beam contact: Huang Yongsheng, wechat：13811814119, mailbox huangys82@ihep.ac.cn