Performance Study of the JadePix-3 Telescope from a Beam Test

We present the results of a beam test conducted on a telescope using the JadePix-3 pixel sensor, developed with TowerJazz 180 nm CMOS imaging technology. The telescope is composed of five planes, each equipped with a JadePix-3 sensor with pitches of 26 × 16 µm2 and 23.11×16 µm2. In addition, it features an FPGA-based synchronous readout system. The telescope underwent testing using an electron beam with energy ranging from 4 to 6GeV. At an electron energy of 5.4GeV, the telescope demonstrated superior spatial resolutions of 2.6 and 2.3µm in two dimensions. By designating the central plane as the device under test, we evaluated the JadePix-3 sensor’s spatial resolutions as 5.2 and 4.6µm in two dimensions, achieving a detection efficiency of over 99.0%.