2015/12/31 by LI Hua-Peng, Kun Tang, Hua-Peng, LI +11
Engineering · Physics and Astronomy · #Advanced X-ray Imaging Techniques #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Nuclear Experiment (nucl-ex) #Particle Accelerators and Free-Electron Lasers #X-ray Spectroscopy and Fluorescence Analysis
paper · pdf · doi:10.48550/arxiv.1512.09197
openalex publication_date 2015/12/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Synchrotron radiation with the characteristic of high brilliance, high level of polarization, high collimation, low emittance and wide tunability in energy has been used as a standard source in metrology(1, 2). For a decade, lots of calibration work have been done on 4B7A in Beijing Synchrotron Radiation Facility (BSRF) (3, 4). For the calibration process, a high-precision online monitor is indispensable. To control the uncertainty under 0.1%, we studied different sizes parallel ion chambers with rare-gas and used different collecting methods to monitor the x-ray intensity of the beamline. Two methods to collect the signal of the ion chambers: reading the current directly with electrometer or signal amplification to collect the counts were compared.