Fig. 2: Long-term stability of the prototype machine.
From: Preclinical tumor control with a laser-accelerated high-energy electron radiotherapy prototype
a Sampled electron beam spectra throughout April of the year 2023. The total number of electron beam pulses recorded is 2522, with 100−130 beam pulses sampled each day. b Averaged charge (blue) and mean energy (yellow) of the spectrum sampled each day, only the portion of the electron beams with energy higher than 40 MeV were measured. It is noted that, on the 9th and 13th day, element cleaning and optical alignment were conducted respectively to optimize accelerator performance. Data are presented as mean values ± SD. The daily technical replicates counts are provided in Supplementary Table 3 of the Supplementary Information. Source data are provided as a Source Data file.
