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. Author manuscript; available in PMC: 2021 Feb 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2020 Feb 1;106(2):440–448. doi: 10.1016/j.ijrobp.2019.10.049

Fig. 2.

Fig. 2.

Parameters and dose rate verification of FLASH proton radiation therapy set up. (A) Comparison of dose rate measured by Markus Chamber and Proton current measured by Faraday cup versus proton range at target isocenter. (B) Normalized ratio of Faraday cup to Marcus Chamber (MC) readings for proton currents up to 300 nA at a range of 32 g/cm2 which was used for animal irradiations. MC saturation curve (inset). (C) Dose rate measured using an MC. (D) The secondary ionization chamber MU versus proton beam current for a fixed pulse width of 100 ms.