Extended Data Fig. 5: Laser based rTPC calibration and comparison with Garfield++ simulation predictions.

a The green bars denote the measured drift times of laser-induced photoelectrons released from nine aluminium strips on the inner cathode surface of the rTPC (Methods). The green dashed line is the predicted drift time from the Garfield++ model used in the detector physics analysis. Each green bar denotes the range of drift times measured during the period of the physics measurement campaign, while the dash in each bar denotes the average drift time over those measurements. Vertical dashed lines indicate the axial midpoints of mirrors A and G. b The red circles denote measurements, at five z-locations, of the Lorentz displacement, i.e., the azimuthal displacement of the radially drifted photoelectrons at the location of the anode wires (r = 18.2 cm). The error bars are due to the fit error and are smaller than the plotting symbols except at the vertical position 0 cm. The two points for each z are measured at different initial azimuthal positions. The red dashed line denotes the prediction from the same Garfield++ simulation model. Note that vertical scales are magnified for both figures.