The beam profile at the end of linac a) horizontal and b) vertical, measured using a wire scanner; and (c) the beam profile at the end of the transport section using a gated CCD (LCTV4). 

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Context 1

... AND MEASUREMENTS Table 1 summarizes the necessary TRANSPORT input beam phase-space parameters obtained by emittance mea- surements at the end of the linac and as calculated in the previous section. Updated measurements of drift spaces, magnet fields and diagnostics locations were also used. Figure 3 shows calculated beam envelopes using TRANS- PORT. The beam size at the pRad entrance is 2mm radius (2RMS). A few examples of beam profile measurements are shown in Fig. 4. Figure 5 shows measured beam pro- files at diagnostics locations (black dots in solid line) and the predicted envelope (hollow circles in dotted line) ...

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... AND MEASUREMENTS Table 1 summarizes the necessary TRANSPORT input beam phase-space parameters obtained by emittance mea- surements at the end of the linac and as calculated in the previous section. Updated measurements of drift spaces, magnet fields and diagnostics locations were also used. Figure 3 shows calculated beam envelopes using TRANS- PORT. The beam size at the pRad entrance is 2mm radius (2RMS). A few examples of beam profile measurements are shown in Fig. 4. Figure 5 shows measured beam pro- files at diagnostics locations (black dots in solid line) and the predicted envelope (hollow circles in dotted line) using This is a preprint -the final version is published with IOP 9th International Particle Accelerator Conference IPAC2018, Vancouver, BC, Canada JACoW Publishing ISBN: 978-3-95450-184-7 doi:10.18429/JACoW-IPAC2018-THPAK047 TRANSPORT. The top and bottom graphs represent horizon- tal and vertical profiles along the pRad beamline. Variations of up to 30% were observed between simulation and mea- surements. We used many legacy diagnostics and accurate resolution of each of the diagnostics were unknown. In ad- dition, there might be some analysis error due to low-level signal. Therefore, variation between measurements and pre- dictions at the beginning or at the end of the beamline stands for uncertainty of measurements. ...