The 30 MeV Proton Beam Emittance Measurement via a Designed and Constructed Wire Scanner and Using WinAGILE Beam Transport Code

A designed and constructed wire scanner is used to measure the 30 MeV Cyclotron proton beam profiles in both x- and y-directions prior to injection to another accelerator for Proton Therapy purposes. The position control and control of movement of the two orthogonal wire scanners are done through an interface board to the PC that communicates with both the photo-couple sensors and the designed driver board, mounted and connected to the step motor set up, respectively. The Win AGILE beam transport code is used to measure the beam profiles 407cm upstream from the wire scanner. The beam sigma’s are evaluated to be σx = 2.234 cm2 and σy = 1.850 cm2 . The beam emittance in both x- and y-directions obtained are ex = 1.67×10−5 m-rad and ey = 5.64×10−5 m-rad, respectively. The extract Twiss parameters are calculated as αx = −1.28, βx = 12.7, γx = 0.21, αy = −0.55, βy = 3.28, and γy = 0.10.Copyright © 2009 by ASME