Tanke, E.P.

Paper	Title	Page
TUP63	The First Results of Bunch Shape Measurements in SNS Linac	408
	A. Feschenko, A. Gaidash, Yu. Kisselev, L.V. Kravchuk, A. Liyu, A. Menshov, A.N. Mirzojan RAS/INR, Moscow S. Assadi, W. Blokland, S. Henderson, E.P. Tanke ORNL/SNS, Oak Ridge, Tennessee D.-O. Jeon ORNL, Oak Ridge
	Three Bunch Shape Monitors with transverse scanning of low energy secondary electrons for the SNS Linac have been developed and fabricated. The peculiarity of the detectors is using of energy separation of the electrons. The separation enables to minimize influence of detached electrons originated from dissociation of H-minus ions in the detector wire target. The first detector was used at the exit of the first DTL tank during its commissioning. The results of Bunch Shape measurements are presented and discussed. These results were used to verify beam quality, to set parameters of the accelerating field, to estimate a longitudinal beam halo and to restore a longitudinal beam emittance.
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