Beam test of the RFQ linac ‘TALL’
1986
The RFQ linac ‘TALL’ is of four vane structure driven with a loop coupler. It is 58 cm in diameter and 730 cm in length. It is designed to accelerate heavy ions with charge to mass ratio of 1∼1/7. A field uniformity was obtained within an error of ±2% azimuthally and ±5% longitudinally by use of side inductive and end capacitive tuners. The TE210 mode was tuned at 101.3 MHz, 0.9 MHz lower than that of the closest mode TE111. Beam test was done by using proton beam. Transmission exceeding 90% was obtained. Energy and its spread of the output beam were measured by an analyzer magnet at T=825 keV and ΔT/T−1.6% in FWHM. They agree with calculated values.
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