SCDTL-3

STATUS —-> In operation since November 2015

SCDTL-3 accelerates SCDTL-2 beam from 18 MeV to 27 MeV

SCDTL-3 is composed of 7 tanks with 6 cells/tank. It receives the beam from SCDTL-2 and accelerates to 27MeV. Installation is foreseen by July 2015

Like the other structures, all mechanical manufacture has been done by CECOM srl, while brazing, welding, sealing and mounting are done by TSC srl. First RF checks are done by ENEA at CECOM site. All other tuning operations are done at TSC site by ENEA.

In the intertank space PMQs are placed. Two ion pumps keep the vacuum around 1 e-7 torr.

Oscilloscope pulses: Upper traces:Magenta:SCDTL-1 cavity field ;Green: SCDTL-2 cavity field ;Light blue: SCDTL-3 cavity field ;Yellow: 27 MeV accelerated current (Voltage across 50 Ohm, 20 uA/div); Lower traces: Light blue: SCDTL-3 output current

Green: SCDTL-3 + 3.3 mm Aluminum output current (Voltage across 50 Ohm, 20 uA/div)

Measurements on Microwave Bench: Electric field on axis and Dispersion curve