Separated Function Drift Tube Linac (SFDTL)

SDFTL modules are planned to be developed above 20MeV. A prototype SFDTL module (704MHz) in copper for high duty cycle is fabricated by EB welding and vacuum brazing.

Fig-6 SDFTL prototype in copper(704 MHz)

Drift tubes fabrication with efficient cooling provision is also being developed with various fabrication techniques like vacuum brazing, EB welding and laser welding.

Fig - 7 A Typical Medium Power Drift Tube (SFDTL)

The other subsystems which are under development for SFDTL are

(1) Various types of drift tube alignment / mounting system: fig-8 shows girder type of drift tube alignment system under development.

Fig 8 Girder type drifts tube alignment system

(2) Remotely operated motorized alignments system for accelerator components

• Cam roller motorized alignment system is developed. It has five degrees of freedom. A menu operated control/ drive unit for 5 axes movement is also under development.

Fig-9 Cam roller based Motorized alignment system

(3) Piston tuner development (with cooling arrangement): For tuning of SFDTL cavity motorized piston/plunger tuner is also under development.(Fig-11)

Fig-11 Motorised Piston Tuner design with Cooling arrangement