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Government of India | Department of Atomic Energy
Raja Ramanna Centre for Advanced Technology
Accelerator Magnet Technology Division


Magnets developed for Agriculture Radiation Processing Facility (ARPF):

A 10 MeV, 5 kW TW Electron Linac based ARPF is being set-up near DABH Vegetable and Fruit Market, Indore. AMTD has been involved in design and development of few sets of solenoids, dipole magnets, steering magnets, scanning magnets, FCTs for this Linac.

Fig. 58: Air cooled solenoids.
Fig. 58: Air cooled solenoids.


Parameters of air cooled solenoids.

Ampere Turns 8640 AT
Parameter Value
Magnetic field 500 Gauss
Operating current 40 A (Max.)
Size: ID x OD x L 132 x 316 x 175 mm
Coil conductor 10 x 4 mm copper strip
Power dissipation 0.12 kW


Fig. 59: Pair of air cooled solenoids mounted in the Linac assembly.
Fig. 59: Pair of air cooled solenoids mounted in the Linac assembly.


Parameters of water cooled solenoids for ARPF Linac.

amtd2_arpf_perm


Parameters of water cooled solenoids for ARPF Linac.

Fig. 60: A set of three water cooled solenoids installed in ARPF Linac (top) and their combined magnetic field profile (bottom).
Fig. 60: A set of three water cooled solenoids installed in ARPF Linac (top) and their combined magnetic field profile (bottom).


Fig. 61: Scanning magnet.
Fig. 61: Scanning magnet.


Fig. 62: Pulse selector magnet.
Fig. 62: Pulse selector magnet.


Fig. 63: Energy analyser bending magnet.
Fig. 63: Energy analyser bending magnet.


Fig. 64: Combined function steering magnets.
Fig. 64: Combined function steering magnets.


Fig. 65: 270-degree energy filtering magnet assembly with of 195 and 75-degree sector type dipole magnets.
Fig. 65: 270-degree energy filtering magnet assembly with of 195 and 75-degree sector type dipole magnets.


Fig. 66: Cross-section of both 195 and 75-degree dipole magnets.
Fig. 66: Cross-section of both 195 and 75-degree dipole magnets.
Magnet Bending radius Magnetic field at NI @ 2215 per pole
195 Degree magnet 200 mm 1751 G
75 Degree magnet


FCTs (Fast Current Transformers) for ARPF Linacs:

The non-destructive type FCTs have been developed for monitoring of continuous 10 μs pulse current of 300 mA at 300 Hz repetition rate in the 10 MeV electron Linacs of ARPF.

Fig. 66: Cross-section of both 195 and 75-degree dipole magnets.
Fig. 67: Assembly details of FCT developed for ARPF Linac.


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