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Magnets related to other projects at RRCAT
Design of Dipole magnet for IRFEL (30MeV electron Beam)
The Beam Physics & FEL Lab plans to go for new dipole magnets in the XI plan. These dipoles are for dog-leg type bends for the next IRFEL. A 3D design was carried out using the TOSCA-3D code. The required integrated field uniformity and integrated higher order multipoles have been achieved by introducing the end chamfer at both the ends of the magnet. For the construction of the magnet TATA-A grade low carbon steel is proposed. Table 1 gives the specifications of magnet. Figure 1 shows the simulated magnetic field pattern inside the magnet core.
Table 1: Major parameters of magnet
Total no. of Magnets |
03 |
Type |
H-Type, Parallel edge , air cooled coils |
Pole gap |
42 mm |
Bending angle |
22.5 degree |
Peak field |
0.2T @ 30 MeV |
Nominal field |
0.1657T @ 25.3 MeV |
Effective length |
200 mm |
Bending radius |
509.296 mm |
Overall length |
£ 290 mm |
Good field region |
±40 mm |
Each higher multipole |
< 6 x 10-4 |
Integrated higher multipole |
< 4 x 10-4 |
Figure 1: Magnet geometry modeled in TOSCA
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