Study of 1 MW neutron source synchrotron dual frequency power circuit for the main ring magnets
This paper describes the proposed design of the resonant power circuits for the 1-MW neutron source synchrotron`s main ring magnets. The synchrotron is to have a duty cycle of 30 Hz with a maximum upper limit of operation corresponding to 2.0 GeV and a maximum design value of 2.2 GeV. A stability of 30 ppM is the design goal for the main bending and focusing magnets (dipoles and quadruples), in order to achieve an overall stabffity of 100 ppm when random field and position errors of the magnets are included. The power circuits of this design are similar to those used in Argonne`s Intense Pulsed Neutron Source (IPNS) where the energy losses during each cycle are supplied by continuous excitation from modulated multiphase DC power supplies. Since only 50% of the 30-Hz sinewave is used for acceleration, a dual-frequency resonant magnet circuit is used in this design. The 30-Hz repetition rate is maintained with a 20-Hz magnet guide field during acceleration and a 60-Hz reset field when no beam is present. This lengthens the guide-field rise time and shortens the fall time, improving the duty factor for acceleration. The maximum B dot is reduced by 33% during acceleration and hence, the maximum rf voltage/turn is reduced by 56%.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10177178
- Report Number(s):
- ANL/ASD/CP-79828; CONF-9305177-9; ON: DE93017736
- Resource Relation:
- Conference: 12. International collaboration of advanced neutron sources meeting (ICANS),Abingdon (United Kingdom),24-28 May 1993; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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