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Title |
Page |
| MOPAN111 |
Modbus/TCP Controller for the Power Supplies in ALS BTS Beam Line
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425 |
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- S. Cohen
Bira, Albuquerque, New Mexico
- M. W. Sherman, W. D. Sherman
Alpha Scientific Electronics, Hayward, California
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The development, testing and commissioning of a self-contained power supply controller for four 100 KW power supplies for the upgraded Booster to Storage Ring (BTS) beam line at the Advanced Light Source at the Lawrence Berkeley Laboratory, is presented. The power supply controller, is a 3U high, rack-mount chassis, that contains the regulation control-loop amplifiers, 16-bit DAC with microcontroller and aμPLC( Programmable Logic Controller) for power-supply state-machine control. Local control is achieved via push-buttons and a color LCD touch screen. Remote control is mediated viaμPLC using embedded Modbus/TCP. Using a unique, data logging system, the operational parameters of the regulation loop can be safely monitored and recorded while the system is running at full power. The entire design is based on optimum reliability, safety and ease of troubleshooting and repair. A modular design for key control components, allows the power supply to operate in a nominal mode, even if one or two ancillary internal modules fail. This allows for continued beam operation until it is convenient to service the unit, keeping beam availability as high as possible.
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| MOPAN112 |
Digital Control Interface for Bipolar Corrector Power Supplies for LCLS
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428 |
| |
- S. Cohen, S. R. Babel
Bira, Albuquerque, New Mexico
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We detail the development, testing and commissioning of a single-board digital interface for modular bipolar corrector magnet power supplies to installed at the Linac Coherent Light Source (LCLS) at the Stanford Linear Accelerator (SLAC). The sixteen-channel VME-form-factor board replaces the passive the control-interface board in the MCOR (Magnet Corrector) Chassis. The board is a self-contained system with both serial and Ethernet connectivity intended for use with an EPICS accelerator control system IOC, however, the ASCII protocol allows generic computer control. The interface card contains 16 independent ADC and DAC channels, each with 16 bits of resolution. Additionally, the interlock, fault, reset and digital control lines are remotely controllable via either the serial or Ethernet connections. The design has been planned so that a mini-IOC can be included on board for direct Channel Access connectivity.
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