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18-22 May 2015
1200 Molecular Plant Science Building, Michigan State University
EST5EDT timezone
Registration and Abstract Submission Now Open!

LCLS Magnet Power Supply Upgrade

May 19, 2015, 2:30 PM
15m
1200 Molecular Plant Science Building, Michigan State University

1200 Molecular Plant Science Building, Michigan State University

15 minute contribution Low-level Controls

Speaker

Ms Kristi Luchini (SLAC National Accelerator Laboratory)

Description

The Linac Coherent Light Source is a free electron laser (FEL) facility operating at the SLAC National Accelerator Laboratory (SLAC). The controls for low current powered magnets use a multi-channel power supply controller system (MCOR) to meet the requirements for LCLS. It has a modular architecture that consists of a rack mounted crate, with 16 removable power modules and 1 crate controller. A bulk power supply provides the main DC power for one or more crates. The I/O signals are read by the control system from VME, with an MVME 6100 Power PC CPU, 16-bit, 16-channel ADC and DAC IPAC modules, and a PMC-Event Receiver (EVR) to provide timing for fast feedback over a dedicated network. The MCOR system provides long term stability of 1000ppm over diurnal range of +/-15 degrees C, and can operate up to 120Hz, to meet fast feedback requirements. The upgrade to this system is a SLAC designed slot-0 controller with 2 Gigabit Ethernet ports, USB and serial port, 4 8-channel ADC, 4 8-channel DAC, Digital input and output channels, removable COMx CPU, Xilinx FPGA, timing supporting multi-mode or single mode, and interrupts. A prototype installation has been operating in LCLS Linac for 6 months and will be used for LCLS-II. This paper presents the controls upgrade motivation and commissioning results.

Summary

This talk will presents the magnet controls upgrade motivation and commissioning results.

Primary author

Ms Kristi Luchini (SLAC National Accelerator Laboratory)

Presentation Materials