| Title |
Encoder Interface for NSLS-II Beam Line Motion Scanning Applications |
| Authors |
- R.A. Kadyrov, J.H. De Long, K. Hapresenter, S. So, E. Stavitski
BNL, Upton, Long Island, New York, USA
|
| Abstract |
The variety of motion control applications on existing and future NSLS-II beam lines demand custom control electronics developed to meet specific needs and ease integration to existing systems. Thus an encoder interface was designed for a number of detection techniques that require fly-scan applications. This design fits in a 2U chassis and can handle up to 4 incremental quadrature encoders with a digital RS-422A interface and output frequencies up to 10 MHz. The logic, based on Xilinx Virtex-6 FPGA, processes signals from an encoder, associates it with accelerator timestamp and sends the data to a server using TCP/IP stack, with the server side running an EPICS IOC. Several filtering and compression techniques are also applied. The device then re-translates the interface signals for the motion controller, allowing the device to be installed between encoder and motion controller with no interference to the system. The hardware leverages the NSLS-II BPM Digital Front End (DFE) board with Virtex-6 FPGA and periphery. The design harmoniously complements the family of NSLS-II equipment sharing same mechanical and electrical platform.
|
| Paper |
download WEPGF080.PDF [0.528 MB / 4 pages] |
| Poster |
download WEPGF080_POSTER.PDF [4.674 MB] |
| Conference |
ICALEPCS2015, Melbourne, Australia |
| Series |
International Conference on Accelerator and Large Experimental Physics Control Systems (15th) |
| Proceedings |
Link to full ICALEPCS2015 Proccedings |
| Session |
Poster session |
| Date |
21-Oct-15 17:15–18:15 |
| Main Classification |
Hardware Technology |
| Keywords |
interface, controls, FPGA, status, hardware |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Lou Corvetti (AS, Clayton, Australia); Kathleen Riches (SLSA, Clayton, Australia); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-148-9 |
| Published |
December 2015 |
| Copyright |
|
