JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{geraldes:icalepcs2021-tupv004,
author = {R.R. Geraldes and J.L. Brito Neto and E.P. Coelho and L.P. Do Carmo and A.Y. Horita and S.A.L. Luiz and M.A.L. Moraes},
% author = {R.R. Geraldes and J.L. Brito Neto and E.P. Coelho and L.P. Do Carmo and A.Y. Horita and S.A.L. Luiz and others},
% author = {R.R. Geraldes and others},
title = {{The FPGA-Based Control Architecture, EPICS Interface and Advanced Operational Modes of the High-Dynamic Double-Crystal Monochromator for Sirius/LNLS}},
booktitle = {Proc. ICALEPCS'21},
pages = {370--375},
eid = {TUPV004},
language = {english},
keywords = {controls, undulator, FPGA, EPICS, operation},
venue = {Shanghai, China},
series = {International Conference on Accelerator and Large Experimental Physics Control Systems},
number = {18},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {03},
year = {2022},
issn = {2226-0358},
isbn = {978-3-95450-221-9},
doi = {10.18429/JACoW-ICALEPCS2021-TUPV004},
url = {https://jacow.org/icalepcs2021/papers/tupv004.pdf},
abstract = {{The High-Dynamic Double-Crystal Monochromator (HD-DCM) has been developed since 2015 at Sirius/LNLS with an innovative high-bandwidth mechatronic architecture to reach the unprecedented target of 10 nrad RMS (1 Hz - 2.5 kHz) in crystals parallelism also during energy fly-scans. After the initial work in Speedgoat’s xPC rapid prototyping platform, for beamline operation the instrument controller was deployed to NI’s CompactRIO (cRIO), as a rugged platform combining FPGA and real-time capabilities. Customized libraries needed to be developed in LabVIEW and a heavily FPGA-based control architecture was required to finally reach a 20 kHz control loop rate. This work summarizes the final control architecture of the HD-DCM, highlighting the main hardware and software challenges; describes its integration with the EPICS control system and user interfaces; and discusses its integration with an undulator source.}},
}