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{enquist:icalepcs2021-frbr04,
author = {H. Enquist and A. Bartalesi and B. Bertrand and J. Forsberg and Á. Freitas and V. Hardion and M. Lindberg and C. Takahashi},
% author = {H. Enquist and A. Bartalesi and B. Bertrand and J. Forsberg and Á. Freitas and V. Hardion and others},
% author = {H. Enquist and others},
title = {{Continuous Scans with Position Based Hardware Triggers}},
booktitle = {Proc. ICALEPCS'21},
pages = {1069--1073},
eid = {FRBR04},
language = {english},
keywords = {controls, detector, undulator, hardware, synchrotron},
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-FRBR04},
url = {https://jacow.org/icalepcs2021/papers/frbr04.pdf},
abstract = {{At beamline end-stations, data taking that relies on traditional step scanning, in which motors are repeatedly started and stopped, leads to inefficient usage of the x-ray source. This also increases the risk of sample radiation damage. We have developed a system where scans are performed while continuously moving the motors. To ensure stable repeatable measurements, the detector triggers are generated, in hardware, from the motor encoder positions. Before the scan starts, a list of positions is generated and as the scan progresses a trigger is produced as each successive position in the list is reached. The encoder signals from the motors are connected both to the IcePAP motion controller for closed loop operation, and a PandABox which is used as the trigger source. Control is from Tango and Sardana with a TriggerGate controller that calculates the motor positions and configures the PandABox. The scanned motor can be either a single motor, for example a sample positioner, or a combined motion like a monochromator. When combined motions are required, these make use of the parametric trajectory mode of the IcePAP. This enables continuous scans of coupled axes with non-linear paths.}},
}