The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
@InProceedings{fliller,iii:napac2019-tupls04,
author = {R.P. Fliller, III and C. Hetzel and Y. Hidaka and T. Tanabe},
title = {{Re-Evaluation of the NSLS-II Active Interlock Window}},
booktitle = {Proc. NAPAC'19},
pages = {456--458},
paper = {TUPLS04},
language = {english},
keywords = {insertion, insertion-device, wiggler, undulator, vacuum},
venue = {Lansing, MI, USA},
series = {North American Particle Accelerator Conference},
number = {4},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2019},
issn = {2673-7000},
isbn = {978-3-95450-223-3},
doi = {10.18429/JACoW-NAPAC2019-TUPLS04},
url = {http://jacow.org/napac2019/papers/tupls04.pdf},
note = {https://doi.org/10.18429/JACoW-NAPAC2019-TUPLS04},
abstract = {The NSLS-II Active Interlock is the system which protects the NSLS-II Storage Ring vacuum chamber from damage due to synchrotron radiation. The Active Interlock measures the beam position and angle at all insertion devices and issues a beam dump if the beam is outside of the pre-defined window. The window is determined by thermal analysis of vacuum apertures and considers the effects of local magnets such as canting magnets, etc. Recently, it was realized that the insertion device correction coils where not considered in the initial evaluation of the envelope. The purpose of these coils is to correct for the orbit deviations caused by imperfections in the insertion devices that steer the beam. The usual effect is to negate any angle induced by the device, however, if the coil is not set properly the beam may have a larger angle than permitted by the Active Interlock even though the angle calculation does not show it. In this paper we discuss the effect of the insertion device coils on the electron beam and the steps taken to account for this effect in the Active Interlock.},
}