Keyword: insertion
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MOPLM23 Senis Hall Probe Speed Dependence Issues undulator, wiggler, insertion-device, coupling 155
 
  • I. Vasserman
    ANL, Lemont, Illinois, USA
 
  An extensive test of a Senis 2-axis Hall probe was done at the Advanced Photon Source. Strong dependence of the measurement data on the speed of the sensor is observed. Discussion of the possible reason of such dependence is provided.
Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-MOPLM23  
About • paper received ※ 21 August 2019       paper accepted ※ 31 August 2019       issue date ※ 08 October 2019  
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TUPLS04 Re-Evaluation of the NSLS-II Active Interlock Window insertion-device, wiggler, undulator, vacuum 456
 
  • R.P. Fliller, III, C. Hetzel, Y. Hidaka, T. Tanabe
    BNL, Upton, New York, USA
 
  Funding: This manuscript has been authored by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy
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.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-TUPLS04  
About • paper received ※ 27 August 2019       paper accepted ※ 16 November 2020       issue date ※ 08 October 2019  
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TUPLS09 Precision Insertion Device Control and Simultaneous Monochromator Fly Scanning for NSLS-II controls, insertion-device, photon, feedback 471
 
  • D.A. Hidas, P.L. Cappadoro, T.M. Corwin, J. Escallier, A. Hunt, M. Musardo, J. Rank, C. Rhein, J. Sinsheimer, T. Tanabe, I. Waluyo
    BNL, Upton, New York, USA
 
  Funding: Department of Energy Office of Science DE-SC0012704
Beginning in January of 2019, 8 of the 10 In-Vacuum Undulators installed in the NSLS-II storage ring underwent in-house in-situ control system upgrades allowing for control of the magnetic gap during motion down to the 50 nanometer level with an in-position accuracy of nearly 5 nanometers. Direct linking of Insertion Devices and beamline monochromators is achieved via a fiber interface allowing precise, simultaneous, nonlinear motion of both devices and providing a fast hardware trigger for real-time accurate insertion device and monochromator fly scanning. This presentation will detail the accuracy of motion and its effect on the produced spectra as well as the variation of flux when both insertion device and monochromator are in simultaneous motion.
 
poster icon Poster TUPLS09 [0.668 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-TUPLS09  
About • paper received ※ 28 August 2019       paper accepted ※ 01 September 2019       issue date ※ 08 October 2019  
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