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Title: Latest experiences and future plans on NSLS-II insertion devices

Abstract

National Synchrotron Light Source-II (NSLS-II) is the latest storage ring of 3 GeV energy at the Brookhaven National Laboratory (BNL). The horizontal emittance of the electron beam with the currently installed six damping wigglers is 0.9 nm.rad, which could be further reduced to 0.5 nm.rad with more insertion devices (IDs). With only one RF cavity the beam current is restricted to 200 mA. Five hundred mA operation is envisaged for next year with an addition of the second cavity. Six (plus two branches) beamlines have been commissioned in the initial phase of the project. In July 2015, three NIH funded beamlines called “Advanced Beamlines for Biological Investigations with X-rays” (ABBIX) will be added for operation. This paper describes the experiences of ID development, installation, and commissioning for the NSLS-II project as well as our future plans to improve the performance of the facility in terms of source development.

Authors:
; ; ; ; ; ; ; ; ;  [1]
  1. Energy Sciences Directorate, Brookhaven National Laboratory, Upton, NY 11973, U.S.A (United States)
Publication Date:
OSTI Identifier:
22608300
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1741; Journal Issue: 1; Conference: SRI2015: 12. international conference on synchrotron radiation instrumentation, New York, NY (United States), 6-10 Jul 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM CURRENTS; BNL; COMMISSIONING; DAMPING; ELECTRON BEAMS; ELECTRONS; EQUIPMENT; GEV RANGE; INSTALLATION; NSLS; OPERATION; STORAGE RINGS; SYNCHROTRON RADIATION; VISIBLE RADIATION; X-RAY SOURCES

Citation Formats

Tanabe, T., Hidaka, Y., Kitegi, C., Hidas, D., Musardo, M., Harder, D. A., Rank, J., Cappadoro, P., Fernandes, H., and Corwin, T. Latest experiences and future plans on NSLS-II insertion devices. United States: N. p., 2016. Web. doi:10.1063/1.4952783.
Tanabe, T., Hidaka, Y., Kitegi, C., Hidas, D., Musardo, M., Harder, D. A., Rank, J., Cappadoro, P., Fernandes, H., & Corwin, T. Latest experiences and future plans on NSLS-II insertion devices. United States. doi:10.1063/1.4952783.
Tanabe, T., Hidaka, Y., Kitegi, C., Hidas, D., Musardo, M., Harder, D. A., Rank, J., Cappadoro, P., Fernandes, H., and Corwin, T. 2016. "Latest experiences and future plans on NSLS-II insertion devices". United States. doi:10.1063/1.4952783.
@article{osti_22608300,
title = {Latest experiences and future plans on NSLS-II insertion devices},
author = {Tanabe, T. and Hidaka, Y. and Kitegi, C. and Hidas, D. and Musardo, M. and Harder, D. A. and Rank, J. and Cappadoro, P. and Fernandes, H. and Corwin, T.},
abstractNote = {National Synchrotron Light Source-II (NSLS-II) is the latest storage ring of 3 GeV energy at the Brookhaven National Laboratory (BNL). The horizontal emittance of the electron beam with the currently installed six damping wigglers is 0.9 nm.rad, which could be further reduced to 0.5 nm.rad with more insertion devices (IDs). With only one RF cavity the beam current is restricted to 200 mA. Five hundred mA operation is envisaged for next year with an addition of the second cavity. Six (plus two branches) beamlines have been commissioned in the initial phase of the project. In July 2015, three NIH funded beamlines called “Advanced Beamlines for Biological Investigations with X-rays” (ABBIX) will be added for operation. This paper describes the experiences of ID development, installation, and commissioning for the NSLS-II project as well as our future plans to improve the performance of the facility in terms of source development.},
doi = {10.1063/1.4952783},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1741,
place = {United States},
year = 2016,
month = 7
}
  • Magnetic measurements on three insertion devices for use in the National Synchrotron Light Source (NSLS) x-ray ring are described. Hall probes were used for field mapping, and rotating long coils were used to determine integrated multipole coefficients. Results are presented for an iron pole-REC hybrid indulator, a vanadium permendur pole-REC hybrid wiggler, and a 5 T superconducting wiggler.
  • National Synchrotron Light Source-II (NSLS-II) project is now in the construction stage. A new insertion device (ID) magnetic measurement facility (MMF) is being set up at Brookhaven National Laboratory in order to satisfy the stringent requirement on the magnetic field measurement of IDs. ISO-Class7 temperature stabilized clean room is being constructed for this purpose. A state-of-the-art Hall probe bench and integrated field measurement system will be installed therein. IDs in the project baseline scope include six damping wigglers, two elliptically polarizing undulators (EPUs), three 3.0m long in-vacuum undulators (IVUs) and one 1.5m long IVU. Three-pole wigglers with peak field overmore » 1 Tesla will be utilized to accommodate the users of bending magnet radiation at the NSLS. Future plans includes: (1) an in-vacuum magnetic measurement system, (2) use of PrFeB magnet for improved cryo undulator, (3) development of advanced optimization program for sorting and shimming of IDs, (4) development of a closed loop He gas refrigerator, (5) switchable quasi-periodic EPU. Design features of the baseline devices, IDMMF and the future plans for NSLS-II ID activities are described.« less
  • National Synchrotron Light Source-II (NSLS-II) project is currently under construction. Procurement of various insertion devices (IDs) has begun. This ring assumes a very high beam stability requirement which imposes tighter field specifications on insertion devices (IDs) compared to the rings of previous generation. The state of the art ID Magnetic Measurement Facility is being set up in order to be able to certify the stringent requirements on the magnetic field of NSLS-II IDs. The IDs in the project baseline scope include six 3.5m long damping wigglers (DWs) with 100mm period length and 15mm pole gap, two 2.0m Elliptically Polarizing Undulatormore » (EPU) with 49mm period and 11.5mm minimum magnetic gap, two 3.0m long 20mm period and one 1.5m long 21mm period IVU, which the minimum gap of these is 5mm and 5.5mm, respectively. Recently a special device for inelastic X-ray scattering (IXS) beamline has been added to the collection of baseline devices. Three pole wigglers with a 28mm magnetic gap and a peak field over 1 Tesla will be utilized to accommodate the users of the type of radiation which is currently produced with bending magnets at the NSLS.« less