Cryogenic Field Measurement of Pr2Fe14B Undulator and Performance Enhancement Options at the NSLS-II
Conference
·
OSTI ID:981453
Short period (14.5mm) hybrid undulator arrays composed of Praseodymium Iron Boron (Pr{sub 2}Fe{sub 14}B) magnets (CR53, NEOMAX, Inc.) and vanadium permendur poles have been fabricated at Brookhaven National Laboratory. Unlike Neodymium Iron Boron (Nd{sub 2}Fe{sub 14}B) magnets which exhibit spin reorientation at temperatures below 150K, PrFeB arrays monotonically increase performance with lower operating temperature. It opens up the posibility for use in operating a cryo-permanent magnet undulator (CPMU) in the range of 40K to 60K where very efficient cryocoolers are available. Magnetic flux density profiles were measured at various temperature ranges from room temperature down to liquid helium (LHe) using the Vertical Testing Facility (VTF) at the National Snchrotron Light Source-II (NSLS-II). Temperature variations of phase error have been characterized. In addition, we examined the use of textured Dysprosium (Dy) poles to replace permendur poles to obtain further improvement in performance.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY (BNL)
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 981453
- Report Number(s):
- BNL--91263-2010-CP; 39KC02000
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cryogenic Field Measurement of Pr{sub 2}Fe{sub 14}B Undulator and Performance Enhancement Options at the NSLS-II
Insertion Devices for NSLS-II Baseline and Future
The possibility for a short-period hybrid staggered undulator.
Journal Article
·
Wed Jun 23 00:00:00 EDT 2010
· AIP Conference Proceedings
·
OSTI ID:21410237
Insertion Devices for NSLS-II Baseline and Future
Conference
·
Mon Jun 23 00:00:00 EDT 2008
·
OSTI ID:941616
The possibility for a short-period hybrid staggered undulator.
Conference
·
Fri Dec 31 23:00:00 EST 2004
·
OSTI ID:925246