Research output: Contribution to journal › Article › peer-review
Short-Period Superconducting Undulator Coils with Neutral Poles : Test Results. / Bragin, Alexey; Khruschev, Sergey; Lev, Vladimir et al.
In: IEEE Transactions on Applied Superconductivity, Vol. 28, No. 4, 4101904, 01.06.2018.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Short-Period Superconducting Undulator Coils with Neutral Poles
T2 - Test Results
AU - Bragin, Alexey
AU - Khruschev, Sergey
AU - Lev, Vladimir
AU - Mezentsev, Nikolay
AU - Shkaruba, Vitaliy
AU - Syrovatin, Vasily
AU - Tarasenko, Olga
AU - Tsukanov, Valeriy
AU - Volkov, Askold
AU - Zorin, Artem
PY - 2018/6/1
Y1 - 2018/6/1
N2 - The success in creating new bright magnetic structures of synchrotron radiation (SR) sources allows generation of subnanometric-emittance electron beams. This has motivated many SR centers to upgrade the old structures to increase the brightness of the SR sources. Smaller emittance imposes higher requirements on the generators of undulator radiation. With the advent of new materials, the production of undulators on permanent magnets has progressed greatly. Superconducting undulators are less common, but as sources of undulator radiation they are much more promising than undulators with permanent magnets. This paper presents test results of a prototype superconducting undulator magnet using active and neutral poles with a period of 15.6 mm and an operational field of ∼1.2 T. A pole gap of 8 mm provides a vertical aperture of 6 mm for an electron beam. In contrast to the traditional type of undulator with vertical racetrack coils, in this type of undulator the coils are of the horizontal racetrack type. The magnet design consists of the aluminum-alloy frame, into which individual poles are inserted. The design can significantly improve the manufacturing accuracy and, ultimately, reduce the phase errors. The coils are made of NbTi/Cu superconducting wires, which will be indirectly cooled by cryocoolers in own cryostat to the temperature of liquid helium.
AB - The success in creating new bright magnetic structures of synchrotron radiation (SR) sources allows generation of subnanometric-emittance electron beams. This has motivated many SR centers to upgrade the old structures to increase the brightness of the SR sources. Smaller emittance imposes higher requirements on the generators of undulator radiation. With the advent of new materials, the production of undulators on permanent magnets has progressed greatly. Superconducting undulators are less common, but as sources of undulator radiation they are much more promising than undulators with permanent magnets. This paper presents test results of a prototype superconducting undulator magnet using active and neutral poles with a period of 15.6 mm and an operational field of ∼1.2 T. A pole gap of 8 mm provides a vertical aperture of 6 mm for an electron beam. In contrast to the traditional type of undulator with vertical racetrack coils, in this type of undulator the coils are of the horizontal racetrack type. The magnet design consists of the aluminum-alloy frame, into which individual poles are inserted. The design can significantly improve the manufacturing accuracy and, ultimately, reduce the phase errors. The coils are made of NbTi/Cu superconducting wires, which will be indirectly cooled by cryocoolers in own cryostat to the temperature of liquid helium.
KW - Magnetics
KW - superconducting magnets
KW - superconductivity
KW - undulators
UR - http://www.scopus.com/inward/record.url?scp=85041821243&partnerID=8YFLogxK
U2 - 10.1109/TASC.2018.2805162
DO - 10.1109/TASC.2018.2805162
M3 - Article
AN - SCOPUS:85041821243
VL - 28
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 4
M1 - 4101904
ER -
ID: 13846540