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DOE OSTI · 2525828

The B1APF Large Aperture Interaction Region Dipole

Kumar, Mithlesh [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:000000025360214X)·Schmalzle, Jesse [Brookhaven National Laboratory (BNL), Upton, NY (United States)]·Gupta, Ramesh [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:0000000294507341)·Joshi, Piyush [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:0000000230877159)·Anerella, Mike [Brookhaven National Laboratory (BNL), Upton, NY (United States)]·Witte, Holger [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:000000029903079X)
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Abstract

Brookhaven National Laboratory is hosting the Electron Ion Collider (EIC). B1APF dipole is the last magnet near the interaction point #6. The longitudinal geometrical space available for this magnet is 1.5 m. The diameter of the coil mandrel is 370 mm. The 3-dimensional coil ends design is particularly challenging because of this large aspect ratio. The coil operating current and operating temperature are 12600 A and 1.9 K respectively. It produces an integrated dipole field of 4.05 Tm. The coil is wound with a NbTi Rutherford cable which is 15.1 mm wide and 1.8 mm thick. The parameters for the 3D end design optimization are obtained after a series of winding tests on a real mandrel with the given cable. In conclusion, this study discusses the latest design based on 1) sensitivity studies on variations in wedge thicknesses and variations in B-H data, and 2) experimental data from the winding trials, analysis and its implementation in the 3D design of this magnet.

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BibTeXRIS

Kumar, Mithlesh [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:000000025360214X), Schmalzle, Jesse [Brookhaven National Laboratory (BNL), Upton, NY (United States)], Gupta, Ramesh [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:0000000294507341), Joshi, Piyush [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:0000000230877159), Anerella, Mike [Brookhaven National Laboratory (BNL), Upton, NY (United States)], Witte, Holger [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:000000029903079X). 2025-01-06. The B1APF Large Aperture Interaction Region Dipole. https://doi.org/10.1109/tasc.2025.3526075

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