Case Studies in Superconducting Magnets: Design and by Yukikazu Iwasa

By Yukikazu Iwasa

Designed for graduate scholars in mechanical engineering, this textbook discusses the elemental thoughts of superconducting magnet expertise. very important themes lined contain box distribution, magnets, strength, thermal balance, dissipation, and safeguard. to aid the scholars excel within the box, each one bankruptcy includes educational difficulties, followed via ideas, using solenoidal magnets as examples.

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Example text

The two important solenoidal magnets for generation of high magnetic fields (Bitter and hybrid) are also described in the Problem Section. At the present time, field and force computations are generally performed with computer codes that, for a given magnet configuration, give accurate numerical solutions at any location. 1]. Analytical approaches derived in the Problem Section can give field values only at restricted locations, usually at the magnet center; however, they elucidate subtle relationships among fields, forces, and magnet parameters.

10) As required, J ƒ < J c . 3: Magnetic shielding with a spherical shell This problem deals with the essence of passive magnetic shielding, an important subject for MRI, maglev, and other systems where people and field-sensitive equipment might be exposed to a fringing field. S. 5mT). d. 2R and wall thickness d/R << 1 of highly permeable material (µ/µo >> 1) may be used, as shown in Fig. 4. 42) b) Show that in the limits of µ/µo >> 1 and d/R << 1, the ratio H ss /H 0 given by Eq. 43) c ) Next, obtain Eq.

Case 2: µ /µ o = 1 The problem reduces to the trivial case, equivalent to the absence of the sphere. Case 3: µ / µ o = ∞ This is a case when the sphere is of ferromagnetic material such as iron. The magnetic field is drawn into the sphere. With µ = ∞ inserted into Eqs. 10b) The important point to note is that the field within the ferromagnetic sphere is 3 times that of the external field. 1 and µ/µ o = 100 are sketched below. Fig. 2 Field distributions inside and near the sphere for two values of µ/µo .

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