Status of M50 Modular Coils

• Winding form models based on m50_256.z01 have been posted in Pro/INTRALINK• Working on tee/clamps, wings, port openings, poloidal break, flanges• Propose slight modifications to WC using spline optimization, manual tweaks

M1, Type A, se141-011

M2, Type B,se141-012

M3, Type C,se141-013

CDR m50_256.z01

Concept for Shell Openings

• Use projection of coil path, plasma silhouette to maximize opening• Good for eddy current, bad for stress, integration with vessel ports

M1 (v=0)

M2

M3

<7-in to M1

Coil set #m50_256.z01Dots indicate dist from coil to coil-on-left is < 7-in

Proposed Winding Center Modification• Desire to increase spacing, minimize small “wiggles” through inboard trough region

4.35-in(was 4.0)

4.65-in(was 5.0)

m50.e01(blue)

coils.m50_256.z01(red)

Manual tweak case, e01• Case m50.e01 created by moving points on WS, global smoothing of control points• Max deviation from original is 1.9-cm, coil-coil min distance is 6.0-in (was 6.09-in)

M1(m50.e01)

m50_256.z01(red) m50.e02

(blue)

Manual tweak case, e02

• Case m50.e02 created by fixing M3, pushing M2, M1 on WS• Min coil-coil distance increased to 6.46-in between M2 and M3

m50.e01(red)

m50.e03(blue)

M1M2

M3

Manual tweak case, e03

• Case m50.e03 created by fixing M2, pushing M3, M1 on WS• Min coil-coil distance increased to 6.30-in between M3 and M3, 6.36-in for M2-M3

Spline optimization cases (D. Strickler)

• Using COILOPT to vary spline representation of coils over a region

M1

M2

M3

Case 022003c

m50_256.z01