THE EFFECT OF PARTICULATE DEBRIS ON THE INSULATION INTEGRITY OF SSC COILS 
DURING MOLDING AND COLLARING, E. Nehrlich(2), F. Markley(1), and D. Rogers
(1).*  In order to simulate the effect of accidently introduced debris on 
SSC coil insulation integrity, two pieces of insulated SSC cable have been
loaded in a hydraulic press after introducing foreign particles between
the layers.  The tests were originally suggested by R. Palmer of the SSC
Laboratory.  A high voltage (2KV) was continually applied between the two
cables and the load gradually increased until an electrical short occurred.
The high voltage was used as an easy method of detecting insulation punctures
and to continue the general type of testing begun at Brookhaven by J. Skaritka
now at the SSC Laboratory, and  continued at Fermilab by F. Markley and 
presented at last year's session of the Conference.  A range of particles
of different size, shape, and hardness were used, and both conducting and
insulating particles were included.  Fine wires were also used.

When the data are normalized using the control (no particles added), data
for each cable batch used, there is a correlation between pressure at
breakdown and particle size for cables insulated with Kapton only.  Adjustment
must be made for soft particles that tend to deform and for particles with
aspect ratios greater than one.  Additional measurements are planned where
the epoxy-fiberglass layer will be added to the Kapton insulation overwrap.

*(1)  Fermi National Accelerator Laboratory, Batavia, IL., 60510,
   (2) Fermilab Summer Student.

1.	Category 11 or 9
2.	F. Markley, Fermi National Accelerator Laboratory
	P.O. Box 500, M.S. 333, Batavia, Illinois 60510;
	(708) 840-3161.
3.	E. Nehrlich, F. Markley, D. Rogers
4.	Poster session.