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I'm happy to report to you, Mr. Chairman, that we met this challenge and in the second half of 1985 we hired professional people at the rate of four to five per month.

The viewgraph shows you where the staff originates. We are roughly one-third from national laboratories, one-third from universities, and one-third from industry, a few people from State and Federal Government.

The original project was conceived by Jim McCarthy in 1979 and his group at the University of Virginia. Last year, we decided, enough time having elapsed since the project was conceived, that we needed to reassure ourselves the latest technologies were employed to meet the scope.

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By introducing superconducting RF cavities instead of copper cavities as the elements of acceleration, we were able to improve the beam characteristics and save on future power bills. Of all the great advice and support we received from all over the world, I wish to acknowledge especially the University of Cornell's Newman Laboratory and the leadership of Carl Berkelman. The staff of Cornell was instrumental in transferring the technology they developed to CEBAF and industry.

We identified, not surprisingly, the cavities as a critical R&D item and worked together with industry to develop prototypes. So far, we have contracted with four vendors a total of seven cavities to date. As of today, we have received on schedule two cavities from two vendors, both tested.

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One cavity was tested at the vendor; the other cavity was tested at Cornell's Newman Laboratory.

The two characteristic quantities you will recognize on the viewgraph are the gradient in megavolts per meter and the quality factor, just a number.

The CEBAF design specifications call for 5 megavolts per meter and a quality factor of 3 times 10 to the 9. Both cavities have exceeded the specification appreciably, anywhere from 20 to 100 percent. Needless to say, we are extremely pleased with the results so far.

[Slide shown.]

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I would like to give you a brief appreciation of the concept of what we call a recirculated linear accelerator. The challenge here is to minimize cost and to maximize usefulness of the machine.

Picture A shows you a classical Linac with its sections. This Linac for 4 GeV at a continuous beam is unaffordable; it's too expensive.

Allow me now, just for an experiment, to insert between the Linac section a beam line, and now allow me to wrap up the Linac in such a fashion that the red Linac sections and the blue Linac sections are on top of each other, and now to fuse the red and the blue Linac sections into one each. That, Mr. Chairman and members of the committee, is CEBAF.

[The prepared statement of Dr. Grunder follows:]

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