POST-HEARING QUESTIONS AND ANSWERS

FOR THE

APRIL 24, 1990, HEARING

BEFORE THE

SUBCOMMITTEE ON ENERGY RESEARCH AND DEVELOPMENT

COMMITTEE ON ENERGY AND NATURAL RESOURCES

UNITED STATES SENATE

WITNESS: JAMES F. DECKER

ACTING DIRECTOR OF ENERGY RESEARCH

QUESTIONS FROM SENATOR FORD

Magnets

Question 1: When will the magnet design for the SSC be complete?

Answer:

The design for the four-centimeter bore magnet has been completed
and the contractor is now designing the five-centimeter bore
magnet which was recently approved. The design will be an
iterative process leading to a production magnet design in about
3 years. The design will go through prototype, pre-production
and production phases, with the prototype design phase nearly
complete. The process which will lead to this design is as
follows: a competition will soon begin for an engineering
development contractor for the collider dipole magnets. Vendor
selection is expected late in FY 1990. Approximately 6 months
after contract award, the SSC Laboratory will conduct a system
design review which will determine the level of understanding of
the requirements by the vendor. Approximately 20 months after
contract award there will be a preliminary design review. The
critical design review of the production magnet design will occur
approximately 3 years after contract award.

Question:

Answer:

What is the present status of the work?

An inter-laboratory task force was formed early in 1990 to provide recommendations on design choices for the 5 centimeter collider dipole magnet. These recommendations are being

incorporated by those performing the conceptual design work at the SSC Laboratory, Fermilab and Brookhaven.

Collider quadrupole design work is being done at Lawrence

Berkeley Laboratory.

design will begin soon.

First tests of 1-meter models of the latest

Design work on the High Energy Booster (HEB) magnets is just

getting underway.

Question:

Answer:

Who is doing the design work?

The design work is being managed by the SSC Laboratory and is being performed at the SSC Laboratory, Fermilab, Brookhaven and Lawrence Berkeley Laboratory. The SSC Laboratory has lead responsibility for the High Energy Booster dipoles. Lawrence Berkeley Laboratory has lead responsibility for quadrupoles. Fermilab has lead responsibility for collider dipole cryostats. Brookhaven has lead responsibility for collider dipole cold

masses.

Question:

Answer:

Who is reviewing the work?

The SSC Laboratory has prime responsibility for ensuring that the
work is completed properly. The Department will conduct
technical reviews of the conceptual designs of each of the four
key types of superconducting magnets before allowing the SSC
Laboratory to issue industrial contracts. Consultants to the
Department will assist in these reviews by providing additional
technical and business expertise.