Superconducting Quadrupoles for the SLC Final Focus Page: 3 of 3

                                
8000
4000
2000
0
6000
2 4000
, 2000j
0

,,e

L

-100    -75   -50    -25
DISTANCE FROM IP  (f1)

0

Fig. L. Horizontal and vertical beta functions in the final
telescope. The solid lines indicate the superconducting confign-
ration; the dashed lines indicate the conventional configuration.
The positions of the qnadrpoles are shown along the bottom of
the figure.

Table 1
Parameters for the two final focus configurations at 50 GeV
Initial      Upgraded
Quadrupoles      Conventional Superconducting
Clear Aperture       3.95           4.13        cnn
Gradient             4.85           12.0      kG/cm
Drift Length (C)     9.25           7.25        ft.
Demagnifieation       x4            x5
0"                   0.75           0.50        cm
First Order Focus     1.5           1.2         pm
Spot Size (ar)       2.07           1.65        pMs

REFERENCES
1. J.J. Murray, K.L. Brown, T. Flaguth, The Completed De-
sign of the SLC Final Focus System, SLAC-PUB-4219,
February 1987, submitted to this conference.
2. F. Duas and K.L. Brown, Poeste Adurstages of Us-
ing Superwudeling Quadrupolee far the Fird Fen Quad-
rupoles in Ike SLtc Final Focus Syptese, SLAC CN-204,
Novemb r, 1082
3 J. Spencer, Some Optics Alternotisee for the FF, SLAC
CN-24, February 1984.
4. R.A. Lundy, B.C. Brown, J.A.Carson, H.E. Fisk, RH.
Hanft, P.M. Mantsch, A.D. Mebnturff, R.H. Resbottom,
and R. Erickson, High Gradient Superconducting Quadrn-
poles, IEEE Trans. on Nucl. Se., Vol. WS-32, No. 5,
1985, pp. 8707-3709.
L SEC Design Nandbook, December 1984.

DISCLAIMER
This report was prepared as an account of work sponsored by an agency of the United States
Government. Neither the United States Government nor any agency thereof, nor any of their
employees, makes any warranty, express or implied, or assumes any legal liability or responsi-
bility for the accuraCy, completeness, or usefulness or any information, apparatus. product, or
process disclosed, or represents that its use would not infringe privately owned rights. Refer.
cae herein to any specific commercial product. praum. or service by trade name, trademark,
manufacturer, or Otherwise dem not necessarily constitute or imply its endorsement, recm-
anendaioo. or favoring by the United States Government cr any agency them. The views
and opinions of auihars expressed hereni do not oc:essarily state or reflex those of the
United States Government or any agency thereof.

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