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4X6" Rotary Bayonet LN2 Test Fill

This engineering note describes a test fill of the 4-inch x 6-inch rotary bayonet test fixture with LN{sub 2}. This test verifies the operation of valves on the fixture, and checks for proper construction/insulation. Further cold testing is imminent (with rotation and moment loading of the bayonet) after proper construction is verified and the test fixture is accepted. While this test fixture is a pressure vessel (4-inch), it does not require special safety treatment because it is under 6-inch … more

Date: August 2, 1988

Creator: Fitzpatrick, J.B.

Partner: UNT Libraries Government Documents Department

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Leakage Rates for Cryolab Valves

This note summarizes a brief study on the leakage rates of cryolab valves due to the failure of the valve packings. The {Delta}r gap between the shaft and the packing, the fluid (Ar or N2), the {Delta}p (atm) between the fluid and atmosphere, and the initial temperature of the escaping gas were varied to determine the resulting leakage rate. The heat leak in watts required to vaporize the liquid which provides the indicated flow rates is also included in the results. The dimensions used in the … more

Date: November 2, 1988

Creator: Wendlandt, J.M.

Partner: UNT Libraries Government Documents Department

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Pulse to pulse beam trajectory determination at the IP

It has long been known that a precise measurement of the SLC beam trajectory through the IP region is vital both from a machine and a detector point of view. One of the primary techniques used to maximize luminosity is the measurement of the deflection angle of one beam produced by the electromagnetic interaction with the other beam. In order to implement this procedure a pair of precision Beam Position Monitors (BPMs) were installed within the Final Triplet of quadrapoles on each side of the I… more

Date: August 2, 1988

Creator: Koska, W. & Wagner, S.

Partner: UNT Libraries Government Documents Department