Step IV Construction

North Side Walls and End Walls20-27 May 2015

Stephen Plate, Brookhaven National Laboratory

2

Anchoring the upper shield plate to the framework at the west end

3

Installing one of four L-mounting brackets to the side walls at the west end.Brackets support the Virostek plates at each end and provide a continuous flux path into the side walls while accomodating tolerances.

4

West end,lower wall plate

Adjustable cams react thrust loads from end walls

Crossbar support brackets under mezzanine

Crossbars react north and south sides against each other to reduce tension loads on floor anchors

5

View from northwest corner of mezzanine

6

View from east mezzanine

Upper center section installed for fit-check only at this time

7

Installing first crossbar

transfer drill at assembly;each of 7 crossbars is unique.

8

Present Status• east and west end walls were installed, then

removed to give access for installation of the spectrometer waveguides as planned

• all crossbars are now installed• yet to be installed are the draw wires for

measuring deflection under magnetic forces

draw wire stanchions

Step V Design

10Viewed from north side

(3) one-piece center plates

2 removable sectionsfor RF maintenance

11

Step IV leg spacingDownstreamPRY expansion

12

Step V Status

• 12 detail drawings essentially complete, but will need:– positions of crossbars (J. Tarrant input)– access holes fro RF couplers

• 1 detail drawing needs to be completed• 6 assembly drawings need to be completed– assy drawings will not hold up the fabrication

• Steel plates from Japan arrive Phila., PA around 11 July