(Travis, Jordan, Gerardo)

We are using the same setup as before, see here, leak detector attached to the MTP on the XBM.  Today's helium background reported by the leak detector was 2.0x10^-10 torr*l/sec.

List of items that we have leak checked is below, if crossed no signal detected above the background.

Input manifold:
VP5 (+X side)
VP7 (-X side)

Output manifold:
VP5 (-Y side)
VP7 (+Y side)

Filter cavity tube section B:
Bellows flange connecting to FCB1.

X-manifold
A-1C VP4
A-1C VP5
The 8" port on the X-manifold that was blanked off. 

Y-manifold
A-1F VP2
A-1F VP3

HAM5:
A1F2
Viewport, adapter, and components, jig for getting beam from HAM5 to HAM7.

BSC2:
G11
4.5" blank on dome gauge tree adapter.  Was gappy, so new gasket installed and re-torqued.

HAM2:
A2F1
A2F2
A2F4
A1F1 <-- signal detected at 4.7x10^-10 torr*l/sec, we may replace the seal on the next vent.

HAM3:
D4
This flange is divided into 3  4.5" CF ports, two of the 4.5" are fiber ports, both of them were tested and no leak was detected above the background (D4-1J1 and D4-2J1). 
On the last 4.5" port there is a 5WX, and on the first conflat that we tested there is a noticeable gap on the gasket joint, see photo.  A leak was detected, and the signal peaked to 1.2x10-09 torr*l/sec, we may replace the seal on the next vent.
We still have other flanges to test on this cross, and the rest of the chamber, but once again the background on the LD saturated due to the leak, we will continue leak checking once the background drops to acceptable numbers.

Other items left to check:
HAM3:
D4 The rest of the flanges on the cross.
A1F3
A1F4
D3
D2
D6

HAM7 and relay tube will be checked later, once the chamber is closed and pumped down.