Vacuum problems during sample intro

• Granville phillips micro ion gauge controller shows 2e-5 air lock pressure
• degass gauge, jiggle connector cable, no help
• Leave pump running ~ 1.5 hour during sample transfer, analysis, then open gate valve
• prep still 8.8e-6, would expect better
• prep chamber 1.8e-7 (low 10's before opening), consistent with intro gauge
• close gate, pressure drops low 9's prep, increase to 1.7e-5
• Connect VQM cable to prep mass spec, turn on, mostly 18 amu in UHV
• open to air lock, lots of 32, 28, leak...
• pump air lock with prep ion pump, turbo valved off
• now mini IG 4.6e-7, prep 3.8e-8
• close valve to air lock, 14 and 28 drop, 18, 2, 44 relative rise, 1.9e-9
• reopen gate
• prep back to 3.8e-8
• 28, 14, 40, 32 rise, water related peaks fall
• now open turbo pumping valve
• pressure to 2.4e-7 prep, 9.8e-6
• 28, 32, 14 rise, also 40, air leak
• close turbo valve, pressure drops, 5e7 in air lock, 4.6e-8 prep, 14, 28, 32, 40 drop
• even with turbo valve closed, air lock pressure rises rapidly from mid 7's to 5's

Air leak in pumping, probably in manifold

• biggest leak was swagelock connected to mini flange at manifold pumping valve, tighten to reduce manifold to 1.1e-6 from 2e-5. 
• gasket (already suspicious) at 2.75" tee caught between flanges, ie offcenter, replaced.
• marginal improvement, still possible leak in manifold somewhere

Transfer rod to Prep Manipulator

1. Set manipulator position:
1. Top (vertical motion) micrometer: 11.05 mm
2. Z (horizontal insertion) screw: 105 mm (scale ends at 100, engraved on one support rod) There is also a red sharpie mark on the support rods
3. Rotary motion 300 degrees (red mark on top of support)
4. These positions are approximate, adjustment may be required to engage sample.
2. To transfer the sample to the stage: Slide the transfer rod forward until the long pins engage the rectangular hole in the side of the manipulator stage. 
1. If there is any resistance, adjust the height, insertion, rotation until the motion is easy.
3. The sample plate should slide into the dock on the manipulator.
1. If there is any resistance, adjust the height, insertion, rotation until the motion is easy.
2. Insert the sample plate fully, until the metal part of the transfer rod touches the dock, then rotate the transfer rod handle to open the jaws.
3. Now retract the transfer rod, leaving the sample plate on the manipulator dock.

Sample Introduction and Airlock

Here is the procedure to transfer samples from air to the long transfer rod in the prep chamber. From there samples can be moved either to the prep manipulator or to the parking carousel in the analysis chamber.

1. Start the "Prep" turbo pump, if it is not running already (see Turbo Pumps how to for details)
1. Start PV TurboViewer software on Auger-pxi. 
1. click connection wizard, set find multiple devices to 3 and click button, software should find three pumps. Drag window taller and click arrange. Click on speed display to toggle between rpm/Hz/% for speed. 
2. pump 001 is nano, 002 is prep/sample intro, 003 is ion gun
2. Prep turbo should reach 100% within a minute or two, power < 20 Watts, foreline pressue (push down arrow on ion gauge controller to see fore pressure) < 0.1 mBar.
2. Vent airlock
1. Close airlock pumping valve (large black plastic handle) and bypass pumping (small green valve handle). 
2. Open N2 vent supply valve (small green valve below table)
3. Turn off air lock ion gauge if on.
4. Open airlock vent valve (below airlock). You should hear gas flowing. Airlock pirani gauge should read about 780 torr (slightly above atmosphere).
5. Open air lock door. Do not let glass door fall open. 
3. Load samples
1. Up to 3 samples can be loaded. Use gloves and clean sample plates.
2. Normally sample surface is to the right as you face airlock. 
3. VT double-plate holders must face right
4. If flat sample plates will be heated on prep manipulator, load upside down (facing left) so sample surface faces heater after transfer.
4. Pump airlock
1. Close N2 vent valve
2.