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# NSF TRIPLE AXIS INFO

## STANDARD SETUP

SEQUENCE NAME DESCRIPTION
PB_polarizesetup.seq.txt This creates all the devices and opens Python communication with the 3He instrument rack. This must be done at the beginning of the experiment.
PB_Qmode.seq.txt This sets the sample and guide field currents for P $$\parallel$$ Q.
PB_Vmode.seq.txt This sets the sample and guide field currents for P $$\perp$$ Q.

PB_polarizeddestroy.seq.txt

This destroys all the devices and closes Python communication with the 3He instrument rack. This must be done at the end of the experiment.

NOTE: If the server re-starts, destroy all devices first and then run the sequence file to create devices.

## 7T SCM SETUP

SEQUENCE NAME DESCRIPTION
PB_polarizesetup7T.seq.txt This creates all the devices and opens Python communication with the 3He instrument rack. This must be done at the beginning of the experiment.
PB_SC7TGuides.seq.txt This sets the guide field currents for P $$\perp$$ Q.
PB_polarizeddestroy7T.seq.txt This destroys all the devices and closes Python communication with the 3He instrument rack. This must be done at the end of the experiment.

NOTE: If the server re-starts, destroy all devices first and then run the sequence file to create devices.

## NSF CELL FLIPPING

SEQUENCE NAME DESCRIPTION
PB_OffOff.seq.txt This corresponds to the 'A' state.
PB_ONOff.seq.txt This corresponds to the 'B' state.
PB_OffON.seq.txt This corresponds to the 'C' state.
PB_ONON.seq.txt This corresponds to the 'D' state.

## MEASUREMENT MODIFIER

DESCRIPTION MODIFIER(S)

Beam profile: size, slits, etc

• pb wide
• pb 1 cm
Experiment type
• pb 999 (inelastic or powder)
• pb 60 (elastic)
Flipping ratio
• pb fr
Empty cell transmission
• pb mt

Polarizer cell transmission

Polarizer killed cell

• pb p cell name
• pb po cell name

Analyzer cell transmission

Analyzer cell killed

• pb a cell name
• pb ao cell name

## Contacts

Created June 10, 2019, Updated November 15, 2019