Neutron Velocity Selector

lambda

prints the current wavelength in nm.

drive lambda <val>

changes wavelength to value <val> in nm.

lambda rot <val>

calculates the rotation speed for the wavelength given by <val>.

lambda wl <val>

calculates the wavelength for the rotation speed given by <val>.

nvs status

prints status summary.

nvs list

displays rotation speed and tilt angle.

nvs [rot=<val1>] [tilt=<val2>]

sets a new tilt angle and/or rotation speed.

nvs rotinteres

enables printing of status message about the current state of the selector when it is driven.

nvs loss

start a loss current measurement.

nvswatch [<par>] ...

is the object for monitoring the velocity selector and understands the commands for sample environment devices.