Beamline

This software is used to control the beamline valves, read/set the energy and read the mesh current on the MSB-STATION computer.

Item	Description	Options
Beam	beam status	OK (beam available for users) not available
Water	cooling water status (prefocus, entrance slit, monochromator)	OK (normal flux) warning (not enough flux) poor (no flux)
Pressures	pressure status along the beamline	OK (all safe) bad (not safe, e.g. during Ar sputtering)
Valves	status of 10 electropneumatic valves along the beamline	all closed (safe) partly open (some open, some closed) in standby (valves 1-9 open, valve 10 closed; beamline warming up) all open (beam in the analysis chamber, ready for data acquisition) operating... (opening or closing in progress)
Close	close all open valves
Standby	set valves 1-9 open, valve 10 closed to warm up the beamline or keep warm after acquisition	error is displayed if the opening is unsuccessful (e.g. interlocked by the beam operators during injection)
Acquire	open valve 10 to allow the beam in the analysis chamber for data acquisition
Scheduling	schedule opening or closing the beamline	OFF (no schedule) Close at [selected date/time], e.g. after the planned measurements Standby at [selected time], e.g. open valves 1-9 next morning to preheat the beamline before you arrive to work Standby when beam available preheat the beamline when the beam becomes available after a beam dump
Energy	energy set by the monochromator
Set	tune the energy to the selected value
Mesh current	photocurrent from the gold mesh reflecting the photon flux
View last	time range of the horizontal axis of the mesh current graph
Cursor	position of the mouse pointer in the mesh current graph
EXIT	closes this software
Average mesh currents	mesh currents at each energy averaged over the acquisition period; new averaging is started at each valve operation and energy tuning	black values are valid red values are not valid (valves closed, energy tuning...)