Sector 9 | BM Primary Computer Operations Cheat Sheet

9-BM Primary Computer Operations Cheat Sheet:

(Also see Secondary Computer Cheat Sheet)

Note: Click on Photos to Enlarge

Starting EPICS: On the secondary monitor there is a terminal set up. (If there is not a terminal, right-click the mouse and choose from the menu.) Type "bmepics". The most relevant windows open up automatically. Other windows can be accessed from the menu, which also appears. It is named "BM_Beamline_Control.adl".

Starting EPICS with ONLY the "BM_Beamline_Control.adl" window showing: "abmepics".

Automatic Front End Shutter operation: Open a terminal window and at the prompt type "9BMFEPS".

Starting SPEC: On the primary monitor, in a terminal window, go to your directory, then type, "fourc". To get help in SPEC, type "help".

Running an EXAFS scan: Make sure you are in your directory ("pwd"). Type "samplescan <filename>" . The file name must end in ".rgn", but this extension is NOT included when typing in the filename.

Scanning other motors: dscan motorname startposition endposition numberintervals timeateachpoint

Example: dscan samp_x –10 10 50 5

(This is a relative scan. Motors are returned to the original positions.)

For a list of SPEC Macros, click here.

Plotting in SPEC - SPEC will plot curves for different ion chambers as desired. To change the default displayed on screen: plotselect <ion chamber name>
Example: Plotselect i0
(Default Ion Chamber Plotted is i0)

To see a plot of another ion chamber for the same scan (default not changed):

Splot <ion chamber name>

Analysis Package: XOP Xplot

Plotting two or more sets of data simultaneously: load a scan, hit "save plot" after each set is plotted. Keep track of the x- and y- scales when doing this; the scale is chosen automatically for the most recently-loaded set.

Printing Plots: make sure that "lp %F" and NOTHING else is in the print window (the default is "lp –d %F".)