Caen ELS BEST, User Manual, Page: 24 / 47

BEST User’s Manual
24
4. BEST Local GUI
This chapter describes the main features of the
BEST
Local GUI (Graphical User
Interface). To execute the program it is necessary to power on the
BEST
Central
Unit. The
BEST
Local GUI is already installed on the Linux OS. To run the
program simply click on the “
BEST
Local GUI” icon present on the Linux desktop.
The default Linux OS user and password are (case-sensitive):

User: best

Password: WeAreTheBest
4.1 Main Window
The main screen of the
BEST
Local GUI is shown in
Figure 16
.
The main graph is located in the upper section and shows the current beam position in
the XY (horizontal & vertical) plane. This is a 2D representation of the positions
derived from the currents first read by the
TetrAMMs
and then transformed in
positions using the usual difference-over-the-sum equations and the BPM scaling
parameters (see 4.3 for more info).
Various possible plots can be selected in the bottom section of the GUI in order to
better monitor and/or analyze X-ray beam properties or perform sanity checks on the
feedback system (see
Error! Reference source not found. ). The quantities are real-
time plots and the time window can be adjusted by the user.
A feedback control panel located in the top-right part of the GUI allows users to
activate, pause or reset the feedback controller, change the controller input/output
configuration and set the desired setpoints (see 4.1.2).
The PID configuration panel is located in the bottom-right part of the GUI and gives
to users the possibility to change and tune all PID parameters according to the
required system dynamics.