This is the source configuration of the MBE. The port numbers here correspond to the
values in the shutter status data (e.g. GMx_Shutter_Control.Value.txt). Each shutter
port has a binary value that is added up to give the logged data value. Port 1 
corresponds to a value of 1, port 2 => 2, port 3 => 4, port 4 => 16 etc.

O3_Nozzle_IonGauge on port 1
O3_Nozzle_Baratron on port 1
O3_Nozzle_RGA on port 1
O3_Nozzle_Direct on port 1
Side_Inlet_IonGauge on port 1
Side_Inlet_RGA on port 1
Side_Inlet_Direct on port 1
Ni_base on port 2
Sr_base on port 3
Mn_base on port 4
Pr_Base on port 5
La_base on port 8
SiO_base on port 9
Ti_voltage on port 10
Ti_current on port 10
GM1_TELEMARK_EBEAM_base on port 11
EIES_Channel1_Rate on port 11
MoO3_base on port 6
MoO3_tip on port 6
Ca_base on port 7