====== Scaler channel description =====
The list below is a direct copy of the scaler description file **sweeperscaler.def**. This file maps channel names to channel numbers, and in addition determines the layout. Details about the Sweeper scaler GUI can be found [[sweeper daq tools#scaler display|here]]. 

^ Channel name   ^ Channel number ^ Description |
^ SWEEPER.Source    ^ 0  | Signal going to Sweeper ULM trigger module (generally from "left-up" FP Thin scintillator PMT) |
^ Second.Source  ^ 1  | Signal going to Secondary ULM trigger module (e.g. GRETINA) |
^ Ext1.Source    ^ 2  | Signal going to External-1 trigger module                   |
^ Ext2.Source    ^ 3  | Signal going to External-2 trigger module (Level3 trigger)               |
^ Sweeper.Trigger   ^ 4  | Sweeper triggers ("singles")                                   |
^ Coinc.Trigger  ^ 5  | Coincidence triggers (e.g. Sweeper and MoNA/LISA)                                       |
^ Ext1.Trigger   ^ 6  | External-1 triggers                                         |
^ Ext2.Trigger   ^ 7  | External-2 triggers                                         |
^ Second.Trigger ^ 8  | Secondary triggers                                          |
^ Raw.Trigger    ^ 9  | Raw triggers (including all sources)                        |
^ Live.Trigger   ^ 10 | Live triggers (including all sources)                       |
^ Raw.Clock      ^ 11 | Raw clock                                                   |
^ Live.Clock     ^ 12 | Live clock                                                  |
^ Thin.LU        ^ 13 | Signals from Left up PMT of FP Thin Scintillator            |
^ Thin.LD        ^ 14 | Signals from Left down PMT of FP Thin Scintillator          |
^ Thin.RU        ^ 15 | Signals from Right up PMT of FP Thin Scintillator           |
^ Thin.RD        ^ 16 | Signals from Right down PMT of FP Thin Scintillator         |
^ RF             ^ 17 | Signals from Cyclotron RF                                   |
^ Pot.Scint      ^ 18 | Signals from Pot scintillator                               |
^ XFP.Scint      ^ 19 | Signals from XFP (A1900 extended FP scintillator)           |