Front-end information¶

V1742 channel mapping (Last Modified: May 9 2019)¶

Input                            | Digitizer Channel | Trigger Channel 
---------------------------------+-------------------+------------------
Cherenkov                        | 3                 | NC
Scintillator Paddle 1 (Mock WC1) | NC                | 4
Scintillator Paddle 2 (Mock WC2) | NC                | 5
Scintillator Paddle 3 (Mock WC3) | NC                | 6
Scintillator Paddle 4 (Mock WC4) | NC                | 7
ToF DS 1 (SiPM)                  | 4                 | NC
ToF DS 2 (SiPM)                  | 5                 | NC
ToF DS 3 (SiPM)                  | 6                | NC
ToF DS 4 (SiPM)                  | 7                | NC
ToF US 1 (PMT)                   | 8                 | NC 
ToF US 2 (PMT)                   | 9                 | NC
ToF US 3 (PMT)                   | 10                | NC
ToF US 4 (PMT)                   | 11                | NC
ToF DS 1 (PMT)                   | 12                | NC
ToF DS 2 (PMT)                   | 13                | NC
ToF DS 3 (PMT)                   | 14                | NC
ToF DS 4 (PMT)                   | 15                | NC
WC 1 Logic                       | NC                | 0
WC 2 Logic                       | NC                | 1
WC 3 Logic                       | NC                | 2
WC 4 Logic                       | NC                | 3

VME crate¶

As user novadaq, the directory

/home/nfs/novadaq/

on novabeamlinedaq00 contains some useful utilities to communicate with the hardware. All CAEN provided software.

Run CAEN upgrader GUI:

./CAENUpgrader-1.6.3/CAENUpgraderGUI/CAENUpgraderGUI

Run CAEN V1742 digitizer (outside of DAQ):

wavedump-3.8.2/bin/wavedump /etc/wavedump/WaveDumpConfig_X742.txt

Run CAEN VME module:

./CAENVMELib-2.50/sample/CAENVMEDemo V2718 <base address, in hex (beginning 0x)> <link>

With this utilities, one can set the base address (option 2), set a register (option 1) and read etc.

CAEN base addresses:
Board Address
1742 3211
2495 3210
1495 0100

V1742 Digitizer¶

Post-Trigger¶

The V1742 has a register named POST_TRIGGER. This value is a percentage of the readout that is to be after the trigger. There is an implicit latency of around 40 ns, so in reality, the Post-Trigger percentage sets the percentage of the readout that will be after 40 ns past the trigger.

For an unknown reason, only certain values of POST_TRIGGER are accepted and must be found by trial and error.

Known working values¶

• 0
• 20
• 45

MWPC Controller(s)¶

Beamline:

• Hardware address: 00.80.55.00.00.68
• IP address: 131.225.176.70
• Name: ftbfwc03
• CD system reference number: S22041
• CD equipment ID number: 557912

Target:

• Hardware address: 00.80.55.EE.00.08
• IP address: 131.225.176.164
• Name: ftbfwc07
• CD system reference number: S22056

Log in (e.g.):

telnet ftbfwc03 <port>

Ports (according to here)

• 5000 - daq apps
• 5001 - emergency access
• 5002 - telnet sessions

MWPC Configuration and Registers