This is the DAQ PC for the readout with the miniDAQ. Log in as lbrich.

User accounts

Login Type Notes
lbrich Local Use this to operate the DAQ
lhcbrich AFS Use for offline and AFS access


This is the original miniDAQ PC.

User accounts

Login Type Notes
lhcb Local Use this to operate the DAQ


This is the PC used for the Chimaera2-based readout. For the 2017 beam tests this PC is used for the Chimaera2 readout of the silicon tracker. The PC has a second NIC that is reserved for DAQ. The network addresses are:

Interface MAC IP Notes
eth0 00:22:4D:AA:E4:42 General purpose network
eth1 E8:94:F6:08:4A:41 DAQ network
DAQ switch 00:14:22:82:be:92 DAQ switch

User accounts

Login Type Notes
richtbuser Local Use this to operate the DAQ
lhcbrich AFS Use for offline and AFS access

richtbuser is granted the permission to run certain programs with elevated privileges through sudo.

Using wireshark

Wireshark is a useful tool for debugging the Chimaera2 readout. It has to be run with enhanced privileges. The richtbuser@lbrichtb account is allowed to run wireshark using the command

sudo wireshark

An additional step is needed for this to work when using it remotely, e.g.

ssh -Y richtbuser@lbrichtb
echo $DISPLAY  # to find the display name.
xauth list     # to locate the line corresponding to the display (look for the display number after host/unix:).
sudo xauth add <line-copied-from-xauth-list-output>

Now you can run wireshark with sudo as before.

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Topic revision: r3 - 2017-05-30 - StephenWotton
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