Beam Wire chambers » History » Version 12
Beam Wire chambers¶
We have two chambers used to monitor the secondary beam.
Almost everything at Wire Chambers applies to the beam chambers.
- placed just downstream of LArIAT in a break in the beam pipe
- HV setting:
- Controller: ftbfwc02
- placed just before the NOvA target in MC7
- HV setting:
- Controller: ftbfwc07
These run using the FTBF wire chamber daq which can be accessed from one of the FTBF machines
ssh -XY firstname.lastname@example.org cd /home/tmp_forJason/EDIT2018/MWPC-MCenter (location subject to change) ./daq-mcenter_<target || upstream>.py data is saved to /home/tmp_forJason/EDIT2018/MWPC-MCenter/data
Monitoring and Plotting¶
There is an on/near-line monitoring script along with an offline version of which are also housed on the FTBF machines.
You need to have kinit rights to user extbeams (I need to make this more easily accessible -ATCS).
To run the offline script:
ssh -XY email@example.com cd mtestwire/ source py3/bin/activate python plot_wires_offline.py /home/tmp_forJason/EDIT2018/MWPC-MCenter/data/filename.dat
To run the monitoring script:
The daq needs to be running
ssh -XY firstname.lastname@example.org cd mtestwire/ source py3/bin/activate python plot_wires_nearline.py /home/tmp_forJason/EDIT2018/MWPC-MCenter/data/filename (*note there is no .dat ending)
Both scripts output images to: /home/nfs/extbeams/mtestwire/images