Data Acquisition Manual: How to run Neutron Time of Flight Measurements at nELBE
- Elastic Scattering Experiment -
DAQ preparations:
To run neutron time of flight measurement you first have to do some preparations:
1. | Switch on the electronics: | |||||
switch on
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(see here) | |||||
2. | Start MBS: | |||||
login to RIO41: | telnet rio41 user name: ntofdaq password: *********** |
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go to working directory | cd mbsrun/irmm/ | |||||
start MBS | mbs | |||||
initialise MBS | @start | |||||
3. | Set MBS initialisation parameters: | |||||
login to ZIRKONIA (in another terminal window) | ssh -X ntofdaq@zirkonia password: *********** |
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go to working directory | cd mbsrun/irmm | |||||
open setup.ini for text editing if you want to do some special settings |
xemacs setup.ini & | |||||
or open setup_short.ini for text editing if you want to change only the important special settings |
xemacs setup_short.ini & | |||||
4. | Open MBS monitoring window: | |||||
login to ZIRKONIA (in another terminal window) | ssh -X ntofdaq@zirkonia password: *********** |
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go to working directory | cd mbsrun/irmm | |||||
open mbsprint.l for monitoring (in another terminal window) | tail -f mbsprint.l |
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5. | Start LEA: | |||||
login to ZIRKONIA | ssh -X ntofdaq@zirkonia user name: ntofdaq password: *********** |
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initialize system variables | source .profile | |||||
go to working directory | cd lea/irmm/irmm_online | |||||
start LEA | lea -pro nel -men | |||||
choose right settings | Source: MBS samples Input file/node: rio41 |
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6. | Set LEA initialisation parameters: | |||||
login to ZIRKONIA (in another terminal window) | ssh -X ntofdaq@zirkonia password: *********** |
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go to working directory | cd lea/irmm/irmm_online | |||||
open setup_loc.ini for text editing if you want to do some special settings | xemacs setup_loc.ini & | |||||
7. | Switch on the detectors: | |||||
login to FWK103 (HV control PC) | rdesktop -g 1240x900 -a 16 -k de fwk103 user name: ntofdaq password: ********** |
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switch on the detectors you want to use (cf. cabeling scheme) | start "isegCANHVControl" via desktop shortcut | |||||
8. | Start RFIO server and client: | |||||
login to ZIRKONIA | ssh -X ntofdaq@zirkonia password: *********** |
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go to directory for list mode data files | cd /hdd1/ntofdaq/lmd/ | |||||
start RFIO dispatcher | rawDispRFIO | |||||
In MBS: connect to RFIO Server |
connect rfio zirkonia -disk |
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9. | Start monitor DAQ and monitoring window for ELBE Operators: | |||||
see Monitor DAQ manual |
Running the DAQ:
Now the measurement can be started. This has to be done in the MBS prompter (prm):
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If any problem occurs:
Problem | Solution | |||||||||
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If Vmeas is stable:
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