Difference: MdtShifter (5 vs. 6)

Revision 62008-02-26 - AlbertoBelloni

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META TOPICPARENT name="AlbertoBelloni"

MDT Shift Manual

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Muon Pager 160226 on-call expert
ACR Muon desk 71365 shifter (i.e., you)
Sotiris 163046 Muon Run Coordinator
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Alberto 162877 DAQ
 
Enrico 162197 DAQ
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Alberto 162877 DAQ, Endcap
 
Ludovico 163664 Barrel
Fabio 164492 Barrel
Joao 162797 Endcap
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Power Supply

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  The LV can be turned on by changing the state for the whole subsection next to the name of the subsection on the tree on the top left part of the GUI (this changes the state for all chambers in that subsection, so only chambers that should be modified should be included). Alternatively, the chamber state can be modified on an individual basis. The trip current for the low voltage should be set to 15A.
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Turning on the HV

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Turning ON High Voltage

  Before turning on the HV, ensure that the gas situation is satisfactory. Please see the gas section in this manual for more detailed information.
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  Use the tab button to open the Menu and select channels. Then, scroll down (use the up/down arrows) to the desired module and channels and turn them on/off using the space bar.
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To exit, use the tab button to open the Menu again and select Log Out.
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To exit, use the tab button to open the Menu again and select Log Out. It is advisable to contact an expert who can give directions on how to use the terminal interface.
 

Gas

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XXXXX SOMETHING IS STILL MISSING!!!
 The MDT chambers operate with a mixture of Argon (93%) and CO$_2$ (7%) at a pressure of 3 bar. The gas is monitored in racks in UX15 that are connected directly to all the chambers, and these racks are then connected to the broader gas system. There is a PVSS interface in order to control and monitor the gas system remotely. This has been integrated into the general ATLAS DCS and may be accessed in the Control Room under the Muon Menu:

Muons $\rightarrow$ MDT DCS $\rightarrow$ MDT DCS FSM

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It is important to keep under control chamber pressures, and gas inflow/outflow rates.
 

Initialization

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The MDT chambers are initialized via DCS. The configuration parameters are read from the configurations database and input into a JTAG string that is sent out to the chambers. The chambers should be initialized once the electronics have power (LV on, see previous section on power supply).
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The MDT chambers are initialized via DCS. The configuration parameters are read from the configurations database and input into a JTAG string that is sent out to the chambers. The chambers should be initialized once the electronics have power (Low Voltage ON, see previous section on power supply).
  Nine PCs are used for initialization (4 for the barrel, 4 for the endcap and 1 spare). These PCs are called pcatlmdtmdm1 to pcatlmdtmdm9. These machines may be accessed remotely (in the control room, there is a link from the Muons menu) and the login for these machines is:
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 GNAM is an Online Monitoring structure that allows monitoring of detector status and running conditions. For the MDTs during M5, GNAM has been implemented at the ROD level and provides histograms such as TDC and ADC spectra, hits per chamber and tube and so on. In order to setup GNAM it is necessary to provide chamber and run information. Before starting the run check and/or correct the files located in the directory:
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/db/tdaq-01-08-03/muons/data/gnam_setup/mdt
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/db/tdaq-01-08-04/muons/data/gnam_setup/mdt
  The filenames are chamberList- followed by the name of an MROD crate (e.g., chamberList-EC03.txt). In particular, chambers not included in the run should be commented out and the missing chambers should be added. It is critical that the user modifies the runtype flag depending on the type of run ( 1= noise; 2= cosmics). GNAM histograms are available
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  The Online Histogram Presenter (OHP) is a stand alone application displays the GNAM histograms, enabling the user to browse the histograms and display selected groups of histograms to be checked during the run. In order to configure OHP, in the main DAQ Panel select the file:
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OHP Opt: -c /db/tdaq-01-08-03/muons/segments/DQM/MDT.ohpconf.m5.xml -e ohpcommands.
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OHP Opt: -c /db/tdaq-01-08-03/muons/segments/DQM/MDT.ohpconf.m5.xml -e ohpcommands
  Select Read Info and select OHP in the monitoring tab. The OHP panel is organized in browser mode and with tabs which provide overview information per crate and per chamber.
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  For read-only access, the following credentials can be used:
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Username: %BLUEatlas
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Username: atlas
 
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Password: %BLUEinxer
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Password: inxer
  In order to enter information request a password to Federico.Zema@cernNOSPAMPLEASE.ch.
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  Connect to the power supply mainframe as explained in the manual. For each module that is turned on, temperatures are listed (you’ll have to scroll to the right)
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pstemp.png
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pstemp.png
 

MRODs temperatures

 
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