Masking off inputs to L1 Muon

by Jeff Temple

(jtemple@fnal.gov, x8340)

Whenever any of the front ends from the muon system are disabled on the readout client, you must also disable the inputs from those front ends to Level 1 and Level 2.

IF YOU ARE UNSURE ABOUT WHETHER AN INPUT SHOULD BE ENABLED OR DISABLED, CHECK THE PAGE

http://www-d0online.fnal.gov/www/groups/l1muo/Current_Level_1_Muon_Status.html

TO SEE THE CURRENT STATUS OF ALL L1 MUON INPUTS

To disable an input into Level 1, follow these instructions (an example is shown below):

1)mutest@d0ol46~> /projects/l1muo/vme_gui/l1muon_inputs.py&

(a GUI window will appear)

2)Click on the correct note tab for the system whose front end you wish to disable. (You will be taken to the notebook page for that system.)

3)In this new notebook page, click on the button(s) for the front end(s) you wish to disable. (The mapping of the front ends here is the same as the mapping in the readout_client GUI. Enabled front ends are marked with a red button, and disabled front ends are marked with a gray button.)

4)Click on the "write trigger mask files" button. (A dialog box will appear, telling you which crates need to be restored. Acknowledge the dialog by clicking "ok I'll do it".)

5)Click on the "Crate controls" note tab to return to the main page.

6)Click on "restore" for all the crates that need to be restored

(ex: mtcc, mtcs, mtcn). You should see a green light appear, with the message "restore complete".

7)Issue an sclinit, and check that And/Or terms 192 and 193 on the Daq Monitor are both 47712 Hz. If so, you're done!

If you have any problems, call the Level 1 Muon pager:

(630) 266-1681

Example: Masking off PDT 116

This example will show all the steps needed to take the PDT 116 input out of the Level 1 muon system.

1) mutest@d0ol46:~>/projects/l1muo/vme_gui/l1muon_inputs.py&

(a GUI window will appear)

2) Click on the correct note tab for the system whose front end you wish to disable.

Since we want to disable PDT 116, we will click on the "PDT masks" tab:

3) In this new notebook page, click on the button(s) for the front end(s) you wish to disable.

To disable PDT 116, we click on the "116" button, which is located in section 6B of readout crate x3A. The button will switch from a red "enabled" button to a gray "disabled" button:

(The mapping of the front ends here is the same as the mapping in the readout_client GUI. Enabled front ends are marked with a red button, and disabled front ends are marked with a gray button.)

4) Click on the "write trigger mask files" button.

(A dialog box will appear, telling you which crates need to be restored. Acknowledge the dialog by clicking "ok I'll do it"):

5) Click on the "Crate controls" note tab to return to the main page.

6) Click on "restore" for all the crates that need to be restored (ex: MTCC, MTCN, MTCS).

Since the dialog box told us to restore the MTCC crate, we will press the 'restore' button on the MTCC line:

You should see a green light appear, with the message "restore complete".

7) Issue an sclinit, and check that And/Or terms 98 and 99 on the Daq Monitor are both 47712 Hz

(The picture below is outdated, and shows the old positions of the triggers.)

The input from PDT to Level 1 has now been successfully masked off.

If you have any questions or problems, call the Level 1 Muon pager: 630-266-1681