Online Trigger Shift - Instructions

This wiki page contains a list of items regarding what a shifter should do during the shift, which tools to use, etc. Specific details on how to perform the shift, e.g. how to use the tools and how to answer specific questions and face specific problems, should be given by the trigger experts, at each case.

Shift Tasks

Before starting the shift

Dot graph up-down-right Get information about what is happening in the control room; Is there an active run? What is the detector configuration? Which are the prescales used and why? If there is no active run, why not?

Dot graph up-down-right Who are the shift leader and the run control shifter? Introduce yourself, you'll need to work with them during the shift.

Dot graph up-down-right Talk with the previous online trigger shifter. Get up to date with the status of the trigger system. Read carefully the White Board.

During the shift

Regularly do:

Dot graph up-down-right Follow the status of the Run Control and entries in the elog from the different desks to know how things evolve.

Dot graph up-down-right Check the OHP histograms for monitoring the trigger performance. Instructions on what to check should explicitly be given by the trigger experts of the various slices!

Dot graph up-down-right Control the trigger rates in the Trigger Presenter and report upon abnormal behavior.

Upon request or need:

Dot graph up-down-right Change the prescales and if a specific prescale is asked, understand why.

Dot graph up-down-right Report important changes or specific situations in the White Board. Make e-log entries if so.

For the end of the shift

Dot graph up-down-right Make a summary in the e-log of what happened during the shift. This should contain a list of runs, what keys were used during the run, the status of the run and the reason why it stopped. It should also contain conclusions from the trigger performance monitoring.

Dot graph up-down-right Update the White Board and inform the Trigger Expert and the next shifter about the important issues that were raised during the shift.

Shift Tools

Standard Tools

These are tools that need to be always running on the shift desk.

Dot graph up-down-right Trigger Tool

Dot graph up-down-right DAQ Display

    Dot graph up-right SPYiGUI

    Dot graph up-right OHP

    Dot graph up-right Trigger Presenter

Dot graph up-down-right RunCom

Other Tools for Special Cases

Dot graph up-down-right DQMF

Dot graph up-down-right Nagios

Dot graph up-down-right OMD

Shift Training and Schedules

Dot graph up-down-right All shifters need to be trained before the shift. If somebody registered for a shift is not trained, will not do the shift. Details about the training to be defined.

Dot graph up-down-right All shifters have to register for two shadow shifts before entering the control room as shifters. If you have no shadow shift, your shift block won't count on OTP.

Dot graph up-down-right If you want to take online trigger shifts, you have to register for at least three blocks of shifts within a two month period.

-- AnnaSfyrla - 25 Jan 2009

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Topic revision: r1 - 2009-01-25 - unknown
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