Beam Line For Schools Run Shifter Instructions

This page is designed to help Run Control Shifter of the BL4S experiment. Please be sure that you read the general shift instructions in page BL4SShiftIntroduction.

The duties of the Run Control Shifter can be summarized as:

Checking Beam Status

Run Control shifter is responsible of checking the beam status and deciding on the to start and stop the new run according to it. There are two ways of checking the beam status.

From CPS Vistar Page

CPS stands for Cern Proton Synchrotron. You can observe the status of the CPS in all the experimental areas from CPS Vistar page. In big experiments like ATLAS and CMS, they are also using Vistar Pages to observe the status of the LHC Beam. Before staring and stopping a run and during your shift, check the monitor in the control room or the web page: You can also directly navigate through the bookmarks from your browser toolbar for "CPS status"


There is beam if the value near EASTA_ should be ~30, and you should see a image with rising and falling signals as seen in above image.

You can find the detailed information in page:, if you would like to learn more.

From BL4S Vistar Page

For BL4S experiment, we have our own vistar page! You can navigate through your browser toolbar for "BL4S status".You will see a screen like:


You can see the counts of the detectors, daily plan and ongoing runs from here. Observe sharp changes on the mean and sigma values. The units used here is "cm" for the mean values. The mean values sould be a a couple of cms and the counts should be on the order of the number of events read for regular runs. Discuss any big change with the shift leader.

Starting and Stopping a Run

The main responsibility of the run controller shifter is to start and stop the run. During the run you should watch the Error Report Service (ERS). In BL4S experiment, we are using the same data acqusition software that is used in ATLAS experiment. Here "Run" is defined as the data taking session. Once you changed the confugation or beam status then you should stop the current run and start a new one. The Shit Leader will help you about when to start and stop the run. To open the BL4S DAQ Software, you can click on the icon on your desktop.

(TODO: BL4S Logo here!)

If you have troubles with openning the DAQ (Data Acqusition) software, you can ask shift leader for help. You will see a page like below:


Running event display

-- SaimeSarikaya - 12 Aug 2014

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng BL4S_DAQ.png r1 manage 61.7 K 2014-08-18 - 18:43 SaimeSarikaya BL4S DAQ
PNGpng cps.png r1 manage 11.4 K 2014-08-18 - 17:26 SaimeSarikaya cps vistar
PNGpng vistar_bl4s.png r1 manage 172.5 K 2014-08-18 - 18:11 SaimeSarikaya bl4s vistar page
Edit | Attach | Watch | Print version | History: r14 | r5 < r4 < r3 < r2 | Backlinks | Raw View | Raw edit | More topic actions...
Topic revision: r3 - 2014-08-18 - SaimeSarikaya
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    BL4S All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2019 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback