SLAC PEP-II
BABAR
SLAC<->RAL
Babar logo
HEPIC E,S & H Databases PDG HEP preprints
Organization Detector Computing Physics Documentation
Personnel Glossary Sitemap Search Hypernews
Unwrap page!
Det. Search
Who's who?
Meetings
FAQ
Images
Archive
Systems
Performance
Intern. region
Vertex Tracker
Drift chamber
DIRC
Calorimeter
IFR
LST
Magnet
Electronics
Trigger
Operations
Run Coordination
Contact Experts
Shift Takers Info
Operations Manual
Electronic Logbook
Ops Hypernews
Shift Signup
Check this page for HTML 4.01 Transitional compliance with the
W3C Validator
(More checks...)

BaBar DCH Prototype II Data Taking

This page defines the current procedure for taking cosmic data using Drift Chamber Prototype II.

Last Modified: Jignesh Parikh 15 Jan 2002

Steps for taking Data

In order to take cosmic-ray data, you must follow these steps:
  1. Log on to Proto II Workstation
  2. Turn On the Power Supplies
  3. Start the DAQ program
  4. Start the Run
  5. Stop the Run

Turn On the Power Supplies

Prototype II has two sets of high voltage power supplies (one for the scintillator trigger and one for the DCH wires), a low voltage supply for the front-end electronics, and a few independent crates.

Steps to be followed

1.Check water level in the chiller.Maintain water level in the chiller such that thermometer is dipping in the water.Start the chiller when this done.
2.Put the power on for Low Voltage.
3.Put the power on for High Voltage.
4.Check the Proto II chiller status.Green light indicates water is flowing.Red light indicates water is not flowing.

Start the DAQ program

1.Enter
 cd $BFROOT/detector/dch/DchProto2
in the terminal window.
2.After step1 is completed, Enter
 source DchTestStand/setup.csh

3.After step2 is completed, Enter
 startXyplex
4.A small window will appear on the screen having two options.
a)ROC26
b)JAY
Click on ROC26.
5.After step4 is completed, Enter
 startCalib
6.Another small window will appear having three options.
a)Reboot ROM
b)Run Calibration on the ROM
c)Validate Calibration
click on Reboot.Then Run Calibration.
7.Enter configuration key as
 4a2
8.Check if it runs successfully.If no,then try to fix the errors.

Start the Run

1.In the terminal window, enter
    DchTestStand/run-FCGUI.csh
2.Two windows will appear.
a)Event Level
b)Control Level
3.Check if the event level is completed successfully.If yes,type exit.This will make the event level ready.
4.Hit return in the control level window if step 3 is completed successfully.
5.Once steps 3 & 4 are completed successfully,we will get a window named Dataflow Finite State Machine Manager.
6.Click on Configured (Not the arrow but words)
7.Enter value of allchan.dat in environment as
 0x43f
8.Enter value
 0xffffffff
in triggerlist to show all triggers.

Stop the Run

1.Click on the arrow showing configured.Check if the control level window shows any error message.If yes,then try to fix the error.If not,then follow the arrows.
2.Once all the arrows are followed,quit the window.
3.Check if any error messages are there in control window.If yes,try to fix it.If no,quit the window.
4.Data taking has been successfully completed.