Difference between revisions of "HOWTO Take a new FDC Flatness Scan"
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# Make sure the driver box, VME crate, and Linux Desktop computer are all on | # Make sure the driver box, VME crate, and Linux Desktop computer are all on | ||
#: | #: | ||
| − | # Verify that the laser is mounted in the proper set of mounting holes. If scanning a cathode plane, the mounting screws should be in the middle set of holes. If scanning the granite rock, the mounting screws should be in the holes closest to the granite surface. | + | # Verify that the laser is mounted in the proper set of mounting holes. If scanning a cathode plane, the mounting screws should be in the middle set of holes. If scanning the granite rock, the mounting screws should be in the holes closest to the granite surface. Make sure the cable for the laser is routed through the restraint to keep the cable from brushing against the cathode during the scan. |
| + | #: | ||
| + | # Make sure the laser is plugged in. The cable is marked and should be plugged into the power strip that sits on top of the granite block. | ||
| + | #: | ||
| + | # Mount the plane to be scanned and make sure all mounting screws are tight. | ||
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# Open a window on the Linux Desktop and type ''MeasureFlatness'' and hit return. | # Open a window on the Linux Desktop and type ''MeasureFlatness'' and hit return. | ||
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| − | # Type in the plane number at the prompt and hit return. If scanning the granite rock, use "999" for the plane number. | + | # Type in the 3 digit plane number at the prompt and hit return. If scanning the granite rock, use "999" for the plane number. (''Note: The number must be a positive, 3-digit integer with leading zeros if needed'') |
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| − | # Type in the plane angle at the prompt. This needs to be a whole number without a decimal point. Round up if needed. | + | # Type in the 3 digit plane angle at the prompt. This needs to be a whole number without a decimal point. Round up if needed. (''Note it must be 3 digits, use leading zeros if needed.'') |
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# The laser should begin moving to the "Home" position and begin the scan shortly thereafter. It should take between 10 and 15 minutes to complete the scan and run the macros. | # The laser should begin moving to the "Home" position and begin the scan shortly thereafter. It should take between 10 and 15 minutes to complete the scan and run the macros. | ||
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# The Linux Desktop holding the scans is not connected to the outside network so any files must be retrieved via USB drive (or by writing them down ;) ). | # The Linux Desktop holding the scans is not connected to the outside network so any files must be retrieved via USB drive (or by writing them down ;) ). | ||
| + | #: | ||
| + | # When you are finished doing scans, be sure to unplug the laser and power down the stepper driver box (switch is on the back left side when facing the box from the front). | ||
== Contact == | == Contact == | ||
Please refer any questions to David Lawrence davidl@jlab.org x5567 | Please refer any questions to David Lawrence davidl@jlab.org x5567 | ||
Revision as of 12:43, 12 December 2008
To perform a new flatness measurement, do the following:
- Make sure the driver box, VME crate, and Linux Desktop computer are all on
- Verify that the laser is mounted in the proper set of mounting holes. If scanning a cathode plane, the mounting screws should be in the middle set of holes. If scanning the granite rock, the mounting screws should be in the holes closest to the granite surface. Make sure the cable for the laser is routed through the restraint to keep the cable from brushing against the cathode during the scan.
- Make sure the laser is plugged in. The cable is marked and should be plugged into the power strip that sits on top of the granite block.
- Mount the plane to be scanned and make sure all mounting screws are tight.
- Open a window on the Linux Desktop and type MeasureFlatness and hit return.
- Type in the 3 digit plane number at the prompt and hit return. If scanning the granite rock, use "999" for the plane number. (Note: The number must be a positive, 3-digit integer with leading zeros if needed)
- Type in the 3 digit plane angle at the prompt. This needs to be a whole number without a decimal point. Round up if needed. (Note it must be 3 digits, use leading zeros if needed.)
- The laser should begin moving to the "Home" position and begin the scan shortly thereafter. It should take between 10 and 15 minutes to complete the scan and run the macros.
- The results of the scan, both raw data files and plots produced by ROOT macros, will be placed in the /home/laser/FLATNESS/flatness_data and /home/laser/FLATNESS/flatness_data/images/XXX directories respectively where XXX is a unique name for the scan including the plane id, angle, and timestamp.
- The Linux Desktop holding the scans is not connected to the outside network so any files must be retrieved via USB drive (or by writing them down ;) ).
- When you are finished doing scans, be sure to unplug the laser and power down the stepper driver box (switch is on the back left side when facing the box from the front).
Contact
Please refer any questions to David Lawrence davidl@jlab.org x5567
