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magnetic-rigidity_setting [2013/12/21 08:41]
pereira |
magnetic-rigidity_setting [2014/12/03 18:36]
pereira |
| ====== Magnetic-rigidity setting ====== | ====== Magnetic-rigidity setting and Barney ====== |
| | Magnetic-rigidity settings are set via Barney. This program can be run by clicking in the corresponding icon of the [[Software#u6pc5 (data U6)|u6pc5]] desktop. The rigidities for the different segments are introduced from the A900 Barney page. The values can also be displayed in the S800 Barney page, which can be accessed by clicking the button **S3** in the A1900 Barney page. |
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| === Segments 6 and 7 (S800 Analysis line) === | === Segments 6 and 7 (S800 Analysis line) === |
| The magnetic rigidity ("Brho") of the segments 6 and 7 ([[Introduction#Analysis Line|analysis beam line]]) of the S800 Barney page displayed below will be set during the secondary-beam tuning (SDT) in cooperation with the [[https://groups.nscl.msu.edu/a1900|A1900 group]]. The energy loss in all detector systems ([[Detectors#Plastic scintillators|object scintillator]], object PIN, [[Detectors#Tracking Parallel Plate Avalanche Counters (TPPAC)|tracking PPACs]]) operating in the [[Introduction#Analysis Line|analysis beam line]] has to be considered for the Brho setting. This requires the knowledge of the beam Brho at the exit of the [[https://groups.nscl.msu.edu/a1900|A1900]], which is typically calculated with the program [[http://lise.nscl.msu.edu/lise.html|LISE++]] (follow this [[https://groups.nscl.msu.edu/a1900/software/lise++/|instructions]] and/or ask the [[https://groups.nscl.msu.edu/a1900|A1900 group]] for assistance). In the course of secondary-beam tuning, a scintillating target ("viewer") and camera setup at the target position of the S800 might be requested by the [[https://groups.nscl.msu.edu/a1900|A1900 group]]. | The magnetic rigidity ("Brho") of segments 6 and 7 ([[Introduction#Analysis Line|analysis beam line]]) of the S800 Barney page displayed below will be set during the secondary-beam tuning (SDT) in cooperation with the [[https://groups.nscl.msu.edu/a1900|A1900 group]]. The energy loss in all detector systems ([[Detectors#Plastic scintillators|object scintillator]], object PIN, [[Detectors#Tracking Parallel Plate Avalanche Counters (TPPAC)|tracking PPACs]]) operating in the [[Introduction#Analysis Line|analysis beam line]] has to be considered for the Brho setting. This requires the knowledge of the beam Brho at the exit of the [[https://groups.nscl.msu.edu/a1900|A1900]], which is typically calculated with the program [[http://lise.nscl.msu.edu/lise.html|LISE++]] (follow this [[https://groups.nscl.msu.edu/a1900/software/lise++/|instructions]] and/or ask the [[https://groups.nscl.msu.edu/a1900|A1900 group]] for assistance). In the course of secondary-beam tuning, a scintillating target ("viewer") and camera setup at the target position of the S800 might be requested by the [[https://groups.nscl.msu.edu/a1900|A1900 group]]. |
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| === Segment 8 (S800 Spectrograph) === | === Segment 8 (S800 Spectrograph) === |
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| THIS FIGURE IS OBSOLETE. NEW A NEWER VERSION | {{:wiki:barney_s800.png?850|Barney display for the S800.}} |
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| {{:wiki:barney_magnets.jpg?700|Barney display for the S800.}} | |
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| We strongly recommend Barney printouts after every change of the spectrograph. This not only provides a paper copy of all magnet settings from segment 0 to segment 8 but also saves this information in ascii format on disk (accessible via the A1900 web site under [[https://groups.nscl.msu.edu/a1900/archive/barney/|Beam Line Savesets]]). If an [[Determination of Angles and Momentum#Calculation of the inverse map|inverse map]] is desired for the tracking of the particles in the spectrograph, segment 8 Brho and the magnet currents of the dipoles and quadrupoles are needed to determine important input parameters for the calculation. | We strongly recommend Barney printouts after every change of the spectrograph. This not only provides a paper copy of all magnet settings from segment 0 to segment 8 but also saves this information in ascii format on disk (accessible via the A1900 web site under [[https://groups.nscl.msu.edu/a1900/archive/barney/|Beam Line Savesets]]). If an [[Determination of Angles and Momentum#Calculation of the inverse map|inverse map]] is desired for the tracking of the particles in the spectrograph, segment 8 Brho and the magnet currents of the dipoles and quadrupoles are needed to determine important input parameters for the calculation. |
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