Difference between revisions of "Detector Locations in SHMS"
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== Detector Positions == | == Detector Positions == | ||
| − | *[[ | + | *[[ Media:SHMS_Detector_Coordinates_120405.pdf | New table from Howard updated on (04/05/2012)]]. Modified so that detectors are vertically centered on the spectrometer axis. Previous the detectors were offset by +5cm ([[ Media:SHMS_Detector_Coordinates_110921.pdf | table ]] from Howard updated on (09/21/2011)). |
*[[ Media:dc1and2_0.08.png |DC beam envelope1]] and [[ Media:dc1and2_0.12.png |DC beam envelope2]] using the validated mc_shms for 40 cm target at 40 degrees and the cuts -10<delta<22 and abs(ytar)<20. envelope1 is for D/M=0.08 and 2 is for D/M=0.12 | *[[ Media:dc1and2_0.08.png |DC beam envelope1]] and [[ Media:dc1and2_0.12.png |DC beam envelope2]] using the validated mc_shms for 40 cm target at 40 degrees and the cuts -10<delta<22 and abs(ytar)<20. envelope1 is for D/M=0.08 and 2 is for D/M=0.12 | ||
| − | |||
*From Snake: Plots of x and y beam positions at the detectors :[https://hallcweb.jlab.org/wiki/images/7/7f/Comp_det_xy.gif NGC, DC, SC] and [https://hallcweb.jlab.org/wiki/images/0/08/Comp_det2_xy.gif HGC,AC, Preshower and Shower]. The colored points are for -10 < delta < 22%. The red boxes are for delta < -10%. The black box is size of detector. | *From Snake: Plots of x and y beam positions at the detectors :[https://hallcweb.jlab.org/wiki/images/7/7f/Comp_det_xy.gif NGC, DC, SC] and [https://hallcweb.jlab.org/wiki/images/0/08/Comp_det2_xy.gif HGC,AC, Preshower and Shower]. The colored points are for -10 < delta < 22%. The red boxes are for delta < -10%. The black box is size of detector. | ||
*From COSY: Plots of x and y beam positions at the detectors when the DC1 and 2 are offset from center by 5 cm: [[Media:det_pos_nc.png | detector outlines 1]] and when DC1 and 2 are centered [[Media:det_pos_center.png |detector outlines 2]] The blue points are for -10<delta<22 while the red are events that were generated over +/-30% delta acceptance and that arrived at the detector shown. | *From COSY: Plots of x and y beam positions at the detectors when the DC1 and 2 are offset from center by 5 cm: [[Media:det_pos_nc.png | detector outlines 1]] and when DC1 and 2 are centered [[Media:det_pos_center.png |detector outlines 2]] The blue points are for -10<delta<22 while the red are events that were generated over +/-30% delta acceptance and that arrived at the detector shown. | ||
| + | *[[http://www.jlab.org/Hall-C/upgrade/HALLC_12GEV/shms_beam_envelope.html Old 2008 Table of detector positions]] | ||
Latest revision as of 16:45, 5 April 2012
Detector Positions
- New table from Howard updated on (04/05/2012). Modified so that detectors are vertically centered on the spectrometer axis. Previous the detectors were offset by +5cm ( table from Howard updated on (09/21/2011)).
- DC beam envelope1 and DC beam envelope2 using the validated mc_shms for 40 cm target at 40 degrees and the cuts -10<delta<22 and abs(ytar)<20. envelope1 is for D/M=0.08 and 2 is for D/M=0.12
- From Snake: Plots of x and y beam positions at the detectors :NGC, DC, SC and HGC,AC, Preshower and Shower. The colored points are for -10 < delta < 22%. The red boxes are for delta < -10%. The black box is size of detector.
- From COSY: Plots of x and y beam positions at the detectors when the DC1 and 2 are offset from center by 5 cm: detector outlines 1 and when DC1 and 2 are centered detector outlines 2 The blue points are for -10<delta<22 while the red are events that were generated over +/-30% delta acceptance and that arrived at the detector shown.
- [Old 2008 Table of detector positions]
