starting opera data taking with the cngs beam - desy · microsoft powerpoint - opera starting.ppt...
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![Page 1: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/1.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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Starting OPERA data taking
with the CNGS beam
![Page 2: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/2.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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Structure of the OPERA Experiment
31 target planes / supermodule (in total: 206336 bricks, 1766 tons)
υυυυ
TargetsMagnetic Spectrometers
Proposal: July 2000, installation at LNGS started in May 2003First observation of CNGS beam neutrinos : August 18th, 2006
SM1 SM2
![Page 3: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/3.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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Second Super-module details of the first spectrometer
OPERA in pictures
![Page 4: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/4.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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CNGS beam performances
50 ms10.5 µs 10.5 µs
![Page 5: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/5.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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Integrated proton intensity delivered onto the CNGS target
317 potAugust 21th, 8:25
August 18th , 13:40
![Page 6: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/6.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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Pot per extraction as a function of time
Extraction 1
Extraction 2
Sat, 19 Aug 2006 15:06:40 GMT Sun, 20 Aug 2006 05:00:00 GMT
![Page 7: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/7.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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t first extraction (ns)
50 ms
Ext1 Ext2
Cosmic rays background events
Zoom on the spill peaks
t closest extraction (ns)
10 µs
Event selection by using GPS timing informations
![Page 8: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/8.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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Beam event
CC event originated from material in front of the detector (BOREXINO, rocks)
![Page 9: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/9.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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CC event in the first magnet
µµµµ-track
(forgive about the red-line fit)
![Page 10: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/10.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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Angular distribution of all events
Polar angle
Azimuthal angle
Cosmic muons
Zoom on Beam events3.5° from below
Clean selected events
![Page 11: Starting OPERA data taking with the CNGS beam - DESY · Microsoft PowerPoint - OPERA starting.ppt Author Declais Created Date 8/21/2006 5:52:58 PM](https://reader035.vdocuments.site/reader035/viewer/2022063012/5fc84894da37d936b959eba8/html5/thumbnails/11.jpg)
LNGS, August 21st CNGS/OPERA startingOPERA collaboration
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Conclusions
• The CNGS beam is operating smoothly with very good quality• The tracking detectors of OPERA are taking data with practically no dead time • More than 100 beam correlated events have been observed with a clean time distribution• The recorded events show the expected tracking performances• OPERA is now ready for the next step: observing neutrino interactions in the Emulsion Cloud Chamber bricks