Difference: NCBHelenaWork (2 vs. 3)

Revision 322 Mar 2018 - HelenaLefebvre

Line: 1 to 1
 
META TOPICPARENT name="HelenaWork"

Non collision background for ATLAS detector

Line: 16 to 16
 imgedeb8b152e9c531f09031b2a5c261ff9.png
Added:
>
>
The lattice geometry in the vicinty of the ATLAS detector is shown below.

img5226e298b827055aa9c558be73e762de.png

 Simulation of both background sources are done using the FLUKA software and some existing data sets are located at:

http://bbgen.web.cern.ch/bbgen/

Changed:
<
<

LHC

>
>

LHC Run 2

The LHC went on upgrade after Run 1 between 2010 and 2013. The operation was restarted in early 2015 for its second research run, reaching 6.5 TeV per beam (13 TeV total center of mass at collision point, the present world record).

An example of a beam background event inside the ATLAS detector is shown below.

 
Added:
>
>
imge60e02348045e3f277cdc0704bfbdc5d.png
 

HL-LHC

Changed:
<
<
few
>
>
The HL-LHC plans to increase luminosity of the LHC around 2025. It will use the newest technology including cutting-edge 11-12 Tesla superconducting magnets, compact superconducting crab cavities, new technology for beam collimation and other improvements. The ATLAS detector will have to be upgraded as well to handle the larger collision rate. Most subdetectors will be upgraded in some way and also a new subdetector, the High Granularity Timing Detector (HGTD) will be installed in the gap between LAr calorimeters.

My work looks at the possibility of using the HGTD for identifying beam background using the detector's superb timing resolution. A schematic image of what we can expect to arrive to the detector including collision events and background is shown below.

img56087429bc09dbe7f3d7ac2d1fad91b3.png

 
META FILEATTACHMENT attachment="backgrounds.png" attr="" comment="" date="1521561229" name="backgrounds.png" path="backgrounds.png" size="90970" user="peap009" version="1"
Added:
>
>
META FILEATTACHMENT attachment="lattice.png" attr="" comment="" date="1521715434" name="lattice.png" path="lattice.png" size="279470" user="peap009" version="1"
META FILEATTACHMENT attachment="hgtd.png" attr="" comment="" date="1521716968" name="hgtd.png" path="hgtd.png" size="206966" user="peap009" version="1"
META FILEATTACHMENT attachment="ss2.png" attr="" comment="" date="1521718226" name="ss2.png" path="ss2.png" size="342614" user="peap009" version="1"
 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2021 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding RHUL Physics Department TWiki? Send feedback