Telescope Array Project: Difference between revisions

Revision as of 15:52, 18 January 2021

Revision as of 08:44, 8 August 2022

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==FD station, telescope, and camera==

{{GeoGroup}}

The Telescope Array has three fluorescence detector (FD) telescope stations. As in the previous Fly's Eye and [[High Resolution Fly's Eye Cosmic Ray Detector|High Resolution Fly's Eye]] (HiRes) experiments, these detectors work by measuring the air fluorescence light emitted by an [[Air shower (physics)|extensive air shower]]. Each FD telescope consists of a primary mirror (made up of 18 &nbsp;smaller hexagonal mirror segments) and a camera. The cameras are made up of 256&nbsp;[[photomultiplier PMTstube]]s (photomultiplier tubesPMTs) which are sensitive to the ultra violet[[ultraviolet]] light generated by a cosmic ray air shower.<ref name=Tokuno />

The stations are locatedpositioned on a triangle about 35&nbsp;km apart from one another with the Central Laser Facility close to the triangle's center. Each stationof hasthe 12-14three stations has 12–14&nbsp;telescopes viewing the range from 3°–33°&nbsp;[[elevation to 33 degrees in angle|elevation]]. The three sites are named ''Black Rock Mesa'' (BRM), ''Long Ridge'' (LR), and ''Middle Drum'' (MD).<ref>
{{Citecite web
|title=Clear sky clocks
|url=http://www.telescopearray.org/index.php/research/clear-sky-clocks | title=Clear Sky Clocks
}}
</ref>
By combining the data from the three sites, it is possible to determine the primary energy, the arrival direction, and the maximum point of longitudinal development for an air shower.<ref name=Tokuno/>

point of longitudinal development for an air shower.<ref name=Tokuno />

:{| class="wikitable"

|+Stations

|-

| Black Rock Mesa
|| {{Coord|39|11|18|N|112|42|42|W|format=dms|display=inline|name=Black Rock Mesa|type:landmark_region:US-UT}}
|| <ref name="Blackrock">
{{cite web

|author =Danko, A. Danko

|url =http://cleardarksky.com/c/TcpAr4UTkey.html?1

|title =Telescope Array Black Rock Mesa FD

|author =A. Danko

|publisher =Telescope Array Project

|url =http://cleardarksky.com/c/TcpAr4UTkey.html?1

|accessdate access-date=2012-12-25

}}</ref>

|-

| Long Ridge

|Long Ridge||{{Coord|39|12|28|N|113|07|17|W|format=dms|display=inline|name=Long Ridge|type:landmark_region:US-UT}}||<ref name="Longridge">{{cite web

|url =http://cleardarksky.com/c/TcpAr3UTkey.html?1

| <ref name="Longridge">

{{cite web

|author =Danko, A. Danko

|title =Telescope Array Long Ridge FD

|publisher =Telescope Array Project

|url =http://cleardarksky.com/c/TcpAr3UTkey.html?1

|author =A. Danko

|accessdate access-date=2012-12-25

}}</ref>

|-

| Middle Drum

|Middle Drum||{{Coord|39|28|22|N|112|59|37|W|format=dms|display=inline|name=Middle Drum|type:landmark_region:US-UT}}||<ref name="Middledrum">{{cite web

|url =http://cleardarksky.com/c/TcpAr2UTkey.html?1

| <ref name="Middledrum">

{{cite web

|author =Danko, A. Danko

|title =Telescope Array Middle Drum FD

|publisher =Telescope Array Project

|url =http://cleardarksky.com/c/TcpAr2UTkey.html?1

|author =A. Danko

|accessdate access-date=2012-12-25

}}</ref>

|-

| Central Laser Facility
|| {{Coord|39|17|49|N|112|54|31|W|format=dms|display=inline|name=Central Laser Facility|type:landmark_region:US-UT}}
|| <ref name="Centrallaser">
{{cite web

|author =Danko, A.

|url =http://cleardarksky.com/c/TcpAryObUTkey.html?1

|title =Telescope Array Central Laser Facility

|publisher =Telescope Array Project

|author =A. Danko

|url =http://cleardarksky.com/c/TcpAryObUTkey.html?1

|accessdate access-date=2012-12-25

}}</ref>