Totem Roman Pots



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Source page: http://commons.wikimedia.org/wiki/File:Totem_Roman_Pots.jpg
Description The aluminium foil covered things with a pipe sticking out is called a Roman Pot (because a group in Rome were the first ones to build such a detector) It is a movable detector that can go very close to the beam and measure protons that have lost energy by emitting a photon or a pomeron in the interaction with the beam coming in the opposite direction and did not break up in the process...The proton that has lost part of its energy then undergoes more deflection by the magnetic field in the beamline downstream of the experiment than the protons that have not lost any energy and can be detected slightly off-axis from the beam line. More information at the beginning of the <a href="http://flickr.com/photos/muriel_vd/sets/72157601170734375">set</a>.
Date 19 April 2009(2009-04-19), 01:56:22
Source originally posted to Flickr as Totem Roman Pots
Author Muriel
(Reusing this file)
Checked copyright icon.svg This image, which was originally posted to Flickr.com, was uploaded to Commons using Flickr upload bot on 08:21, 14 September 2008 (UTC) by Murielvd (talk). On that date it was licensed under the license below.
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EXIF data:
File name totem_roman_pots.jpg
Size, Mbytes 1.2307734375
Mime type image/jpeg
Camera manufacturer Konica Minolta Photo Imaging, Inc.
Camera model DiMAGE G600
Orientation of image 1
Image resolution in width direction 72
Image resolution in height direction 72
Unit of X and Y resolution 2
Exposure time 1/30 sec (0.0333333333333)
F number f / 2.8
ISO speed rating 100
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Exif version 0220
Lens focal length 8 mm
Date and time original image was generated 2009:04:19 01:56:22
Date and time image was made digital data 2009:04:19 01:56:22
Meaning of each component 
Brightness -1.2
Exposure bias 0
Maximum lens aperture 3
Metering mode 2
Supported Flashpix version 0100
Color space information 1
Exif image width 2816
Exif image length 2112
InteroperabilityOffset 3608
Digital zoom ratio 0
Focal length in 35 mm film 39 mm
Interoperability index R98
Interoperability version 0100
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