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A 2.8 K cryogen-free cryostat with compact optical geometry for multiple photon counting
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10.1063/1.3116443
/content/aip/journal/rsi/80/4/10.1063/1.3116443
http://aip.metastore.ingenta.com/content/aip/journal/rsi/80/4/10.1063/1.3116443
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Left: overall view of the cryostat. Right: optical geometry in the vertical plane perpendicular to the circular windows (not to scale). Distance between the center of the cryostat and the outside windows has been reduced to 15 mm to enhance light collection efficiency. In this see-through geometry, the optical center sees each window with a fraction of the total solid angle of 20%.

Image of FIG. 2.
FIG. 2.

Spectrum obtained with a source irradiating a BGO crystal in the optical cryostat at 3 K. The photopeak (662 keV) is clearly visible around 3500 a.u. This demonstrates the efficiency of the optical geometry and the feasibility of using this setup to study crystals under excitation.

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/content/aip/journal/rsi/80/4/10.1063/1.3116443
2009-04-14
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A 2.8 K cryogen-free cryostat with compact optical geometry for multiple photon counting
http://aip.metastore.ingenta.com/content/aip/journal/rsi/80/4/10.1063/1.3116443
10.1063/1.3116443
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