X Band Power Generator

Krizan, Rene; Drazan, Libor

doi:10.1007/978-3-319-02294-9_58

Cited by 1 publication

(2 citation statements)

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“…The result agrees with those of an analytical model [10] assuming σ rest = 6 mrad, where σ rest is the contribution to the error in determination of the Cherenkov angle from sources other than the emission point uncertainty and due to the position resolution of the detector (see Ref. [10] for more detail). This contribution from other sources may be partially explained by non-uniformity along the thickness direction.…”

Section: Influence Of Refractive Index Uniformity On Rich Detectorssupporting

confidence: 85%

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X-ray radiographic technique for measuring density uniformity of silica aerogel

Tabata

Hatakeyama

Adachi

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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This paper proposes a new X-ray radiographic technique for measuring density uniformity of silica aerogels used as radiator in proximity-focusing ring-imaging Cherenkov detectors. To obtain high performance in a large-area detector, a key characteristic of radiator is the density (i.e. refractive index) uniformity of an individual aerogel monolith. At a refractive index of n = 1.05, our requirement for the refractive index uniformity in the transverse plane direction of an aerogel tile is |δ(n − 1)/(n − 1)| < 4% in a focusing dual layer radiator (with different refractive indices) scheme. We applied the radiographic technique to evaluate the density uniformity of our original aerogels from a trial production and that of Panasonic products (SP-50) as a reference, and to confirm they have sufficient density uniformity within ±1% along the transverse plane direction. The measurement results show that the proposed technique can quantitatively estimate the density uniformity of aerogels.

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Section: Influence Of Refractive Index Uniformity On Rich Detectorssupporting

confidence: 85%

“…This acceptable variation is based on the model calculation in Ref. [10], where the degradation of the Cherenkov angle resolution in the dual layer radiator scheme is very small. This was empirically verified in a dedicated beam test [11].…”

Section: Influence Of Refractive Index Uniformity On Rich Detectorsmentioning

confidence: 99%