The Bristol HIDAC 2D-ACAR Spectrometer

S B Dugdale; J Laverock; C Utfeld; M A Alam; T D Haynes; D Billington; D Ernsting

doi:10.1088/1742-6596/443/1/012083

The Bristol HIDAC 2D-ACAR Spectrometer

S B Dugdale
, J Laverock
, C Utfeld
, M A Alam
, T D Haynes
, D Billington
, D Ernsting

Department of Physics

Research output: Contribution to journal › Article › peer-review

13 Citations (SciVal)

Abstract

We describe the Bristol spectrometer for positron annihilation Fermi surface studies utilising high-density avalanche chambers (HIDACs) as position sensitive detectors. Measurements on α-SiO2 show, through the momentum distribution of para-positronium, the substantial improvement in resolution compared to Anger cameras. Measurements of the Fermi surface of V are used to determine the resolution. The new spectrometer is found to have an efficiency of 12.5 ± 0.6 % and a (coincidence) contribution to the position resolution of 0.96 ± 0.1 mm.

Original language	English
Journal	Journal of Physics: Conference Series
DOIs	https://doi.org/10.1088/1742-6596/443/1/012083
Publication status	Published - 10 Jun 2013

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10.1088/1742-6596/443/1/012083Licence: CC BY

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title = "The Bristol HIDAC 2D-ACAR Spectrometer",

abstract = "We describe the Bristol spectrometer for positron annihilation Fermi surface studies utilising high-density avalanche chambers (HIDACs) as position sensitive detectors. Measurements on α-SiO2 show, through the momentum distribution of para-positronium, the substantial improvement in resolution compared to Anger cameras. Measurements of the Fermi surface of V are used to determine the resolution. The new spectrometer is found to have an efficiency of 12.5 ± 0.6 \% and a (coincidence) contribution to the position resolution of 0.96 ± 0.1 mm.",

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T1 - The Bristol HIDAC 2D-ACAR Spectrometer

AU - Dugdale, S B

AU - Laverock, J

AU - Utfeld, C

AU - Alam, M A

AU - Haynes, T D

AU - Billington, D

AU - Ernsting, D

PY - 2013/6/10

Y1 - 2013/6/10

N2 - We describe the Bristol spectrometer for positron annihilation Fermi surface studies utilising high-density avalanche chambers (HIDACs) as position sensitive detectors. Measurements on α-SiO2 show, through the momentum distribution of para-positronium, the substantial improvement in resolution compared to Anger cameras. Measurements of the Fermi surface of V are used to determine the resolution. The new spectrometer is found to have an efficiency of 12.5 ± 0.6 % and a (coincidence) contribution to the position resolution of 0.96 ± 0.1 mm.

AB - We describe the Bristol spectrometer for positron annihilation Fermi surface studies utilising high-density avalanche chambers (HIDACs) as position sensitive detectors. Measurements on α-SiO2 show, through the momentum distribution of para-positronium, the substantial improvement in resolution compared to Anger cameras. Measurements of the Fermi surface of V are used to determine the resolution. The new spectrometer is found to have an efficiency of 12.5 ± 0.6 % and a (coincidence) contribution to the position resolution of 0.96 ± 0.1 mm.

UR - http://dx.doi.org/10.1088/1742-6596/443/1/012083

U2 - 10.1088/1742-6596/443/1/012083

DO - 10.1088/1742-6596/443/1/012083

M3 - Article

SN - 1742-6596

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

ER -

The Bristol HIDAC 2D-ACAR Spectrometer

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