Absolute measurement of the Fano factor using a Skipper-CCD - INSPIRE

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Absolute measurement of the Fano factor using a Skipper-CCD

Dario Rodrigues
(
- Buenos Aires U. and
- Buenos Aires, CONICET and
- Fermilab
)
,
Kevin Andersson
(
- Buenos Aires U. and
- Buenos Aires, CONICET and
- Fermilab
)
,
Mariano Cababie
(
- Buenos Aires U. and
- Buenos Aires, CONICET and
- Fermilab
)
,
Andre Donadon
(
- Buenos Aires U. and
- Buenos Aires, CONICET and
- Fermilab
)
,
Ana Botti

Apr 23, 2020

6 pages

Published in:

Nucl.Instrum.Meth.A 1010 (2021) 165511

Published: Sep 11, 2021

e-Print:

2004.11499 [physics.ins-det]

DOI:

10.1016/j.nima.2021.165511 (publication)

Report number:

FERMILAB-PUB-20-283-E

View in:

reference search58 citations

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Abstract: (Elsevier B.V.)

Skipper-CCD can achieve deep sub-electron readout noise making possible the absolute determination of the exact number of ionized electrons in a large range, from 0 to above 1900 electrons. In this work we present a novel technique that exploits this unique capability to allow self-calibration and the ultimate determination of silicon properties. We performed an absolute measurement of the variance and the mean number of the charge distribution produced by ⁵⁵Fe X-rays, getting a Fano factor absolute measurement in Si at 123K and 5.9 keV. A value of 0.1190(25) was found and the electron–hole pair creation energy was determined to be 3.752(2) eV. This technology opens the opportunity for direct measurements of the Fano factor at low energies.

Note:

six pages, five figures, three tables, one equation

Fano factor
Skipper-CCD
Electron–hole pair creation energy
Fe

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