IEC 61788-22-3:2022

Superconductivity - Part 22-3: Superconducting strip photon detector - Dark count rate

IEC 61788-22-3:2022 is applicable to the measurement of the dark count rate (DCR, RD) of superconductor strip photon detectors (SSPDs). It specifies terms, definitions, symbols and the measurement method of DCR that depends on the bias current (Ib) and operating temperature (T).
NOTE The data of measurement results in Annex A are based on measurements of one institute only. The standard will be updated after the data of a complete round robin test are available.

Supraconductivité - Partie 22-3: Détecteur de photons à bande supraconductrice - Taux de comptage en obscurité

L'IEC 61788-22-3:2022 s'applique au mesurage du taux de comptage en obscurité (DCR, RD) des détecteurs de photons à bande supraconductrice (SSPD). Elle spécifie les termes, les définitions, les symboles, ainsi que la méthode de mesurage du DCR qui dépend du courant de polarisation (Ib) et de la température de fonctionnement (T).
NOTE Les données des résultats de mesure figurant à l’Annexe A sont fondées sur les mesures d'un seul établissement. La norme sera mise à jour lorsque les données d'un essai interlaboratoire complet seront disponibles

General Information

• Status: Published
• Publication Date: 18-Aug-2022
• ICS: 29.050 - Superconductivity and conducting materials
• Technical Committee: TC 90 - Superconductivity
• Drafting Committee: WG 14 - TC 90/WG 14
• Current Stage: PPUB - Publication issued
• Start Date: 26-Aug-2022
• Completion Date: 19-Aug-2022

Standards Content (Sample)

IEC 61788-22-3 ®
Edition 1.0 2022-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Superconductivity –
Part 22-3: Superconducting strip photon detector – Dark count rate

Supraconductivité –
Partie 22-3: Détecteur de photons à bande supraconductrice – Taux de
comptage en obscurité
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IEC 61788-22-3 ®
Edition 1.0 2022-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Superconductivity –
Part 22-3: Superconducting strip photon detector – Dark count rate

Supraconductivité –
Partie 22-3: Détecteur de photons à bande supraconductrice – Taux de

comptage en obscurité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.050 ISBN 978-2-8322-4070-0

– 2 – IEC 61788-22-3:2022 © IEC 2022
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 10
4 Principle of the measurement method . 10
5 Apparatus . 11
5.1 Detector packaging . 11
5.2 Cryogenic system . 11
5.3 Measurement system . 13
6 Measurement procedure . 14
6.1 Measurement of temperature . 14
6.2 Measurement of switching current . 14
6.3 Measurement of R . 15
D
7 Standard uncertainty . 16
7.1 Type A uncertainty . 16
7.2 Type B uncertainty . 16
7.3 Uncertainty budget table . 17
7.4 Uncertainty requirement . 18
8 Test report . 18
8.1 Identification of device under test (DUT) . 18
8.2 Measurement conditions and results . 18
8.3 Miscellaneous optional report . 19
Annex A (informative) Results of the round robin test. 20
A.1 DUT packages . 20
A.2 Measurement conditions . 20
A.3 Measurement results . 21
Bibliography . 25

Figure 1 – Example of one dark count pulse in the pulse train in inset . 9
Figure 2 – Schematic curve of R as a function of normalized bias current . 11
D
Figure 3 – Schematic diagram of a typical DCR measurement system . 12
Figure 4 – Equivalent circuit of the DCR measurement . 13
Figure 5 – Typical current-voltage (I-U) curve of an SSPD . 15
Figure A.1 – Photograph of the DUT with an SSPD and a temperature sensor . 20
Figure A.2 – I-U curve and R curves . 22
D
Table 1 – Uncertainty budget table for R . 18
D
Table A.1 – Test data of DUT . 22
Table A.2 – Temperature sensitivity and bias current sensitivity above a normalized
bias current of 0,9 . 23

Table A.3 – u and u above a normalized bias current of 0,9 . 23
A B
Table A.4 – Budget table for R at a bias point of 5,25 µA (I /I = 0,955) . 23
D b sw
Table A.5 – DCR values measured at a bias point of 5,25 µA (I /I = 0,955) . 24
b sw
Table A.6 – Temperature measurement . 24

– 4 – IEC 61788-22-3:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SUPERCONDUCTIVITY –
Part 22-3: Superconducting strip photon detector – Dark count rate

FOREWORD
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