Published March 7, 2004 | Version v1
Journal article Metadata-only

Two-stage SQUID systems and transducers development for MiniGRAIL

Creators

  • 1. Kamerlingh Onnes Laboratorium, LION, Leiden University, Leiden (Netherlands)
  • 2. Low Temperature Division, Faculty of Science and Technology, Twente University, Enschede (Netherlands)
  • 3. Dip. Fisica, Universita Tor Vergata and INFN Roma2, Rome (Italy)

Description

We present measurements on a two-stage SQUID system based on a dc-SQUID as a sensor and a DROS as an amplifier. We measured the intrinsic noise of the dc-SQUID at 4.2 K. A new dc-SQUID has been fabricated. It was specially designed to be used with MiniGRAIL transducers. Cooling fins have been added in order to improve the cooling of the SQUID and the design is optimized to achieve the quantum limit of the sensor SQUID at temperatures above 100 mK. In this paper we also report the effect of the deposition of a Nb film on the quality factor of a small mass Al5056 resonator. Finally, the results of Q-factor measurements on a capacitive transducer for the current MiniGRAIL run are presented

Availability note (English)

Available online at http://stacks.iop.org/0264-9381/21/S1191/cqg4_5_118.pdf or at the Web site for the journal Classical and Quantum Gravity (ISSN 1361-6382) http://www.iop.org/

Additional details

Identifiers

URL
http://stacks.iop.org/0264-9381/21/S1191/cqg4_5_118.pdf; http://www.iop.org/;
DOI
10.1088/0264-9381/21/5/118;
PII
S0264-9381(04)69116-7;

Publishing Information

Journal Title
Classical and Quantum Gravity
Journal Volume
21
Journal Issue
5
Journal Page Range
p. S1191-S1196
ISSN
0264-9381
CODEN
CQGRDG

Conference

Title
5. Edoardo Amaldi conference on gravitational waves
Dates
6-11 Jul 2003
Place
Tirrenia (Italy)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35083488
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
AMPLIFIERS; COOLING; NIOBIUM; QUALITY FACTOR; RESONATORS; SQUID DEVICES; THIN FILMS; TRANSDUCERS
Descriptors DEC
ELECTRONIC EQUIPMENT; ELEMENTS; EQUIPMENT; FILMS; FLUXMETERS; MEASURING INSTRUMENTS; METALS; MICROWAVE EQUIPMENT; REFRACTORY METALS; SUPERCONDUCTING DEVICES; TRANSITION ELEMENTS