DC SQUID series array amplifiers with 120 MHz bandwidth (corrected)

Huber, M. E.; Neil, P.A.; Benson, Ray; Burns, D.A.; Corey, A.F.; Flynn, Christopher; Kitaygorodskaya, Y.; Massihzadeh, O.; Martinis, John M.; Hilton, G. C.

doi:10.1109/77.947383

Cited by 66 publications

(37 citation statements)

References 21 publications

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“…64 Each array consists of 100 individual SQUID elements with their input coils, feedback coils, and outputs connected in series. The input signals add constructively while the output noise voltage of the individual elements adds incoherently, resulting in a signal-to-noise ratio that is enhanced by √ n, where n = 100 is the number of elements.…”

Section: Series Array Squidmentioning

confidence: 99%

Frequency multiplexed superconducting quantum interference device readout of large bolometer arrays for cosmic microwave background measurements

Dobbs

Lueker

Aird

et al. 2012

Review of Scientific Instruments

138

105

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Millimeter-wave hybrid un-cooled narrow-gap hot-carrier and Schottky diodes direct detectors Appl. Phys. Lett. 101, 082108 (2012) Tuning the dynamic properties of electrons between a quantum well and quantum dots J. Appl. Phys. 112, 043702 (2012) Fully integrated InGaAs/InP single-photon detector module with gigahertz sine wave gating Rev. Sci. Instrum. 83, 083111 (2012) "N" structure for type-II superlattice photodetectors Appl. Phys. Lett. 101, 073505 (2012) Additional information on Rev. Sci. Instrum. A technological milestone for experiments employing transition edge sensor bolometers operating at sub-Kelvin temperature is the deployment of detector arrays with 100s-1000s of bolometers. One key technology for such arrays is readout multiplexing: the ability to read out many sensors simultaneously on the same set of wires. This paper describes a frequency-domain multiplexed readout system which has been developed for and deployed on the APEX-SZ and South Pole Telescope millimeter wavelength receivers. In this system, the detector array is divided into modules of seven detectors, and each bolometer within the module is biased with a unique ∼MHz sinusoidal carrier such that the individual bolometer signals are well separated in frequency space. The currents from all bolometers in a module are summed together and pre-amplified with superconducting quantum interference devices operating at 4 K. Room temperature electronics demodulate the carriers to recover the bolometer signals, which are digitized separately and stored to disk. This readout system contributes little noise relative to the detectors themselves, is remarkably insensitive to unwanted microphonic excitations, and provides a technology pathway to multiplexing larger numbers of sensors.

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Section: Series Array Squidmentioning

confidence: 99%

Frequency multiplexed superconducting quantum interference device readout of large bolometer arrays for cosmic microwave background measurements

Dobbs

Lueker

Aird

et al. 2012

Review of Scientific Instruments

138

105

View full text Add to dashboard Cite

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“…The narrow tungsten strips form the Transition-Edge Sensors (TESs), which are voltage biased, with the current through them monitored by a high-bandwidth SQUID array [32]. The tungsten is maintained stably within its superconducting to normal transition by electrothermal feedback based on Joule self-heating: if the sensor were hotter, the resistance would increase, decreasing the current and the Joule heating; an analogous argument applies if the sensor were cooler.…”

Section: The Phonon Measurementmentioning

confidence: 99%

Exclusion limits on the WIMP-nucleon cross section from the first run of the Cryogenic Dark Matter Search in the Soudan Underground Laboratory

Akerib¹,

Armel‐Funkhouser²,

Attisha³

et al. 2005

Phys. Rev. D

124

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The Cryogenic Dark Matter Search (CDMS-II) employs low-temperature Ge and Si detectors to seek Weakly Interacting Massive Particles (WIMPs) via their elastic scattering interactions with nuclei. Simultaneous measurements of both ionization and phonon energy provide discrimination against interactions of background particles. For recoil energies above 10 keV, events due to background photons are rejected with > 99.99% efficiency. Electromagnetic events very near the detector surface can mimic nuclear recoils because of reduced charge collection, but these surface events are rejected with > 96% efficiency by using additional information from the phonon pulse shape. Efficient use of active and passive shielding, combined with the the 2090 m.w.e. overburden at the experimental site in the Soudan mine, makes the background from neutrons negligible for this first exposure. All cuts are determined in a blind manner from in situ calibrations with external radioactive sources without any prior knowledge of the event distribution in the signal region. Resulting efficiencies are known to ∼10%. A single event with a recoil of 64 keV passes all of the cuts and is consistent with the expected misidentification rate of surface-electron recoils. Under the assumptions for a standard dark matter halo, these data exclude previously unexplored parameter space for both spin-independent and spin-dependent WIMP-nucleon elastic scattering. The resulting limit on the spin-independent WIMP-nucleon elastic-scattering cross-section has a minimum of 4×10 −43 cm 2 at a WIMP mass of 60 GeV c −2 . The minimum of the limit for the spin-dependent WIMP-neutron elastic-scattering cross-section is 2 × 10 −37 cm 2 at a WIMP mass of 50 GeV c −2 .

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“…Phonon signals are produced by low impedance (-0.2 Ohm) tungsten transition edge sensor (TES) arrays, and are preamplified by a SQUID array [2]. The interconnect resistances must be kept low to avoid thermal noise and reduction in sensitivity.…”

Section: Challengesmentioning

confidence: 99%

SuperCDMS Detector Readout Cryogenic Hardware

Seitz¹,

Ahmed²,

Akerib³

et al. 2009

AIP Conference Proceedings

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Abstract. SuperCDMS employs 1-inch thick gennanium crystals operated below 50mK in a dilution cryostat. Each detector produces ionization and phonon signals. Ionization signals are amplified by JFETs operating at 150K within an assembly mounted on the 4K cryostat stage. These high impedance signals are carried to the FETs by superconducting "vacuum coaxes" which minimize thermal conductivity, stray capacitance, and microphonics. Transition edge sensors produce low-impedance phonon signals, amplified by SQUID arrays mounted on a 600mK stage. Detectors are mounted in a six-sided wiring configuration called a "tower", which carries signals from 40mK to 4K. A flex circuit 3 meters in length carries amplified signals for each detector from 4K to a vacuum bulkhead. We describe the methods used to support the detectors, wiring and amplifier elements at various thermal stages, minimizing electrical noise and thermal loads.

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DC SQUID series array amplifiers with 120 MHz bandwidth (corrected)

Cited by 66 publications

References 21 publications

Frequency multiplexed superconducting quantum interference device readout of large bolometer arrays for cosmic microwave background measurements

Frequency multiplexed superconducting quantum interference device readout of large bolometer arrays for cosmic microwave background measurements

Exclusion limits on the WIMP-nucleon cross section from the first run of the Cryogenic Dark Matter Search in the Soudan Underground Laboratory

SuperCDMS Detector Readout Cryogenic Hardware

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