Large area TES spiderweb bolometer for multi-mode cavity microwave detect

Biasotti, M.; Bagliani, D.; Ceriale, V.; Corsini, D.; Bernardis, P. de; Gatti, F.; Gualtieri, R.; Lamagna, L.; Masi, S.; Pizzigoni, G.; Schillaci, A.

doi:10.1117/12.2057071

Cited by 3 publications

(4 citation statements)

References 11 publications

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“…The Short Wavelength Instrument for the Polarization Explorer (SWIPE) is a coarse-resolution balloon-borne CMB polarimeter, part of the Large Scale Polarization Explorer (LSPE) [42] mission, to be flown during the Arctic night. The instrument uses multi-moded TES bolometers [43,44], sensitive to a total of 8800 radiation modes in the 150, 220, 240 GHz bands, and a cryogenic rotating HWP to modulate CMB polarization [45] and mitigate systematic effects. Its flight is planned for the 2020/2021 season.…”

Section: Cmb Missions On Stratospheric Balloonsmentioning

confidence: 99%

Balloon-borne Cosmic Microwave Background experiments

et al. 2019

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Stratospheric balloon experiments play a unique role in current Cosmic Microwave Background (CMB) studies. CMB research has entered a precision phase, harvesting the detailed properties of its anisotropy, polarization and spectrum, at incredible precision levels. These measurements, however, require careful monitoring and subtraction of local backgrounds, produced by the earth atmosphere and the interstellar medium. High frequencies (larger than 180 GHz) are crucial for the measurements of interstellar dust contamination, but are degraded by atmospheric emission and its fluctuations, even in the best (cold and dry) sites on earth. For this reason, new balloon-borne missions, exploiting long-duration and ultra-long duration stratospheric flights, are being developed in several laboratories worldwide. These experiments have the double purpose of qualifying instrumentation and validating methods to be used on satellite missions, and produce CMB science at a relatively fast pace, synergically to ground-based CMB observatories.

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Section: Cmb Missions On Stratospheric Balloonsmentioning

confidence: 99%

Balloon-borne Cosmic Microwave Background experiments

et al. 2019

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“…Finally we discuss the results of the optimization for the specific case of LSPE-SWIPE, for each band of the instrument, constraining the detector parameters as well as the transition temperature of the film T C and its normal resistance R N . We show that, with these choices, we are able to push the TES technology to its best performance [5].…”

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Multi-mode TES Bolometer Optimization for the LSPE-SWIPE Instrument

et al. 2016

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In this paper we explore the possibility of using transition edge sensor (TES) detectors in multi-mode configuration in the focal plane of the Short Wavelength Instrument for the Polarization Explorer (SWIPE) of the balloon-borne polarimeter Large Scale Polarization Explorer (LSPE) for the Cosmic Microwave Background (CMB) polarization. This study is motivated by the fact that maximizing the sensitivity of TES bolometers, under the augmented background due to the multi-mode design, requires a non trivial choice of detector parameters. We evaluate the best parameter combination taking into account scanning strategy, noise constraints, saturation power and operating temperature of the cryostat during the flight.One of the most interesting goals in Cosmology nowadays is the detection of the primordial curl component ("B-mode") of the Cosmic Microwave Background (CMB) polarization at large angular scales. This tiny signal might provide the indirect confirmation of the inflationary paradigm since a background of primordial gravitational waves would leave such a characteristic imprint on the CMB. Transition Edge Sensors (TES) are the state of the art technology in CMB measurements. Thanks to their high sensitivity they are the choice of cutting-edge experiments both from ground and stratosphere. The readout strategies are mature enough to manage thousands of detectors. A step forward for applications which favor light collection efficiency per detector over spatial resolution, is represented by the use of multi-moded detectors We

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“…The demanding need of detecting these tiny polarized signals, i.e., of the order of fractions of lK, with photonnoise limited detectors drives the development of large focal plane arrays able to accommodate thousands of single-mode detectors, 6 or alternatively hundreds of multi-moded detectors. 8,9 The multi-mode solution is appealing when high angular resolution is not the driver of the measurement, as in the case of measurements of B-modes in the CMB polarization. In this case, a moderate-sized array of multi-moded detectors can collect the same number of modes as a much larger array of single-mode detectors.…”

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“…The total active area of the bolometers on the chip is about 300 lm 2 , which is extremely small compared to other recently described multimode detectors. 9 This can help to decrease the influence of Cosmic Ray hits (spikes) on the measured signal. The outer diameter of the FSS ring shown in Fig.…”

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A distributed-absorber cold-electron bolometer single pixel at 95 GHz

Mahashabde

Tarasov

Salatino

et al. 2015

Applied Physics Letters

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We describe a Frequency Selective Surface (FSS) based distributed-absorber Cold-Electron Bolometer (CEB) pixel at 95 GHz integrated in a multi-moded horn. The FSS provides a resonant interaction with incident mm and sub-mm radiation and defines the bandwidth of the array while the horn provides the matching of the beam to the telescope optics. CEB detectors with matched impedance are integrated within the periodic elements of the FSS and generate a voltage response proportional to the incident optical power in the bandwidth of the FSS. A prototype pixel was designed, fabricated, and characterized at a temperature of 280 mK. We present optical response to blackbody radiation and fit it to the CEB model. For an absorbed power of 50 pW, we estimate an optical responsivity of 1.2 × 108 V/W and a readout dominated Noise Equivalent Power (NEP) of 1.8 × 10−15 W Hz−1/2. A measured bandwidth of 9 GHz of this detector array confirms the frequency selective nature. This prototype represents a possible solution as a detector for the 95 GHz channel of the SWIPE instrument on the LSPE balloon-borne telescope. This kind of FSS based mm-wave architecture can be easily scaled to other frequency ranges and used on any other balloon-borne telescope focal planes.

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Large area TES spiderweb bolometer for multi-mode cavity microwave detect

Cited by 3 publications

References 11 publications

Balloon-borne Cosmic Microwave Background experiments

Balloon-borne Cosmic Microwave Background experiments

Multi-mode TES Bolometer Optimization for the LSPE-SWIPE Instrument

A distributed-absorber cold-electron bolometer single pixel at 95 GHz

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