The long duration cryogenic system of the OLIMPO balloon–borne experiment: Design and in–flight performance

Coppolecchia, A.; Lamagna, L.; Masi, S.; Ade, Peter A. R.; Amico, G.; Battistelli, E. S.; Bernardis, P. de; Columbro, F.; Conversi, L.; D’Alessandro, G.; Petris, M. De; Gervasi, M.; Nati, F.; Nati, L.; Paiella, A.; Pisano, G.; Presta, G.; Schillaci, A.; Tucker, C.; Zannoni, M.

doi:10.1016/j.cryogenics.2020.103129

Cited by 10 publications

(8 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SWIPE makes use of a custom-designed main cryostat with a bath of 250 liters of superfluid helium, connected to the external low-pressure environment to operate at 1.6 K. The cryostat shell, the internal shields and the LHe tank are all made of aluminum alloys, to reduce their mass, as developed for the cryostats used in the ARGO [46], BOOMERanG [47], PILOT [48] and OLIMPO [49] balloonborne instruments. Two vapor-cooled intermediate shields, separated by super-insulation blankets, are used to minimize the radiative heat load on the LHe bath.…”

Section: Cryostatmentioning

confidence: 99%

The large scale polarization explorer (LSPE) for CMB measurements: performance forecast

Addamo,

Ade,

Baccigalupi

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

The measurement of the polarization of the Cosmic Microwave Background (CMB) radiation is one of the current frontiers in cosmology. In particular, the detection of the primordial divergence-free component of the polarization field, the B-mode component, could reveal the presence of gravitational waves in the early Universe. The detection of such component is at the moment the most promising technique to probe the inflationary theory describing the very early evolution of the Universe. We present the updated performance forecast of the Large Scale Polarization Explorer (LSPE), a program dedicated to the measurement of the CMB polarization. LSPE is composed of two instruments: LSPE-Strip, a radiometer-based telescope on the ground in Tenerife, and LSPE-SWIPE (Short-Wavelength Instrument for the Polarization Explorer) a bolometer-based instrument designed to fly on a winter arctic stratospheric long-duration balloon. The program is among the few dedicated to observation of the Northern Hemisphere, while most of the international effort is focused into ground-based observation in the Southern Hemisphere. Measurements are currently scheduled in Winter 2021/22 for LSPE-SWIPE, with a flight duration up to 15 days, and in Summer 2021 with two years observations for LSPE-Strip. We describe the main features of the two instruments, identifying the most critical aspects of the design, in terms of impact into performance forecast. We estimate the expected sensitivity of each instrument and propagate their combined observing power to the sensitivity to cosmological parameters, including the effect of scanning strategy, component separation, residual foregrounds and partial sky coverage. We also set requirements on the control of the most critical systematic effects and describe techniques to mitigate their impact. LSPE can reach a sensitivity in tensor-to-scalar ratio of σ r < 0.01, and improve constrains on other cosmological parameters.

show abstract

Section: Cryostatmentioning

confidence: 99%

The large scale polarization explorer (LSPE) for CMB measurements: performance forecast

Addamo,

Ade,

Baccigalupi

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The OLIMPO KIDs arrays are thermally connected to a 3 He evaporation refrigerator (Coppolecchia et al [35]). During the measurements reported here the temperature remained stable at 295 mK during photometric observations, and responded to the increased background during spectroscopic observations, rising by ∼ 0.5 mK to 1 mK.…”

Section: He Refrigerator Temperaturementioning

confidence: 99%

Kinetic Inductance Detectors for the OLIMPO experiment: in-flight operation and performance

Masi

Bernardis

Paiella

et al. 2019

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

We report on the performance of lumped-elements Kinetic Inductance Detector (KID) arrays for mm and sub-mm wavelengths, operated at 0.3 K during the stratospheric flight of the OLIMPO payload, at an altitude of 37.8 km. We find that the detectors can be tuned in-flight, and their performance is robust against radiative background changes due to varying telescope elevation. We also find that the noise equivalent power of the detectors in flight is significantly reduced with respect to the one measured in the laboratory, and close to photon-noise limited performance. The effect of primary cosmic rays crossing the detector is found to be consistent with the expected ionization energy loss with phonon-mediated energy transfer from the ionization sites to the resonators. In the OLIMPO detector arrays, at float, cosmic ray events affect less than 4% of the detector samplings for all the pixels of all the arrays, and less than 1% of the samplings for most of the pixels. These results are also representative of what one can expect from primary cosmic rays in a satellite mission with similar KIDs and instrument environment.

show abstract

“…The need of fast sky mapping, involving large fields of view and collecting areas, drove the development of increasingly large cryogenic systems (see e.g. [9][10][11][12][13][14][15]).…”

Section: Introductionmentioning

confidence: 99%

QUBIC V: Cryogenic system design and performance

Masi¹,

Battistelli²,

Bernardis³

et al. 2022

J. Cosmol. Astropart. Phys.

Self Cite

View full text Add to dashboard Cite

Current experiments aimed at measuring the polarization of the Cosmic Microwave Background (CMB) use cryogenic detector arrays with cold optical systems to boost their mapping speed. For this reason, large volume cryogenic systems with large optical windows, working continuously for years, are needed. The cryogenic system of the QUBIC (Q & U Bolometric Interferometer for Cosmology) experiment solves a combination of simultaneous requirements: very large optical throughput (∼40 cm2sr), large volume (∼1 m3) and large mass (∼165 kg) of the cryogenic instrument. Here we describe its design, fabrication, experimental optimization and validation in the Technological Demonstrator configuration. The QUBIC cryogenic system is based on a large volume cryostat that uses two pulse-tube refrigerators to cool the instrument to ∼3 K. The instrument includes the cryogenic polarization modulator, the corrugated feedhorn array, and the lower temperature stages: a 4He evaporator cooling the interferometer beam combiner to ∼1 K and a 3He evaporator cooling the focal-plane detector arrays to ∼0.3 K. The cryogenic system has been tested and validated for more than 6 months of continuous operation. The detector arrays have reached a stable operating temperature of 0.33 K, while the polarization modulator has operated at a ∼10 K base temperature. The system has been tilted to cover the boresight elevation range 20°-90° without significant temperature variations. The instrument is now ready for deployment to the high Argentinean Andes.

show abstract

The long duration cryogenic system of the OLIMPO balloon–borne experiment: Design and in–flight performance

Cited by 10 publications

References 16 publications

The large scale polarization explorer (LSPE) for CMB measurements: performance forecast

The large scale polarization explorer (LSPE) for CMB measurements: performance forecast

Kinetic Inductance Detectors for the OLIMPO experiment: in-flight operation and performance

QUBIC V: Cryogenic system design and performance

Contact Info

Product

Resources

About