Performance of a gas radiator ring imaging Cherenkov detector using multi-anode photomultiplier tubes

Artuso, M.; Boulahouache, C.; Blusk, S.; Butt, J.; Dorjkhaidav, O.; Menaa, N.; Mountain, R.; Muramatsu, H.; Nandakumar, R.; Randrianarivony, K.; Sia, R.; Skwarnicki, T.; Stone, S.; Wang, J. C.; Zhang, K.

doi:10.1016/j.nima.2005.11.221

Cited by 18 publications

(7 citation statements)

References 11 publications

(6 reference statements)

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“…Octafluorotetrahydrofuran (c-C 4 F 8 O) is considered for use as a radiating medium in Cherenkov detectors [1] and as a cleaning agent for chemical vapor deposition chambers to replace plasma processing gases with high global warming potential (GWP) [2]. The GWP of c-C 4 F 8 O is about 8'000 [2].…”

Section: Introductionmentioning

confidence: 99%

Electron attachment properties of c-C₄F₈O in different environments

Chachereau¹,

Fedor²,

Janečková³

et al. 2016

J. Phys. D: Appl. Phys.

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Abstract. The electron attachment properties of octafluorotetrahydrofuran (c-C 4 F 8 O) are investigated using two complementary experimental setups. The attachment and ionization cross sections of c-C 4 F 8 O are measured using an electron beam experiment. The effective ionization rate coefficient, electron drift velocity and electron diffusion coefficient in c-C 4 F 8 O diluted to concentrations lower than 0.6% in the buffer gases N 2 , CO 2 and Ar, are measured using a pulsed Townsend experiment. A kinetic model is proposed, which combines the results of the two experiments.

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Section: Introductionmentioning

confidence: 99%

Electron attachment properties of c-C₄F₈O in different environments

Chachereau¹,

Fedor²,

Janečková³

et al. 2016

J. Phys. D: Appl. Phys.

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“…i.e., the channel resulting in the loss of c-C 4 F 8 O, was measured at 294 K using a relative method (e.g., Baasandorj et al, 2013). The loss of c-C 4 F 8 O was measured relative to the loss of the reference compound CHF 3 during the same experiment:…”

Section: O( 1 D) Reaction Rate Coefficientmentioning

confidence: 99%

Abundances, emissions, and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran, c-C4F8O) in the atmosphere

et al. 2019

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Abstract. The first atmospheric observations of octafluorooxolane (octafluorotetrahydrofuran, c-C4F8O), a persistent greenhouse gas, are reported. In addition, a complementary laboratory study of its most likely atmospheric loss processes, its infrared absorption spectrum, and global warming potential (GWP) are reported. First atmospheric measurements of c-C4F8O are provided from the Cape Grim Air Archive (41∘ S, Tasmania, Australia, 1978–present), supplemented by two firn air samples from Antarctica, in situ measurements of ambient air at Aspendale, Victoria (38∘ S), and a few archived air samples from the Northern Hemisphere. The atmospheric abundance in the Southern Hemisphere has monotonically grown over the past decades and leveled at 74 ppq (parts per quadrillion, femtomole per mole in dry air) by 2015–2018. The growth rate of c-C4F8O has decreased from a maximum in 2004 of 4.0 to <0.25 ppq yr−1 in 2017 and 2018. Using a 12-box atmospheric transport model, globally averaged yearly emissions and abundances of c-C4F8O are calculated for 1951–2018. Emissions, which we speculate to derive predominantly from usage of c-C4F8O as a solvent in the semiconductor industry, peaked at 0.15 (±0.04, 2σ) kt yr−1 in 2004 and have since declined to <0.015 kt yr−1 in 2017 and 2018. Cumulative emissions over the full range of our record amount to 2.8 (2.4–3.3) kt, which correspond to 34 Mt of CO2-equivalent emissions. Infrared and ultraviolet absorption spectra for c-C4F8O as well as the reactive channel rate coefficient for the O(1D) + c-C4F8O reaction were determined from laboratory studies. On the basis of these experiments, a radiative efficiency of 0.430 W m−2 ppb−1 (parts per billion, nanomol mol−1) was determined, which is one of the largest found for synthetic greenhouse gases. The global annually averaged atmospheric lifetime, including mesospheric loss, is estimated to be >3000 years. GWPs of 8975, 12 000, and 16 000 are estimated for the 20-, 100-, and 500-year time horizons, respectively.

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“…Additionally, Equation 3.9 shows that the relative permittivity is proportional to the square of the index of refraction of the media. A summary of the properties for the gases used in the HGC are presented (Artuso et al, 2006), and C 4 F 10 (Chem Spider, 2018b) (RuggeroTurra, 2009). Measurements are taken at 1 atm and 22 o C for C 4 F 8 O and 0 o C for CO 2 and C 4 F 10 .…”

Section: Cherenkov Radiationmentioning

confidence: 99%

Blinded by the Light: Commissioning of the Hall C SHMS Heavy Gas Cherenkov Detector

Ambrose

2018

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Performance of a gas radiator ring imaging Cherenkov detector using multi-anode photomultiplier tubes

Cited by 18 publications

References 11 publications

Electron attachment properties of c-C₄F₈O in different environments

Electron attachment properties of c-C₄F₈O in different environments

Abundances, emissions, and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran, <i>c</i>-C<sub>4</sub>F<sub>8</sub>O) in the atmosphere

Blinded by the Light: Commissioning of the Hall C SHMS Heavy Gas Cherenkov Detector

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Performance of a gas radiator ring imaging Cherenkov detector using multi-anode photomultiplier tubes

Cited by 18 publications

References 11 publications

Electron attachment properties of c-C4F8O in different environments

Electron attachment properties of c-C4F8O in different environments

Abundances, emissions, and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran, &lt;i&gt;c&lt;/i&gt;-C&lt;sub&gt;4&lt;/sub&gt;F&lt;sub&gt;8&lt;/sub&gt;O) in the atmosphere

Blinded by the Light: Commissioning of the Hall C SHMS Heavy Gas Cherenkov Detector

Contact Info

Product

Resources

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Electron attachment properties of c-C₄F₈O in different environments

Electron attachment properties of c-C₄F₈O in different environments

Abundances, emissions, and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran, <i>c</i>-C<sub>4</sub>F<sub>8</sub>O) in the atmosphere