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The CLAS12 high threshold Cherenkov counter.

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Title: The CLAS12 high threshold Cherenkov counter.
Authors: Sharabian, Y.G.1 (AUTHOR) youris@jlab.org, Burkert, V.D.1 (AUTHOR), Biselli, A.2 (AUTHOR), Badui, R.3 (AUTHOR), Christo, S.1 (AUTHOR), Cuevas, C.1 (AUTHOR), Dong, H.1 (AUTHOR), Danagoulian, S.4 (AUTHOR), Ellis, A.1 (AUTHOR), Elouadrhiri, L.1 (AUTHOR), Eng, B.1 (AUTHOR), Hafidi, K.5 (AUTHOR), Illari, I.6 (AUTHOR), Jacobs, G.1 (AUTHOR), Joo, J.7 (AUTHOR), Joo, K.7 (AUTHOR), Kashy, D.1 (AUTHOR), Kubarovsky, A.V.7 (AUTHOR), Kubarovsky, V.P.1 (AUTHOR), Maiylian, S.8 (AUTHOR)
Source: Nuclear Instruments & Methods in Physics Research Section A. Jul2020, Vol. 968, pN.PAG-N.PAG. 1p.
Subjects: Cherenkov counters, Cherenkov radiation, Quartz crystals, Electron tubes, Electron scattering
Abstract: The High Threshold Cherenkov Counter (HTCC) is one of the detector systems of the CLAS12 spectrometer, and is used to generate a fast trigger signal in electron scattering experiments in the polar angle range from 5°to 35°. The HTCC is installed in front of the drift chambers and introduces a minimal amount of additional material within the acceptance. The HTCC is one unit whose core component is a multifocal mirror that consists of 60 lightweight ellipsoidal mirrors. It is important that the HTCC provides efficient coverage of the CLAS12 forward acceptance with no gaps. In order to achieve this, each sector of the CLAS12 Forward Detector is covered by 2 identical half-sector mirrors that focus Cherenkov light on 8 phototubes. The HTCC has a total of 48 channels with Electron Tubes 9823QKB photomultipliers that have a 5-in quartz face plate to detect Cherenkov light. The system provides rejection of charged π -mesons with momenta below 4.8 GeV for the reliable identification of scattered electrons. In this paper the details of the design, construction, calibration, and performance results of the HTCC are presented. [ABSTRACT FROM AUTHOR]
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: The CLAS12 high threshold Cherenkov counter.
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  Data: <searchLink fieldCode="AR" term="%22Sharabian%2C+Y%2EG%2E%22">Sharabian, Y.G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> youris@jlab.org</i><br /><searchLink fieldCode="AR" term="%22Burkert%2C+V%2ED%2E%22">Burkert, V.D.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Biselli%2C+A%2E%22">Biselli, A.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Badui%2C+R%2E%22">Badui, R.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Christo%2C+S%2E%22">Christo, S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cuevas%2C+C%2E%22">Cuevas, C.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dong%2C+H%2E%22">Dong, H.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Danagoulian%2C+S%2E%22">Danagoulian, S.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ellis%2C+A%2E%22">Ellis, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Elouadrhiri%2C+L%2E%22">Elouadrhiri, L.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Eng%2C+B%2E%22">Eng, B.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hafidi%2C+K%2E%22">Hafidi, K.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Illari%2C+I%2E%22">Illari, I.</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jacobs%2C+G%2E%22">Jacobs, G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Joo%2C+J%2E%22">Joo, J.</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Joo%2C+K%2E%22">Joo, K.</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kashy%2C+D%2E%22">Kashy, D.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kubarovsky%2C+A%2EV%2E%22">Kubarovsky, A.V.</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kubarovsky%2C+V%2EP%2E%22">Kubarovsky, V.P.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Maiylian%2C+S%2E%22">Maiylian, S.</searchLink><relatesTo>8</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Instruments+%26+Methods+in+Physics+Research+Section+A%22">Nuclear Instruments & Methods in Physics Research Section A</searchLink>. Jul2020, Vol. 968, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Cherenkov+counters%22">Cherenkov counters</searchLink><br /><searchLink fieldCode="DE" term="%22Cherenkov+radiation%22">Cherenkov radiation</searchLink><br /><searchLink fieldCode="DE" term="%22Quartz+crystals%22">Quartz crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+tubes%22">Electron tubes</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+scattering%22">Electron scattering</searchLink>
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  Data: The High Threshold Cherenkov Counter (HTCC) is one of the detector systems of the CLAS12 spectrometer, and is used to generate a fast trigger signal in electron scattering experiments in the polar angle range from 5°to 35°. The HTCC is installed in front of the drift chambers and introduces a minimal amount of additional material within the acceptance. The HTCC is one unit whose core component is a multifocal mirror that consists of 60 lightweight ellipsoidal mirrors. It is important that the HTCC provides efficient coverage of the CLAS12 forward acceptance with no gaps. In order to achieve this, each sector of the CLAS12 Forward Detector is covered by 2 identical half-sector mirrors that focus Cherenkov light on 8 phototubes. The HTCC has a total of 48 channels with Electron Tubes 9823QKB photomultipliers that have a 5-in quartz face plate to detect Cherenkov light. The system provides rejection of charged π -mesons with momenta below 4.8 GeV for the reliable identification of scattered electrons. In this paper the details of the design, construction, calibration, and performance results of the HTCC are presented. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=143060029
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        Value: 10.1016/j.nima.2020.163824
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