Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides

We report on the first measurements of coherent microwave impulses from high-energy particle-induced electromagnetic showers generated via the Askaryan effect in a dielectric-loaded waveguide. Bunches of 12.16 GeV electrons with total bunch energy of ∼10^{3}–10^{4} GeV were preshowered in tungsten,...

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Main Authors:	P. W. Gorham, J. Bynes, B. Fox, C. Hast, B. Hill, K. Jobe, C. Miki, R. Prechelt, B. Rotter, D. P. Saltzberg, S. A. Wissel, G. S. Varner, S. Zekioglu
Format:	Article
Language:	English
Published:	American Physical Society 2018-07-01
Series:	Physical Review Accelerators and Beams
Online Access:	http://doi.org/10.1103/PhysRevAccelBeams.21.072901

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spelling	doaj-d80f16d06a6f4d60bd4884826ace234b2020-11-25T01:06:34ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882018-07-0121707290110.1103/PhysRevAccelBeams.21.072901Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguidesP. W. GorhamJ. BynesB. FoxC. HastB. HillK. JobeC. MikiR. PrecheltB. RotterD. P. SaltzbergS. A. WisselG. S. VarnerS. ZekiogluWe report on the first measurements of coherent microwave impulses from high-energy particle-induced electromagnetic showers generated via the Askaryan effect in a dielectric-loaded waveguide. Bunches of 12.16 GeV electrons with total bunch energy of ∼10^{3}–10^{4} GeV were preshowered in tungsten, and then measured with WR-51 rectangular (12.6 mm by 6.3 mm) waveguide elements loaded with solid alumina (Al_{2}O_{3}) bars. In the 5–8 GHz TE_{10} single-mode band determined by the presence of the dielectric in the waveguide, we observed band-limited microwave impulses with amplitude proportional to bunch energy. Signals in different waveguide elements measuring the same shower were used to estimate relative time differences with 2.3 ps precision. These measurements establish a basis for using arrays of alumina-loaded waveguide elements, with exceptional radiation hardness, as very high precision timing planes for high-energy physics detectors.http://doi.org/10.1103/PhysRevAccelBeams.21.072901
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	P. W. Gorham J. Bynes B. Fox C. Hast B. Hill K. Jobe C. Miki R. Prechelt B. Rotter D. P. Saltzberg S. A. Wissel G. S. Varner S. Zekioglu
spellingShingle	P. W. Gorham J. Bynes B. Fox C. Hast B. Hill K. Jobe C. Miki R. Prechelt B. Rotter D. P. Saltzberg S. A. Wissel G. S. Varner S. Zekioglu Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides Physical Review Accelerators and Beams
author_facet	P. W. Gorham J. Bynes B. Fox C. Hast B. Hill K. Jobe C. Miki R. Prechelt B. Rotter D. P. Saltzberg S. A. Wissel G. S. Varner S. Zekioglu
author_sort	P. W. Gorham
title	Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides
title_short	Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides
title_full	Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides
title_fullStr	Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides
title_full_unstemmed	Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides
title_sort	picosecond timing of microwave cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides
publisher	American Physical Society
series	Physical Review Accelerators and Beams
issn	2469-9888
publishDate	2018-07-01
description	We report on the first measurements of coherent microwave impulses from high-energy particle-induced electromagnetic showers generated via the Askaryan effect in a dielectric-loaded waveguide. Bunches of 12.16 GeV electrons with total bunch energy of ∼10^{3}–10^{4} GeV were preshowered in tungsten, and then measured with WR-51 rectangular (12.6 mm by 6.3 mm) waveguide elements loaded with solid alumina (Al_{2}O_{3}) bars. In the 5–8 GHz TE_{10} single-mode band determined by the presence of the dielectric in the waveguide, we observed band-limited microwave impulses with amplitude proportional to bunch energy. Signals in different waveguide elements measuring the same shower were used to estimate relative time differences with 2.3 ps precision. These measurements establish a basis for using arrays of alumina-loaded waveguide elements, with exceptional radiation hardness, as very high precision timing planes for high-energy physics detectors.
url	http://doi.org/10.1103/PhysRevAccelBeams.21.072901
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Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides

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