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

Abstract

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 $${\sim}{10}^{3}-{10}^{4}\text{ }\text{ }\mathrm{GeV}$$ were preshowered in tungsten, and then measured with WR-51 rectangular (12.6 mm by 6.3 mm) waveguide elements loaded with solid alumina ($${\mathrm{Al}}_{2}{\mathrm{O}}_{3}$$) bars. In the 5-8 GHz $$T{E}_{10}$$ 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.

Authors:
 [1];  [1];  [1];  [2];  [1];  [2];  [1];  [1];  [1];  [3];  [4];  [1];  [3]
  1. Univ. of Hawaii, Honolulu, HI (United States). Dept. of Physics and Astronomy
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
  4. California Polytechnic State Univ. (CalPoly), San Luis Obispo, CA (United States). Physics Dept.
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of California, Los Angeles, CA (United States); Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1460019
Alternate Identifier(s):
OSTI ID: 1461812
Grant/Contract Number:  
AC02-76SF00515; SC0009937; SC0010504
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Volume: 21; Journal Issue: 7; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; electromagnetism; radio frequency techniques; calorimeters; Cherenkov detectors; particle detectors

Citation Formats

Gorham, P. W., Bynes, J., Fox, B., Hast, C., Hill, B., Jobe, K., Miki, C., Prechelt, R., Rotter, B., Saltzberg, D. P., Wissel, S. A., Varner, G. S., and Zekioglu, S. Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides. United States: N. p., 2018. Web. doi:10.1103/physrevaccelbeams.21.072901.
Gorham, P. W., Bynes, J., Fox, B., Hast, C., Hill, B., Jobe, K., Miki, C., Prechelt, R., Rotter, B., Saltzberg, D. P., Wissel, S. A., Varner, G. S., & Zekioglu, S. Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides. United States. doi:10.1103/physrevaccelbeams.21.072901.
Gorham, P. W., Bynes, J., Fox, B., Hast, C., Hill, B., Jobe, K., Miki, C., Prechelt, R., Rotter, B., Saltzberg, D. P., Wissel, S. A., Varner, G. S., and Zekioglu, S. Thu . "Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides". United States. doi:10.1103/physrevaccelbeams.21.072901.
@article{osti_1460019,
title = {Picosecond timing of microwave Cherenkov impulses from high-energy particle showers using dielectric-loaded waveguides},
author = {Gorham, P. W. and Bynes, J. and Fox, B. and Hast, C. and Hill, B. and Jobe, K. and Miki, C. and Prechelt, R. and Rotter, B. and Saltzberg, D. P. and Wissel, S. A. and Varner, G. S. and Zekioglu, S.},
abstractNote = {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 ${\sim}{10}^{3}-{10}^{4}\text{ }\text{ }\mathrm{GeV}$ were preshowered in tungsten, and then measured with WR-51 rectangular (12.6 mm by 6.3 mm) waveguide elements loaded with solid alumina (${\mathrm{Al}}_{2}{\mathrm{O}}_{3}$) bars. In the 5-8 GHz $T{E}_{10}$ 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.},
doi = {10.1103/physrevaccelbeams.21.072901},
journal = {Physical Review Accelerators and Beams},
issn = {2469-9888},
number = 7,
volume = 21,
place = {United States},
year = {2018},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/physrevaccelbeams.21.072901

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