利用介质加载波导对高能粒子簇射产生的微波切伦科夫脉冲进行皮秒定时
Picosecond timing of Microwave Cherenkov Impulses from High-Energy Particle Showers Using Dielectric-loaded Waveguides
摘要：
我们报告的第一次测量的相干微波脉冲从高能量粒子诱导的电磁簇射产生的介质加载波导中的Askaryan效应。将总聚束能量为$\sim 10^3-10^4$ GeV的12.16 GeV电子聚束预照射在钨中，然后用装有固体氧化铝（$Al_2 O_3$）棒的WR-51矩形（12.6 mm × 6.3 mm）波导元件进行测量。在5-8 GHz的$TE_{10}$单模带的存在下，在波导中的电介质确定，我们观察到带限的微波脉冲的振幅成比例的聚束能量。在不同的波导元件测量同一簇射的信号被用来估计相对时间差与2.3皮秒的精度。这些测量建立了一个基础，使用氧化铝加载的波导元件阵列，具有特殊的辐射硬度，非常高精度的定时平面的高能物理探测器。
英文摘要：
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 $\sim 10^3-10^4$ GeV were pre-showered 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 picosecond 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.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
