2020 Vol. 32, No. 6
The influence of tracking jitter on the far-field spot of turbulent atmospheric transmission is analyzed. Based on Maxwell's electromagnetic field theory, the Fried coherence diameter is used to describe the atmospheric turbulence, and the far-field ...
In the field of inertial confinement fusion (ICF), UV laser can effectively improve the beam-target coupling efficiency and suppress the hydrodynamic instability of laser plasma interaction. Using large aperture KDP crystal or KD*P crystal to triple ...
Under normal pressure and temperature, aluminum alloy in air can be excited by Nd:YAG nanosecond laser with wavelength 532 nm, the collection and photoelectric conversion of the plasma emission spectrum are executed by a high-resolution spectrometer ...
Based on the diagnostic requirements of high spatial resolution and high energy spectral resolution in the implosion compression stage of laser inertial confinement fusion (ICF), this paper proposes a large field of view and monochromatic imaging sys...
Magnetized Liner Inertial Fusion (MagLIF) concept has promising potentials for future energy source (Phys.Plasmas, 2014, 21:072711), it is widely applicable to large-scale pulsed power generators such as the Primary Test Stand (PTS) facility (10 MA, ...
This paper presents a review summary of the current state-of-the-art stirring in reverberation chamber (RC). An RC is an important device for conducting electromagnetic compatibility, electromagnetic effect testing and wireless channel simulation in ...
This paper proposes a new-type periodical permanent magnet (PPM) focus system, each half period of which is composed of 1 magnetic pole and 5 permanent magnets, and the first, the third and the fifth magnets have reverse magnetization with the second...
On the basis of equivalent circuit of PIN limiter, we constructed an equivalent circuit model for the simulation of high power microwave effect of PIN limiter. The response property of PIN limiter under the excitation of single high power microwave p...
In this paper, an improved iterative fast Fourier transform (IFFT) based on the mutual coupling compensation matrix (MCCM) is introduced and applied to the low-sidelobe synthesis of wide-angle scanning phased arrays. Firstly, the MCCM is integrated i...
A fully-differential master-slave track-and-hold amplifier (MS-THA), with 20 GHz bandwidth is designed and fabricated using 0.13 μm SiGe BiCMOS technology. The MS-THA employs conventional switched-emitter-follower (SEF) as track-and-hold core circuit...
This paper presents an ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna, which has high isolation and double band-notch in the UWB band. The MIMO antenna consists of two half-cutting UWB antenna units which have high isolation (S21>...
The ultrafast electron diffraction (UED) facility located in Shanghai Jiao Tong University, driven by a linear electron accelerator, has a photocathode RF gun. Sometimes an RF gun arc might happen during the accelerator running, causing a cavity detu...
This paper introduces the approach to design a stripline beam position monitor(BPM) for the project of “THz High-flux Material Physical Property Testing System”, which is hosted by National Synchrotron Radiation Laboratory. Due to the non-orthogonal ...
The research of magnetic flux expulsion of 1.3 GHz single-cell superconducting cavity has been carried out with a new set of high precision magnetic measuring and compensating system, combining with 2 K vertical test system of IHEP. The magnetic fiel...
The Shanghai Advanced Proton Therapy Facility (APTR) project, proposed by the Shanghai Institute of Applied Physics (SINAP) of Chinese Academy of Sciences, has finished in the commissioning stage. As the key component of APTR complex, the injector sy...
Pulse forming network (PFN) is often used in high-power solid-state modulator, microwave driver and laser exciter to obtain high voltage and long pulse output with wide flat-top. Aiming at the common used Rayleigh PFN with equal inductor and capacito...
Surface roughening treatment on insulators is an important way to improve their vacuum surface flashover characteristics. However, flashover voltages of the insulators with the same roughness show big deviation because of the poor uniformity of the s...
Aiming at the problems that may arise in the work of the AC-DC-AC converter of the new fast-control power system of the Experimental Advanced Superconducting Tokamak (EAST), a control and protection method for each link is proposed. Based on in-depth...
The development of rapid detection technique with high sensitivity and high veracity for SARS-CoV-2 is of great importance for the prevention and control of epidemic. In this work, the trace spike protein (S protein) of SARS-CoV-2 in human saliva was...
This paper introduces a high-precision and continuously tunable medium bounded-wave electromagnetic pulse simulator, which adopts a widely tunable, automated novel high voltage pulse source of compact size with fast rise time. Based on fiber transmis...