The operation of the SuperKEKB has been ongoing since 2016. vacuum systems main ring (MR) which consists a 7-GeV electron (HER) and 4-GeV positron (LER), damping (DR) for 1.1 GeV positrons in middle injector linac have working well as whole. As June 2022, maximum stored beam currents MR are 1.46 1.14 A LER HER, respectively, approximately 30 mA DR. pressure increase per unit current is steadily...

The overlayer growth of cobalt on Mo(ll0) and the adsorption of CO and deuterium on Co/Mo(llO) have been studied by Auger electron spectroscopy (AES), low-energy electron diffraction (LEED) and temperature-programmed desorption (TPD). Co grows layer by layer on Mo(ll0) at a sample temperature of 115 K. Annealing multilayers of Co on Mo(ll0) to > 400 K results in the formation of three-dimension...

Resonantly enhanced infrared laser-induced desorption of methane condensed on a single-crystal NaCl(100) surface is observed after excitation with the widely tunable infrared laser output of the free-electron laser at the free-electron laser for infrared experiments facility using mass spectroscopic detection and time-of-flight analysis. Desorption of methane is observed only when the exciting ...

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) is one of themost fundamental analysis techniques for proteins, peptides, and synthetic polymers to date. Along with field desorption (FD), fast atom bombardment (FAB), laser desorption coupled with time-of-flight (LD-TOF), secondary ion mass spectrometry coupled with time-of-flight (SIMS-TOF), and electr...

the adsorption of 2-mercaptobenzimidazole (2-mbi) on au(111) has been studied withcyclic voltammetry (cv), in-situ subtractively normalised interfacial ft-ir spectroscopy (sniftirs)and scanning tunnelling microscopy (stm). although adsorbed 2-mbi reduces the interfacial capacityand quenches the characteristic features of the cyclic voltammogram for sulfate adsorption,heterogeneous electron tran...

in the present investigation, a novel adsorbent, ionic liquid modified magnetic nanoparticles (il-fe3o4), was successfully synthesized and characterized by ft-ir spectroscopy, thermogravimetric analysis (tga), xrd analysis, scanning electron microscopy (sem) and theory of brunauer, emmett, and teller (bet) for removal of reactive orange 122 (ro-122) from aqueous solutions. the effects of variou...

We report the nonlocal desorption of chlorobenzene molecules from the Si(111)-(7×7) surface by charge injection from the laterally distant tip of a scanning tunneling microscope and demonstrate remote control of the manipulation process by precise selection of the atomic site for injection. Nonlocal desorption decays exponentially as a function of radial distance (decay length ∼100  A) from the...

The aluminum bending chambers for the Taiwan Photon Source (TPS) is designed to meet the requirement of ultra high vacuum condition for the electron beam of 3 ~ 3.3 GeV and 400 mA. The crotch absorbers are located far from the source to reduce the synchrotron radiation power density thus the design of the cooling is simple. A program of finite element analysis is applied to simulate the thermal...