Simulation of laser-Compton cooling of electron beams for future linear colliders

We study a method of laser-Compton cooling of electron beams for future linear colliders. Using a Monte Carlo code, we evaluate the effects of the laser-electron interaction for transverse cooling. The optics with and without chromatic correction for the cooling are examined. The laser-Compton cooling for JLC/NLC at $E_0=2$ GeV is considered.Comment: 18 pages, 12 figures, 21st ICFA Beam Dynamics Workshop on Laser-Beam Interactions, Stony Brook, New York, June 11-15, 200

Simulation of Laser-Compton Cooling of Electron Beams

We study a method of laser-Compton cooling of electron beams. Using a Monte Carlo code, we evaluate the effects of the laser-electron interaction for transverse cooling. The optics with and without chromatic correction for the cooling are examined. The laser-Compton cooling for JLC/NLC at E_0=2 GeV is considered.Comment: 11 pages, 12 figures, Given at 3nd International Workshop on Electron-Electron Interactions at TeV Energies, Dec 10-12, Santa Cruz, California, 199

Simulations of the Interaction Region in a Photon-Photon Collider

The status and initial performance of a simulation program CAIN for interaction region of linear colliders is described. The program is developed to be applicable for e+e-, e-e-, e-gamma and gamma-gamma linear colliders. As an example of an application, simulation of a gamma-gamma collider option of NLC is reported.Comment: 16 pages, 6 eps figures, use epsf.st

<Advanced Energy Generation Division> Quantum Radiation Energy Research Section

3-1. Research Activities in 202

Utilization of solar and wind energy to improve the quality of life for rural communities in Blora Regency – Indonesia: from triple helix to quadruple helix

5th International Conference Planning in the Era of Uncertainty (5th ICPEU 2021) 19th July 2021, Malang, IndonesiaStudies of triple helix field indicated that involvement of academician, business, government (ABG) were leading players in bringing up invention to be innovation. In the current decade, society actor served as the new actor added in the ABG-S frame concerning to the sustainability issue of innovation. This study aimed to present the role of the concerned actors in proposing an innovative product of a combined solar and wind energy generator installed in rural areas of Blora Regency. Blora was one of the regions in the Central Java Province that utilized electrical energy sourced from non-fossil. A Qualitative research method was utilized in this study to disclose the involvement of each actor in Blora's case. The study reported that ABG-S actors' involvement in implementing a combined solar and wind energy generator to the villages

Inverse Perovskite Oxysilicides and Oxygermanides as Candidates for Nontoxic Infrared Semiconductor and Their Chemical Bonding Nature

We have synthesized inverse-perovskite-type oxysilicides and oxygermanides represented by R3SiO and R3GeO (R = Ca and Sr) and studied their characteristics in the search for nontoxic narrow band gap semiconductors. These compounds exhibit a sharp absorption edge around 0.9 eV and a luminescence peak in the same energy range. These results indicate that the obtained materials have a direct-band electronic structure, which was confirmed by hybrid DFT calculations. These materials, made from earth abundant and nontoxic elements and with a relatively light electron/hole effective mass, represent strong candidates for nontoxic optoelectronic devices in the infrared range

Photoemission Properties of LaB6 and CeB6 Under Various Temperature and Incident Photon Energy Conditions

IPAC2016, Busan, KoreaPhotoemission properties of LaB₆ and CeB₆ were investigated at various cathode temperatures and different wavelengths of excitation laser to study for application of electron gun, especially for RF injector of infrared FEL facilities. It was found that the LaB₆ had higher photoemission property than CeB₆ at the same cathode temperature. In addition, LaB₆ can emit a measurable photoemission current being irradiated by laser with energy below work function at the cathode temperature higher than 1400 K. With increasing laser energy (over work function), a photoemission dependency on cathode temperature was getting lower. As the result, LaB₆ is revealed to have better properties than CeB₆ since LaB₆ has higher quantum efficiency than CeB₆ at same temperature