Study on Radiation from Microbunch Electrons

微束电子辐射的研究

基本信息

批准号：
09102003
负责人：
IKEZAWA Mikihiko
金额：
$ 39.68万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Specially Promoted Research
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

项目摘要

1. Studies on microbunch FEL were carried out using a linac facility of the Research Laboratory for Nuclear Science (LNS) at Tohoku University and that of Kyoto University Research Reactor Institute (KURR). We have clarified that the amplification of radiation of the TEMィイD200ィエD2 mode occurred in an open cavity of the cylindrical symmetry and studied fundamental properties such as the tuning characteristics and the spectral distribution of the out-put intensity. Fundamental information was obtained to develop the FEL of higher power.2. We have constructed systems of spectrophotometric measurement using coherent transition radiation as the light source. At KURR the intensity of the coherent source in the millimeter wave region was more intense than high pressure mercury lamp by 3 to 4 orders of magnitude. By observation of the absorption spectrum of NィイD22ィエD2O gas, the usefulness of the spectroscopic system was confirmed in the low energy region from 3 to several tens of wavenumber. At LNS a rapid-scanning interferometer was constructed which can be scanned in 70 seconds to observe a spectrum with a resolution of 0.5 wavenumber.3. We constructed two kinds of bunch shape monitors using a rapid-scanning interferometer and a polychromator. The former type covers the wavenumber region from 15 μm to 5 mm with the maximum resolution of 0.25 wavenumber and the observation of the bunch shape takes about 5 s. The polychromator type covered the wavelength range from 0.2 to 4 mm with the resolving power of 10 and it can measure the bunch shape in about one second. Using the two systems, it has been demonstrated that fast monitors of bunch shape have been successfully developed for the sub-millimeter region, or pico-second region in time scale. It will be easy to extend the region of monitoring to visible and UV region, or femto-second region.

1。使用Toohoku大学核科学研究实验室（LNS）和京都大学研究反应堆研究所（Kurr）的Linac设施进行了微脑FEL研究。我们已经澄清说，TEMII D200 D2模式的辐射放大发生在圆柱对称性的开放腔和Studiod基本特性（例如调音特征和螺距强度的光谱分布）中。获得了基本信息以开发高功率。2。我们已经使用相干过渡辐射作为光源构建了分光光度测量系统。在库尔（Kurr），毫米波区域中相干源的强度比高压汞灯（3至4个数量级）更强烈。通过观察NYI D22E D2O气体的抽象光谱，在低能量区域从3至几十波数字的低能区域中证实了光谱系统的有用性。在LNS，构建了一个快速扫描的干涉仪，可以在70秒内扫描，以观察一个分辨率为0.5波数的光谱。3。我们使用快速扫描的干涉仪和多重色仪构建了两种束形状显示器。前者类型覆盖波数区域从15μm到5 mm，最大分辨率为0.25波数，并且观察束形状约为5 s。多晶仪类型覆盖了波长的范围为0.2至4 mm，其分辨能力为10，并且可以在大约一秒钟内测量束形状。使用这两个系统，已经证明了束形状的快速监视已成功地为亚毫米征区域或Pico-Second区域开发了时间尺度。将监测区域扩展到可见和紫外线区域或FEMTO秒区域很容易。