| Project/Area Number |
13650059
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Applied physics, general
|
|---|
| Research Institution | High Energy Accelerator Research Organization (KEK) |
|---|
Principal Investigator |
ZHANG Xiaowei KEK, PF, research associate, 物質構造科学研究所, 助手 (80217257)
|
|---|
| Project Period (FY) |
2001 – 2002
|
| Project Status |
Completed (Fiscal Year 2002)
|
| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2002: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2001: ¥1,500,000 (Direct Cost: ¥1,500,000)
|
|---|
| Keywords | X-ray crystal polygon-mirror / angular absolute calibration / monolithic double-crystal monochromator |
|---|
| Research Abstract |
An x-ray crystal polygon-mirror is much compact than that of an optical polygonmirror. In practices, the x-ray crystal polygon-mirror is a small silicon cylinder with diameter of 1mm and height of 10mm. For conveniently using this small device, the crystal cylinder was scraped from a quadratic prism with a pedestal of the sijte of 10mm cube remained. Axis of the cylinder is <110> crystal direction, where the crystal polygon-mirror has 340 diffractions for x-ray with wavelength of 0.06968nm.
There is a little difference on the angular position of x-ray diffractiop under the boundary condition of a flat crystal surface and a cylinder surface. But it was conformed practically that under the condition where the axis of the crystal polygonmirror is parallel to that of the rotary table within a quantity of sub-milliradilan, the peak position of x-ray diffractions from the cylinder crystal is consistent to that of the flat surface with position accuracy of sub-arc-second.
340 Diffractions from the x-ray crystal polygon-mirror were detected) using an x-ray beam of synchrotron radiation with wavelength of 0.06968nm. Fallowing the calibration process, we evaluated a precise rotary table equipped with rotary encoder within accuracy of 1 arc-sec.
|
