| 摘要 |
PROBLEM TO BE SOLVED: To provide a wiggler-magnet equipment having a clear picture in which blurring of the picture that has been a problem conventionally does not arises even if the wiggler magnet is made into multi-poles. SOLUTION: A ratio of magnitudes B2, B4, and B6 of magnetic-flux densities between even-numbered magnet, between a2, b2, between a4, b4, between a6, b6, excepting magnets a1, b1 and a7, b7 of the both ends of the magnet sequences 37, 38, and magnitudes B3, B5, of the magnetic-flux densities between odd-numbered magnet, between a3, b3, between a5, b5, is set to 1 to 2 or 2 to 1. And, the ratio of magnetic effective length L2, L4, and L6 and the magnetic effective length L3 and L5 of the odd-numbered magnet is set to 2 to 1 or 1 to 2. When, a product of the magnitudes B1, B7 of the magnetic-flux densities B2 to B6 and the effective length L1, L7 of magnets of these both ends along with the electronic beam is set as a standard, it is constituted so that all of the magnetic-flux densities of other than these both ends section can be equal, and the product of the magnitude B2 to B6 and the effective length L2 to L6 of the magnets other than these both ends section along with the electronic beam can become twice of the standard product.
|
