May 1998

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Article Navigation > High Power Laser and Particle Beams > 1998 > 10(02): 0-

Abstract

Ｔｈｅ　ｔｗｏｓｃｒｅｅｎ　ｍｅａｓｕｒｅｍｅｎｔ　ｏｆｅｍｉｔｔａｎｃｅ　ｉｓ　ａ　ｓｔａｎｄａｒｄ　ｍｅｔｈｏｄ　ｏｆｔｅｎ　ｕｓｅｄｂｙ　ｍａｎｙ　ａｃｃｅｌｅｒａｔｏｒ　ｌａｂｏｒａｔｏｒｉｅｓ　ｉｎ　ｔｈｅｗｏｒｌｄ．　Ｉｎ　ｔｈｉｓ　ｍｅｔｈｏｄ　ｆｏｒｍｉｎｇ　ａ　ｂｅａｍ　ｗａｉｓｔａｔ　ｔｈｅ　ｌｏｃａｔｉｏｎ　ｏｆｔｈｅ　ｓｃｒｅｅｎ　ｉｓ　ａ　ｎｅｃｅｓｓａｒｙｃｏｎｄｉｔｉｏｎ．　Ｂｕｔ　ｉｎ　ｍａｎｙ　ｃａｓｅｓ　ｉｔ　ｉｓ　ｖｅｒｙ　ｄｉｆｆｉｃｕｌｔ　ｔｏ　ｓａｔｉｓｆｙ　ｔｈｉｓ　ｃｏｎｄｉｔｉｏｎ．　Ｉｎｓｔｅａｄｏｎｅ　ｃａｎ　ｕｓｅ　ａｎ　ｂｅａｍ　ｓｐｏｔ　ｍｉｎｉｍｉｚｉｎｇ　ｍｅｔｈｏｄ，ｉｎ　ｗｈｉｃｈ　ｔｈｅ　ｂｅａｍ　ｓｐｏｔ　ａｔ　ｓｃｒｅｅｎ　ｉｓ　ｆｏｃｕｓｅｄａｓ　ｓｍａｌｌ　ａｓ　ｐｏｓｓｉｂｌｅ．　Ｉｎ　ｔｈｉｓ　ｐａｐｅｒ?
- emittance,
- twoscreen measurement