In this paper, we introduce a new type of M-MSGC, which has 600mm of active length. In order to achieve a high position resolution, G-LG method, which is using global and local information to locate the rough and fine position, is applied. We have designed, fabricated and tested the GLG M-MSGC plate. We could achieve gas gain of ~6000. And global and local position resolutions were estimate to be 52 and 2.7 mm, respectively.
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