AMS makes it possible to detect the number of rare isotopes, rendering each particles of ions highly energized. For accelerating ions, a huge system constituted of an tandem accelerator producing high voltage and other optical elements is required. The accelerator itself is enclosed in electrically insulating gas for avoiding sparks. The tank, whose head part is shown in lower picture, has 2.1m diameter and 8.4m length. The picture illustrates a view of analyzing system. An analyzing magnet separates accelerated isotopes which have different masses, and then rare isotopes are purified in the beam line shown in the center of the picture. At last, the total energy and lost energy of each particle are measured within a gas chamber. The whole beam line from the ion source to the detector is 38 m long.
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