The , branded "ALFA-X", is a ten-car experimental Japanese Shinkansen high-speed train operated by the East Japan Railway Company (JR East) in Japan capable of operating at up to to test technologies for future trains capable of operating at speeds of up to . The name is an acronym for "Advanced Labs for Frontline Activity in rail eXperimentation". The train was unveiled on 9 May 2019. Test runs are conducted primarily on sections of the Tōhoku Shinkansen between Sendai and Shin-Aomori, and occasionally on the Hokkaido Shinkansen. ==Design== The ALFA-X experimental trainset is being tested at
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The , branded "ALFA-X", is a ten-car experimental Japanese Shinkansen high-speed train operated by the East Japan Railway Company (JR East) in Japan capable of operating at up to to test technologies for future trains capable of operating at speeds of up to . The name is an acronym for "Advanced Labs for Frontline Activity in rail eXperimentation". The train was unveiled on 9 May 2019. Test runs are conducted primarily on sections of the Tōhoku Shinkansen between Sendai and Shin-Aomori, and occasionally on the Hokkaido Shinkansen. ==Design== The ALFA-X experimental trainset is being tested at speeds of up to to evaluate technologies intended for future trains operating in revenue service at speeds of up to . These include vibration-damping systems designed to reduce oscillation and the risk of derailment during major earthquakes, as well as body designs intended to reduce snow adhesion. Some design features have not been publicly disclosed in order to protect ongoing technical research.
Much of the design changes and experimentation conducted with the ALFA-X focuses on reducing noise at very high operating speeds.
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