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arXiv 1106.3472astro-ph.IM
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阿塔卡马紧凑型阵列天线

Atacama Compact Array Antennas

Masao Saito, Junji Inatani, Kouichiro Nakanishi, Takahiro Naoi, Masumi Yamada, Hiro Saito, Bungo Ikenoue, Yoshihiro Kato, Kou-ichiro Morita, Norikazu Mizuno, Satoru Iguchi

摘要:

我们报告的主要性能测试结果的阿塔卡马紧凑阵列(ACA)7米和12米的ALMA(阿塔卡马大型毫米/亚毫米阵列)天线。ACA天线的四个主要性能是全天空指向(不超过2.0弧秒)、偏移指向(< 0.6弧秒)、表面精度(对于12(7)m天线< 25(20)微米)、路径长度稳定性(3分钟内15微米)和高伺服能力(方位角为6度/秒,仰角为3度/秒)。ACA天线的高性能已经在海拔约2900米的现场安装设施区域进行了广泛的评估。指向性能,表面性能,和快速运动能力的测试结果证明。

英文摘要:

We report major performance test results of the Atacama Compact Array (ACA) 7-m and 12-m antennas of ALMA (Atacama Large Millimeter/submillimeter Array). The four major performances of the ACA antennas are all-sky pointing (to be not more than 2.0 arcsec), offset pointing (to be < 0.6 arcsec) surface accuracy (< 25(20) micrometer for 12(7)m-antenna), stability of path-length (15 micrometer over 3 min), and high servo capability (6 degrees/s for Azimuth and 3 degrees/s for Elevation). The high performance of the ACA antenna has been extensively evaluated at the Site Erection Facility area at an altitude of about 2900 meters. Test results of pointing performance, surface performance, and fast motion capability are demonstrated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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