ALMA band 10 optics tolerance analysis

ALMA band 10 optics tolerance analysis
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ALMA Band 10 光学公差分析

DOI:
10.1093/ietele/e89-c.2.170
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发表时间:
2008
期刊:
Softwaretechnik-trends
影响因子:
--
通讯作者:
K. Kaneko
K. Kaneko
中科院分区:
--
文献类型:
--
作者:
M. Candotti;Y. Uzawa;S. Shitov;Y. Fujii;K. Kaneko

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研究了低温恒温器和天线接口水平以及冷光学机械结构的机械公差对孔径效率损失和 ALMA 频段 10 前端两个正交主光束之间分离角的影响。使用简单的 ABCD 射线追踪方法和完整的电磁物理光学模拟来评估未对准假设下的光学性能。正如预期的那样,冷光学器件需要具有严格的公差才能满足 ALMA 前端规范。
The effects of mechanical tolerances for the cryostat and ante nna inte rface le vels and cold o ptics me chanical structure h ave been s tudied in relat ion to th e los s of ap erture efficiency and separation an gle bet ween the t wo o rthogonal main beams of the ALMA band 10 front-end. Simple ABCD ray tracing m ethod and full elect romagnetic p hysical op tics simulations were u sed to as sess th e op tics p erformance u nder misalignment as sumptions. As exp ected, tigh t toleran ces of t he cold op tics ar e required fo r th e fu lfilment of the ALMA f ront- end specifications.