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脉冲管冰箱的动态声学优化,以快速降温
Ryan Snodgrass1,2, Vincent Kotsubo3,4, Scott Backhaus3,4
1National Institute of Standards and Technology, Boulder, CO, 80305, USA. ryan.snodgrass@nist.gov.
Nature communications
|April 23, 2024
概括
在脉冲管冰箱中优化声学合可显著加快冷却时间. 这一进步提高了冷温度的可访问性,用于研究,包括量子计算.
科学领域:
- 低温生化技术 (Cryogenics) 是一个非常重要的技术.
- 热力学是一种热力学.
- 应用物理 应用物理
背景情况:
- 脉冲管制冷器对于低温研究至关重要,在冷静器中消耗大量功率.
- 目前的商业设计具有固定声学合器,仅针对基本温度操作进行优化.
研究的目的:
- 为了研究声学合优化对脉冲管冰箱冷却性能的影响.
- 展示一个在降温过程中动态调声合的方法.
主要方法:
- 开发了用于温度依赖声学调的分析表达式.
- 动态优化了商用脉冲管冰箱的声学合.
主要成果:
- 与原始值相比,冷却时间的速度增加了1.7至3.5倍.
- 声功率测量表明损失机制,而不是压缩机容量,限制高温冷却.
结论:
- 动态声学调对于高效的脉冲管冰箱降温至关重要.
- 进一步优化可能会导致更快的冷却时间,影响冷研究可访问性和量子计算.
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