Physics package of the 35kg space active hydrogen maser for the ACES space mission of ESA

Zivanov, S.; Schweda, H.; Goujon, D.; Gritti, D.; Perruchoud, Gérald

doi:10.1109/freq.2007.4319150

Cited by 3 publications

(1 citation statement)

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“…According to the previous calculation, the total inspiratory Q A of service hydrogen maser is 0.5 MPa L for 10 years. In order to prevent the getter material from embrittle, it is necessary to retain a certain amount of allowance for use [18]. Meanwhile, for maintaining the required vacuum state, the vacuum pumping rate should be faster than 164 L/s, and the effective area of the getter should be larger than 1.16 × 10 5 mm 2 .…”

Section: Performance Design Of Getter Pumpmentioning

confidence: 99%

Design of a vacuum system for space active hydrogen maser

Que

et al. 2022

Front. Phys.

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With the high precision and stability of its frequency signal outputs, active hydrogen maser plays an important role in such fields as timing, satellite navigation, and communication. However, it needs to be lighter so as to be applied in space. We made a research, based on the calculation of the hydrogen flow and the adsorption efficiency of the adsorption unit, on the parameters of the vacuum system and the structural requirements, and designed a combined vacuum pump for the Space Active Hydrogen Maser (SAHM). This vacuum pump consists of a getter pump and a small ion pump, the total mass of which is about 5 kg. The pumping speed will be about 474 L/s by computation, when an amount, 2.5 MPa L, of hydrogen has been adsorbed by getters. Theoretically, the total source hydrogen inflow in lifetime is not higher than 20% of the total capacity getter pump, thus the design should amply meet the requirements of the SAHM vacuum system, and is of great significance for future SAHM applications.

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Section: Performance Design Of Getter Pumpmentioning

confidence: 99%