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The 5A-axis closed-loop cryogenic sample holder provided by Fermion Instruments can achieve precise control of sample position and posture. It is mainly composed of four parts: cryogenic sample rod, temperature control system, XYZ-R1 translation stage, and motor control system. The entire sample holder and translation stage are made of non-magnetic materials and can be used under ultra-high vacuum. The sample stage can move over a large range in the X, Y, and Z directions, and can achieve rotational movement around the Z axis (R1). A gear transmission mechanism is added to the head of the sample holder to achieve the function of internal angle rotation of the sample table (R3). The motor control software can be linked with the ScientaOmicron analyzer to achieve the automapping function.
| ● Low operating cost: Adopt air (water) cooled GM refrigerator to provide cooling capacity; | ● Multiple degrees of freedom: X, Y, Z, R1, R3 can all realize motor control; | ● Convenient operation: Plug and play, can run stably for a long time; |
| ● Ultra-low temperature: The minimum stability of the sample stage can reach 5K; | ● Accurate temperature control: The PID temperature control accuracy can reach 10mK; | ● Rapid temperature change: From room temperature to 5K, less than 4 hours; |
| R1 axial rotation | 360° (-180°, +180°) |
| R3 in-plane angular rotation | 240° (-120°, +120°) |
| X/Y travel | 25mm (±12.5mm) |
| Z itinerary | Maximum 650mm |
| 4-Axis | 5A-Axis | 5F-Axis | 5.5-Axis | 6-Axis | ||
| XY travel | ±12.5mm | ±12.5mm | ±12.5mm | ±12.5mm | ±12.5mm | ±12.5mm |
| Z travel | Up to 700mm | Up to 700mm | Up to 700mm | Up to 700mm | Up to 700mm | |
| XYZ drive | Manual/motor | Manual/motor | Manual/motor | Manual/motor | Manual/motor | |
| XYZ accuracy | ＜0.01mm | ＜0.01mm | <0.01mm | <0.01mm | <0.01mm | |
| R1 Scope | 360° (-180°, +180°) | 360° (-180°, +180°) | 360° (-180°, +180°) | 360° (-180°, +180°) | 360° (-180°, +180°) | |
| R1 control mode | Manual/motor | Manual/motor | Manual/motor | Manual/motor | Manual/motor | |
| R1 control accuracy | ＜0.1° | <0.1° | <0.1° | <0.1° | <0.1° | |
| R1 reduction ratio | 360:0.2 | 360:0.2 | 360:0.2 | 360:0.2 | 360:0.2 | |
| R2 (Flip) Range | —— | —— | 60° (-15°, + 45°） | 60°（-15°，+45°） | 60°（-15°，+45°） | |
| R2 driver | —— | —— | Motor | Manual/Motor | Manual/Motor | |
| R2 accuracy | —— | —— | ＜0.1° | ＜1° | ＜0.1° | |
| R2 reduction ratio | —— | —— | 360:9 | 360:6 | 360:3 | |
| R3 (Azi) Scope | —— | 240° (-120°, +120°) | —— | 240° (-120°, +120°) | 240° (-120°, +120°) | |
| R3 driver | —— | Manual/Motor | —— | Manual | Manual/Motor | |
| R3 accuracy | —— | ＜0.1° | —— | Manual ＜1° | ＜0.1° | |
| R3 reduction ratio | —— | 360:5 | —— | 360:4.5 | 360:4 | |
| Temperature range | <4-325K | <5-325K | <5-325K | <6-325K | <6-325K | |
| Minimum temperature | <4K | <5K | <5K | <6K | ＜6K | |
| Control accuracy | ＜0.01K | ＜0.01K | ＜0.01K | ＜0.01K | ＜0.01K | |
| Cooling time | ＜3 Hour (RT-6K) | ＜4 Hour (RT-6K) | ＜4 Hour (RT-6K) | ＜5 Hour (RT-6K) | ＜6 Hour (RT-6K) |
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