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AMS-02 Magnetic Field Measurement. Prof. Chin E. Lin, NCKU, TNN TIM Jan. 09, 2007. AMS-02 Magnetic Field. AMS-02 magnetic field measurement to identify the interior magnetic field by a servo system in planar scanning The exterior magnetic field is only identified by some specified locations.
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AMS-02 Magnetic Field Measurement Prof. Chin E. Lin, NCKU, TNN TIM Jan. 09, 2007
AMS-02 Magnetic Field • AMS-02 magnetic field measurement to identify the interior magnetic field by a servo system in planar scanning • The exterior magnetic field is only identified by some specified locations
Fixture Tests • We use wooden mock-up to carry on our calibration test and field measurement test at NCKU
Fixture on AMS-01 Sensor in position
Fixture on AMS-01 Sensor position calibration Hall Sensor Hall Sensor
Magnetic Field Sensor • We use a SYPRIS Co. F. W. BELL Model 7030 Gauss/Tesla Meter, with 3D probe for 300 k Gauss(30 Tesla)in 1 m Gauss(0.1 μ Tesla)resolution
Origin Calibration • Use laser pointer on both X and Y axes to project an intersection to identify as its origin of probe scanning
Origin Calibration • Laser positioning calibration
Field Mapping • AMS-02 magnetic field mapping will run a little more than one quarter of the overall interior volume, assuming the field distribution is x- and y- symmetrical. • Initially, we need to identify the symmetry by a few symmetrical locations • The servo system is controlled to run only one quarter. Otherwise, we have to do full plane mapping.
Where to Mount • On the original design, we found from the four mounting holes to use. • However, currently, the temp O-ring has four seal attachments using the same mounting holes. • Can they be shifted ?
Considering O-Ring • We reduce the planar size to consider the temporary O-ring. The scanning distance is 80 mm less in diameter. • The scanning control software is adjustable to fit for O-ring.
Measurement in SCL • We try to finish the AMS-02 interior field measurement within 7 days • We need to prepare 1-2 days before mounting on to AMS-02 • The fixture is about 500 lbs. We need help by a crane to lift it up.
Fixture Shipping • The measurement fixture shipping to Oxford takes 6-8 weeks. • We will be ready anytime from today.
Fixture on AMS-01 Tests • We have used the measurement fixture to finish AMS-01 magnetic field measurement.
AMS-01 Data in Memory • Data acquisition from measurement system and store into database
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Exterior Measurement • Due to CSIST site constraint where AMS01 is located, we can only measure half spherical for less than 2 meters outside the main body • From an axis, locating at 120 degree, to both side with each step of 15 degree, at 1 meter and 1.5 meter from top to down
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