Difference between revisions of "PMT vs magnetic field paper"
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'''Back to [[Camera_Papers|Camera paper page]]''' <br> | '''Back to [[Camera_Papers|Camera paper page]]''' <br> | ||
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| + | == Outline of the project == | ||
| + | |||
| + | * Purpose: Evaluation and understanding of effect of magnetic field on the PMTs of CTA LST-1 | ||
| + | * Onsite test | ||
| + | ::- Effect of geomagnetic field was examined by calibrating the camera at different pointing directions. | ||
| + | ::- 0.5% change in PMT gain depending on x-component of geomagnetic field was seen | ||
| + | ::- No problem in terms of the telescope performance | ||
| + | * Investigation at lab | ||
| + | ::- In order to confirm that the result of the onsite test can be explained by the geomagnetic field, measurement is performed at lab. | ||
| + | ::- Multi p.e. signal shows small dependence even with weak magnetic field close to geomagnetic field. | ||
| + | ::- Single p.e. signal indicates positive correlation between gain and magnetic field, which is qualitatively consistent with the LST-1 result. | ||
| + | ::- Results obtained with the F-factor method indicates the dependence seen in the onsite test is indeed likely to be due to effects of the geomagnetic field. | ||
== People involved == | == People involved == | ||
Latest revision as of 08:51, 14 April 2022
Back to Main page
Back to Camera paper page
Contents
Outline of the project[edit]
- Purpose: Evaluation and understanding of effect of magnetic field on the PMTs of CTA LST-1
- Onsite test
- - Effect of geomagnetic field was examined by calibrating the camera at different pointing directions.
- - 0.5% change in PMT gain depending on x-component of geomagnetic field was seen
- - No problem in terms of the telescope performance
- Investigation at lab
- - In order to confirm that the result of the onsite test can be explained by the geomagnetic field, measurement is performed at lab.
- - Multi p.e. signal shows small dependence even with weak magnetic field close to geomagnetic field.
- - Single p.e. signal indicates positive correlation between gain and magnetic field, which is qualitatively consistent with the LST-1 result.
- - Results obtained with the F-factor method indicates the dependence seen in the onsite test is indeed likely to be due to effects of the geomagnetic field.
People involved[edit]
- Y. Kobayashi
- D. Tateishi
- Y. Sunada
- T. Saito
Index and contents[edit]
- Introduction
- The onsite test
- - Introduction to the LST-1 camera
- - Method
- - Results
- - Discussion
- Measurement at laboratory
- - Measurement setup
- - Calibration of the Magnetic field
- - Data acquisition and analysis
- - Results
- - Discussion
- Discussion
- Conclusions
