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Transcript of Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan...
![Page 1: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/1.jpg)
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Heater Control and Plasma Optimization
Matthew Bohman
ALPHA Collaboration
University of Michigan Semester at CERN
![Page 2: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/2.jpg)
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Bakeout and Heater Control
![Page 3: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/3.jpg)
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Heater Control Schematic
PC TCP Server
Ethernet to Serial Adapter
Heater Controller
Heater
![Page 4: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/4.jpg)
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New System
PC
Heater Controlle
r
Heater
Serial Data
Current
![Page 5: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/5.jpg)
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Plasma Optimization
![Page 6: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/6.jpg)
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Three Body Recombination
Anti-Hydrogen Formation
Radiative Recombination
Small, dense, and cold plasmas will maximize anti-hydrogen formation rates
![Page 7: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/7.jpg)
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Formation Rates
![Page 8: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/8.jpg)
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Rotating Wall
![Page 9: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/9.jpg)
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Uncompressed Plasmas
![Page 10: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/10.jpg)
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Partially Compressed, Centrifugally Separated
![Page 11: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/11.jpg)
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Fully Compressed Plasmas
![Page 12: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/12.jpg)
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Cooling
![Page 13: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/13.jpg)
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Evaporative and Sympathetic Cooling
![Page 14: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/14.jpg)
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Evaporative Cooling
40 60 80 100 120 140 160 180 2000
50
100
150
200
250
300
350
400
450
500
EVC (%)
Tem
pera
ture
![Page 15: Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.](https://reader036.fdocuments.net/reader036/viewer/2022081519/56649c925503460f9494daa9/html5/thumbnails/15.jpg)
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Sources:Slide 6, 7, 8, 13: images and equations from
E. Butler, Antihydrogen formation, dynamics and trapping,
Ph. D. thesis, Swansea University (2011).
Slide 12: image from EUROfusion