Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1
Heater Control and Plasma Optimization Matthew Bohman ALPHA Collaboration University of Michigan Semester at CERN 1.
Dec 14, 2015
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1
Heater Control and Plasma Optimization
Matthew Bohman
ALPHA Collaboration
University of Michigan Semester at CERN
2
Bakeout and Heater Control
3
Heater Control Schematic
PC TCP Server
Ethernet to Serial Adapter
Heater Controller
Heater
4
New System
PC
Heater Controlle
r
Heater
Serial Data
Current
5
Plasma Optimization
6
Three Body Recombination
Anti-Hydrogen Formation
Radiative Recombination
Small, dense, and cold plasmas will maximize anti-hydrogen formation rates
7
Formation Rates
8
Rotating Wall
9
Uncompressed Plasmas
10
Partially Compressed, Centrifugally Separated
11
Fully Compressed Plasmas
12
Cooling
13
Evaporative and Sympathetic Cooling
14
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
15
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
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