- Page 1 and 2: Thesis for the degree of Doctor of
- Page 3: Multipactor in Low Pressure Gas and
- Page 6 and 7: Conference contributions by the aut
- Page 8 and 9: viii
- Page 10 and 11: 3.2.4 Key findings . . . . . . . .
- Page 12 and 13: xii
- Page 14 and 15: xiv
- Page 16 and 17: addition, it is difficult to make c
- Page 18 and 19: numerical study of the phenomenon i
- Page 20 and 21: to physically damage microwave comp
- Page 22 and 23: odd positive integer (N = 1,3,5...)
- Page 24 and 25: σ se [−] 2.5 2 1.5 1 0.5 W 1 W m
- Page 26 and 27: Voltage [V] 10 4 10 3 10 2 10 0 N=1
- Page 28 and 29: even though it may be sufficient fr
- Page 30 and 31: where φL and φR are the left and
- Page 32 and 33: (cf. Fig. 2.7). When taking the env
- Page 34 and 35: 2.1.4 Methods of suppression Many o
- Page 36 and 37: Noise (dBm) Power #1 (dBm) Match #1
- Page 38 and 39: andom spread in emission velocities
- Page 42 and 43: where kn is a factor determining th
- Page 44 and 45: allows for another design margin, w
- Page 46 and 47: Boundary function Method One of the
- Page 48 and 49: carriers, because the NLSQ method r
- Page 50 and 51: multipactor discharge. Using a Mont
- Page 52 and 53: the assumption of a constant ratio
- Page 54 and 55: Voltage (V) 10 3 10 2 10 1 10 −2
- Page 56 and 57: 3.1.3 Main results The main result
- Page 58 and 59: lytical model is obviously needed.
- Page 60 and 61: where 〈vt 2 〉 represents the av
- Page 62 and 63: these quantities in the range from
- Page 64 and 65: analytical. Attempts were made to f
- Page 66 and 67: only model, the inclusion of ionisa
- Page 68 and 69: Normalised Voltage 1.1 1.05 1 0.95
- Page 70 and 71: Voltage [V] 10 3 10 0 µ=0 µ=0.75
- Page 73 and 74: Chapter 4 Multipactor in irises A c
- Page 75 and 76: h l Figure 4.1: The geometry used i
- Page 77 and 78: N e /N 0 [−] 3 2.5 2 1.5 1 Multip
- Page 79 and 80: to compensate for electron losses i
- Page 81: 4.4 Main results This analysis has
- Page 84 and 85: support for the qualitative analyti
- Page 86 and 87: where R(t) is the average position,
- Page 88 and 89: where d stands for the gap width, V
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there are different oscillatory vel
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Phase [degrees] 60 50 40 30 20 10
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G 100 90 80 70 60 50 40 30 20 10 0
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possible for quite large Ro/Ri-valu
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upper right region of the figures,
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σse,max the zones become wider and
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G 50 45 40 35 30 25 20 15 10 5 0.2
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creasing ratio Ri/Ro was observed.
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Chapter 6 Detection of multipactor
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Amplitude of acceleration [Gm/s 2 ]
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tipactor events that are short-live
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software and the time evolution of
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ditional test sample, a resonant ca
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the FFT. It was concluded that ther
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6.2.1 Single carrier When using the
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Reference signal generator Phase co
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Amplitude [A.U.] 2.5 2 1.5 1 0.5 De
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Chapter 7 Conclusions and outlook T
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tioned there were multipactor in no
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References [1] W. Henneberg, R. Ort
- Page 131 and 132:
[27] A. Ruiz et al, “Ti, V, and C
- Page 133 and 134:
[51] D. Wolk, D. Schmitt, and T. Sc
- Page 135 and 136:
[75] R. Udiljak, Multipactor in low
- Page 137:
Included papers A-F 123
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Paper B R. Udiljak, D. Anderson, M.
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Paper D R. Udiljak, D. Anderson, M.
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Paper F V. E. Semenov, N. Zharova,