Theory, Design and Tests on a Prototype Module of a Compact ...

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90 5. RADIOFREQUENCY MEASUREMENT Figure 5.20. A bead pulling with the field level flat within ±2.85%. Figure 5.21. The final bead pulling with the field level flat within ±2.5%. 2997.075 MHz <strong>and</strong> the SBB = +160 kHz. After some interventions on the tanks #2 <strong>and</strong> #3, the bead pulling was the one of figure 5.20 which was flat within ±2.85%. The π/2 frequency was 2997.080 MHz <strong>and</strong> the SBB = +145 kHz. The final result is shown in figure 5.21 with the tuners positions shown in table 5.3. The π/2 frequency was 2997.025 MHz <strong>and</strong> it took into account the effect of temperature <strong>and</strong> of the nylon wire stretched along the axis. The bump stop-b<strong>and</strong> was SBB = +212 kHz. 6.1. Rejection to the disturbs. When a Side Coupled Linac is well tuned, namely the field level is flat <strong>and</strong> the stop-b<strong>and</strong>s are little, the structure is able to reject disturbs. This means that, starting from
6. THE FINAL STEPS OF THE TUNING PROCEDURE 91 tank # cell type left [mm] right [mm] 1 AC +4.5 +6.6 CC +1.2 +6.4 2 AC +6.2 +6.8 CC +1.2 +6.4 3 AC +5.9 +4.4 CC +1.2 +6.4 4 AC +2.0 +4.6 CC +1.2 +6.4 Table 5.3. The final tuners positions. such a condition, a local error does not change significantly the flatness of field <strong>and</strong> the π/2 frequency. The figure 5.22 shows four cases of Figure 5.22. The effect of perturbations a) in the end cell, b) in 6 CCs (two for tank), c) in 2 ACs in tank #2, d) in all the ACs of tank #3. perturbation on the structure. In the case a) a magnetic loop was introduced in the end cell of the fourth tank <strong>and</strong> this implied a shift of the resonant frequency of 40 kHz. In the case b) the tuners of two CCs for the tanks #1,#3 <strong>and</strong> #4 were brought out of 0.3 mm. In the case c) the tuners of two ACs of tank #2 were completely brought out <strong>and</strong>, at last, in the case d) the tuners of seven ACs of tank #3 were brought out of 0.4 mm <strong>and</strong> the tuners of six ACs of tank #3 were pushed inside of 0.4 mm.
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UNIVERSITÀ DEGLI STUDI DI NAPOLI F
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ii CONTENTS List of Figures 105 Ack
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iv INTRODUCTION In the state of art
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2 1. INTRODUCTION TO THE HADRONTHER
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8 2. LINAC AND SCL ACCELERATORS par
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10 2. LINAC AND SCL ACCELERATORS wh
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12 2. LINAC AND SCL ACCELERATORS at
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14 2. LINAC AND SCL ACCELERATORS 2.
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16 2. LINAC AND SCL ACCELERATORS f
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18 2. LINAC AND SCL ACCELERATORS Fi
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20 2. LINAC AND SCL ACCELERATORS re
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CHAPTER 3 Design T
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1. GLOBAL PARAMETERS OF THE ACCELER
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2. ANALYSIS OF COUPLED CAVITIES 27
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3. SINGLE CAVITY DESIGN 29 Spice ha
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20mA 15mA 10mA 5mA 3. SINGLE CAVITY
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3. SINGLE CAVITY DESIGN 33 • HFSS
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4. BRIDGE COUPLERS DESIGN 35 4. Bri
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5. COUPLING BETWEEN WAVEGUIDE AND B
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Page 52 and 53: 46 4. CIRCUIT MODEL where the matri
Page 54 and 55: 48 4. CIRCUIT MODEL For the latest
Page 56 and 57: 50 4. CIRCUIT MODEL left side of th
Page 58 and 59: 52 4. CIRCUIT MODEL and</st
Page 60 and 61: 54 4. CIRCUIT MODEL Under this hypo
Page 62 and 63: 56 4. CIRCUIT MODEL matrix of the w
Page 64 and 65: 58 4. CIRCUIT MODEL For the derivat
Page 66 and 67: 60 4. CIRCUIT MODEL Remembering the
Page 68 and 69: 62 4. CIRCUIT MODEL the bars is pro
Page 70 and 71: 64 4. CIRCUIT MODEL is unitary, one
Page 72 and 73: 66 4. CIRCUIT MODEL 120 100 80 60 4
Page 74 and 75: 68 5. RADIOFREQUENCY MEASUREMENT Ri
Page 76 and 77: 70 5. RADIOFREQUENCY MEASUREMENT Fi
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Page 82 and 83: 76 5. RADIOFREQUENCY MEASUREMENT In
Page 84 and 85: 78 5. RADIOFREQUENCY MEASUREMENT me
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Page 105 and 106: Conclusions and Ou
Page 107: CONCLUSIONS AND OUTLOOK 101 Finally
Page 110 and 111: 104 BIBLIOGRAPHY [23] U. Amaldi, B.
Page 112 and 113: 106 LIST OF FIGURES 2.12 Drawing of
Page 114 and 115: 108 LIST OF FIGURES methods, in add
Page 116: 110 ACKNOWLEDGEMENTS Naples, Italy
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