Technical Design Report Super Fragment Separator

More documents

Recommendations

Info

DRAFT Crucial for the layout of the beam catcher is the spot size of the primary beam which determines the maximum temperature. The two different extraction modes will be treated separately. At first we concentrate on the fast extraction as in this case no thermal conduction can distribute the heat and the danger of damaging or even melting the catcher is much higher. The fast extracted primary beam is characterized by a much larger phase space volume (see section 2.4.1), which results in favourable large beam spots at the catcher. For the fast extraction mode with σp/p = 0.25 % but still keeping a small spot size of (1x2) mm 2 (1-σ) on the target and the same case as in Figure 2.4.104 the calculated projections of the beam size in horizontal (x) and vertical direction (y) are shown in Figure 2.4.105. Figure 2.4.105: Spot size of the uranium primary beam on the beam catcher BC3 at PF1 in horizontal (left) and vertical (right) direction in fast extraction mode. The peaks are projections of the distributions in Figure 2.4.104. A beam dumped at an earlier stage in the Pre-<strong>Separator</strong> has less dispersion, but this is compensated by less focusing and thus results in a similar spot size. In general, the spot size in the fast extraction regime can never become less than 1.0 cm 2 defined as a 1-σ level. It is even larger as the spot size at the target must be also increased to ensure that the target survives. Starting with a spot size of (3x7) mm 2 (1-σ) at the target the resulting spot size on all three catchers is given in Figure 2.4.106 as function of the mean position where the primary beam may hit. 112
DRAFT Figure 2.4.106: Spot size of a uranium primary beam in horizontal (x, upper panel) and vertical direction(y, lower panel) as a function of mean position x on the catcher. Depending on the relative difference in magnetic rigidity different beam catchers behind the first (BC1), the second (BC2) or the third dipole (BC3) are hit. The simulation is for a beam in fast extraction mode with enlarged spot size of 3mm x 8mm (sigma) on a 4 g/cm 2 Li-target. For slow extraction the initial emittance is much smaller but the nuclear and atomic interactions in the target still broaden the beam, resulting in a spot between 0.25 and 0.5 cm 2 at the beam catchers. 2.4.11.1.3 Choice of beam catcher material As already discussed the beam catcher serves two purposes, energy absorption and shielding, which require the use two different kinds of material. In the first part of the beam catcher, material with a low specific heat and low thermal expansion to avoid problems of melting and high pressure will be applied. In the second part material of higher density and Z will be used to achieve efficient 113
Page 1 and 2:
DRAFT Technical Design Report Super
Page 3 and 4:
Preface DRAFT The International Fac
Page 5 and 6:
Contents DRAFT 2.4.1 System Design
Page 7 and 8:
DRAFT Table 2.4.1: Parameters of th
Page 9 and 10:
DRAFT degrader stage which provides
Page 11 and 12:
Pre-Separator DRAFT In order to acc
Page 13 and 14:
DRAFT coupling coefficients is give
Page 15 and 16:
DRAFT Table 2.4.3: First-order matr
Page 17 and 18:
DRAFT Main-Separator to the high-en
Page 19 and 20:
DRAFT Table 2.4.5: Transmission T o
Page 21 and 22:
DRAFT Figure 2.4.15: Resolution nec
Page 23 and 24:
DRAFT Figure 2.4.17: Spectrometer m
Page 25 and 26:
DRAFT Table 2.4.8: Design parameter
Page 27 and 28:
DRAFT Figure 2.4.20: Side view of t
Page 29 and 30:
DRAFT Figure 2.4.23: Coil cross-sec
Page 31 and 32:
DRAFT Figure 2.4.25: Flux density d
Page 33 and 34:
Figure 2.4.29: Assembly of two half
Page 35 and 36:
DRAFT Figure 2.4.31: Cross section
Page 37 and 38:
Figure 2.4.34: Sketch of the therma
Page 39 and 40:
DRAFT To fulfill the required field
Page 41 and 42:
DRAFT Figure 2.4.39: The 3D model o
Page 43 and 44:
DRAFT Pole radius mm 100 210 250 25
Page 45 and 46:
DRAFT Figure 2.4.43: Front, side, a
Page 47 and 48:
∆B/B 0.0 DRAFT Figure 2.4.46: Ave
Page 49 and 50:
DRAFT Figure 2.4.50: 3D model of th
Page 51 and 52:
DRAFT Figure 2.4.54 and Table 2.4.1
Page 53 and 54:
DRAFT 2.4.2.3.1 Radiation resistant
Page 55 and 56:
DRAFT The water-cooled radiator con
Page 57 and 58:
DRAFT Table 2.4.17: Coil parameters
Page 59 and 60:
DRAFT Figure 2.4.63: Field distribu
Page 61 and 62: DRAFT Figure 2.4.65: Multiplet conf
Page 63 and 64: DRAFT Table 2.4.21 summarizes the r
Page 65 and 66: 2.4.2.6 Current Leads DRAFT The cur
Page 67 and 68: DRAFT Table 2.4.23 presents the lis
Page 69 and 70: 2.4.3 Power Converters DRAFT The po
Page 71 and 72: SCR structure DRAFT Regarding high
Page 73 and 74: a) Chopper circuit 3x400V b) Half b
Page 75 and 76: External Control System Data transf
Page 77 and 78: DRAFT Figure 2.4.77: Arrangement of
Page 79 and 80: SuperFRS Power Supply Effective App
Page 81 and 82: DRAFT The locations for the differe
Page 83 and 84: DRAFT Figure 2.4.80: Beam induced f
Page 85 and 86: DRAFT Figure 2.4.82: Two hybrids ca
Page 87 and 88: DRAFT Figure 2.4.84: Left panel: TP
Page 89 and 90: DRAFT extracted beams. Its use for
Page 91 and 92: Time of Flight measurement DRAFT At
Page 93 and 94: DRAFT together. Another option is t
Page 95 and 96: DRAFT Figure 2.4.88: Pillow seal po
Page 97 and 98: DRAFT Figure 2.4.90: Setup at the m
Page 99 and 100: DRAFT An overview of the total vacu
Page 101 and 102: 2.4.7.4 Appendix - Technical Drawin
Page 103 and 104: DRAFT Figure 2.4.96: Diagnostic cha
Page 105 and 106: DRAFT Figure 2.4.98: Diagnostic cha
Page 107 and 108: DRAFT Figure 2.4.100: Diagnostic ch
Page 109 and 110: 2.4.8 Particles Sources n/a 2.4.9 E
Page 111: DRAFT movable, but BC3 must be able
Page 115 and 116: dE/dV [kJ/cm 3 ] 3 2 1 DRAFT includ
Page 117 and 118: 2.4.11.1.4 Design of the beam catch
Page 119 and 120: DRAFT Figure 2.4.110: Calculated eq
Page 121 and 122: DRAFT Figure 2.4.112: Location of b
Page 123 and 124: DRAFT the carbon. Again mainly 7 Be
Page 125 and 126: DRAFT maintenance of the carbon or
Page 127 and 128: DRAFT material) and received the an
Page 129 and 130: DRAFT commissioned in February 2005
Page 131 and 132: DRAFT Table 2.4.28: Typical beam pa
Page 133 and 134: DRAFT Figure 2.4.120: Surface tempe
Page 135 and 136: DRAFT Figure 2.4.123: Schematic lay
Page 137 and 138: DRAFT These results show that the i
Page 139 and 140: DRAFT Like in the case of the rotat
Page 141 and 142: DRAFT Figure 2.4.126: Left: Schemat
Page 143 and 144: DRAFT Figure 2.4.128: Schematic lay
Page 145 and 146: DRAFT Figure 2.4.129: Flow scheme o
Page 147 and 148: DRAFT Since the weight of the cold
Page 149 and 150: DRAFT With the cooling capacity spe
Page 151 and 152: DRAFT Figure 2.4.134: Schematic of
Page 153 and 154: S1 (a) Figure 2.4.136: (a) Zoom of
Page 155 and 156: 2.4.A Appendix DRAFT The appendix o
Page 157 and 158: DRAFT experiment the EXL community
Page 159 and 160: 2.4.A1.3 Slow control and monitorin
Page 161 and 162: DRAFT Figure 2.4.139: Architecture
Page 163 and 164:
DRAFT all FAIR accelerators will be
Page 165 and 166:
DRAFT source tier are split in two
Page 167 and 168:
DRAFT coupled from the ACS which is
Page 169 and 170:
DRAFT 2.4.A3.2 Work packages: descr
Page 171 and 172:
2.4.A3.2.4 Instrumentation Measurin
Page 173 and 174:
DRAFT this, planning a network layo
Page 175 and 176:
DRAFT 2.4.A3.3 Machine characterist
Page 177 and 178:
DRAFT installation of RALF was done
Page 179 and 180:
DRAFT The double ring synchrotrons,
Page 181 and 182:
DRAFT The first refrigerator, Cryo1
Page 183 and 184:
DRAFT shield 28874 + 25 g/s 22 bar
Page 185 and 186:
LHe storage Helium storage Helium s
Page 187 and 188:
Cryo2 Cryo3 CryoST DB 3 DRAFT Compr
Page 189 and 190:
DRAFT The cold connection will be m
Page 191 and 192:
DRAFT Measurements planned for each
Page 193 and 194:
DRAFT For magnets with less stringe
Page 195 and 196:
DRAFT The value, parameters, condit
Page 197 and 198:
DRAFT 3. Geometry tests For cryosta
Page 199 and 200:
DRAFT The Quench Heaters Tests has
Page 201 and 202:
DRAFT Figure 2.4.159: Photograph of
Page 203 and 204:
DRAFT The field properties listed i
Page 205 and 206:
DRAFT Figure 2.4.161: Schematic vie
Page 207 and 208:
DRAFT Figure 2.4.162: Scheme of the
Page 209 and 210:
2.4.A6.2.2 Shielding against direct
Page 211 and 212:
DRAFT Figure 2.4.164: Schematic lay
Page 213 and 214:
DRAFT Figure 2.4.165: An iron beam
Page 215 and 216:
DRAFT In a side view the flux of pr
Page 217 and 218:
DRAFT catcher 7 Be, 22 Na and 24 Na
Page 219 and 220:
DRAFT at the FRS (2·10 9 /spill as
Page 221 and 222:
DRAFT [1] H. Geissel et al., Nucl.
Page 223 and 224:
DRAFT [74] A. Fabich and J. Lettry,
show all

Technical Design Report Super Fragment Separator

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?