Technical Design Report Super Fragment Separator

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DRAFT o A liquefaction power of 5 g/s liquid helium is required for cooling the current leads. • Transfer lines o To supply the magnet feedboxes with helium @ 4K, 3 m flexible, vacuum insulated, double coaxial lines for forward and return flow are necessary for each feed box. o To supply shield cooling @ 50K, two 3 m flexible, vacuum insulated, single coaxial lines are necessary for each feed box, and o a fixed multiple distribution line • Feedboxes – each box contains the following components: Power Converters o support for an anti-cryostat o cold Coriolis mass flow meters (max. 5g/s for SIS100; max. 200g/s for SIS300) o current leads for main magnets and correctors o helium supply (forward and return) o 4 temperature and 4 pressure sensors o temperature control units for the current leads and for the anti-cryostat o The feedboxes for the SIS100-type magnets have to be equipped with a Joule-Thomson expansion valve to produce two-phase helium. For magnetic measurements of Super-FRS dipole and multiplet magnets a switch mode power converter with a rated load current of 1000A and a maximum load voltage of 400V will be installed. These will have to provide a current stablity of better than 10 -4 . A switch mode power converter with a rated load current of 500A and a maximum load voltage of 400V will be foreseen to measure Super-FRS correctors. Quench Detection and Magnet Protection Although most single magnets (except SIS300 dipole and quadrupole) are self-protecting, a protection system allows minimizing the recovery time (necessary for cool down) after a quench occurred due to the possibility of energy extraction. The voltage taps are isolated wires soldered to the magnet cable. Voltage differences between two symmetric coil parts of the magnet are measured. In addition an unbalanced current through a centre tap is measured. The scheme of functionality is shown in Figure 2.4.162. The main components are the separated voltage detection, the security matrix for safety actions and triggering the data acquisition, and a data acquisition system for storage. The security matrix triggers the following safety actions: • switch off the power converter which will switch a dump resistor into the coil circuit for energy extraction • open the active quench valve in the feedbox • activate the quench heaters for magnets, if applicable (6 quadrupoles) The planned test facility is based on the setup of a Prototype Test Facility which is ready for operation since 2006 [118]. Due to large number of magnets a fully automated operation of the whole test facility is necessary to achieve the required throughput. 206
DRAFT Figure 2.4.162: Scheme of the functionality of the series test facility for superconducting magnets. The blue parts show cooling sources. Security related devices and communication channels are given in red. Arrows show the flow of various signals. On the left the cryogenic supply, cooling water and electrical power supply are shown. The power supply provides a safety interlock, a dump resistor and its control unit. The feedbox is equipped with various equipments: current leads, quench valves, mass flow meters, and helium pressure sensors. The isolation vacuum of the cryostat is monitored. The magnet is equipped with temperature sensors and displacement sensors. Voltage taps allow supervising the voltage drop on the magnet coils. Dedicated electronics treat the signal of these taps and generates triggers in case a quench has occurred (security matrix). These triggers shut down the power supply, open the quench valves and fire the magnet's quench heaters (only in case of SIS 300 magnets). The data acquisition systems allow studying the origin of the quench. Loss measurements are performed using digital volt meters. Abbreviations: DAQ: data acquisition, HF: high frequency, LF: low frequency. 2.4.A5.3.4 String Tests There will be no string test for the Super-FRS. 2.4.A5.3.5 Schedule The previous sections listed the different tasks and the various devices to conduct the different measurements. Table 2.4.48 lists the number of magnets per type and summarizes them for the various stages. 207
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DRAFT Technical Design Report Super
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Preface DRAFT The International Fac
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Contents DRAFT 2.4.1 System Design
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DRAFT Table 2.4.1: Parameters of th
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DRAFT degrader stage which provides
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Pre-Separator DRAFT In order to acc
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DRAFT coupling coefficients is give
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DRAFT Table 2.4.3: First-order matr
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DRAFT Main-Separator to the high-en
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DRAFT Table 2.4.5: Transmission T o
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DRAFT Figure 2.4.15: Resolution nec
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DRAFT Figure 2.4.17: Spectrometer m
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DRAFT Table 2.4.8: Design parameter
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DRAFT Figure 2.4.20: Side view of t
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DRAFT Figure 2.4.23: Coil cross-sec
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DRAFT Figure 2.4.25: Flux density d
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Figure 2.4.29: Assembly of two half
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DRAFT Figure 2.4.31: Cross section
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Figure 2.4.34: Sketch of the therma
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DRAFT To fulfill the required field
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DRAFT Figure 2.4.39: The 3D model o
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DRAFT Pole radius mm 100 210 250 25
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DRAFT Figure 2.4.43: Front, side, a
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∆B/B 0.0 DRAFT Figure 2.4.46: Ave
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DRAFT Figure 2.4.50: 3D model of th
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DRAFT Figure 2.4.54 and Table 2.4.1
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DRAFT 2.4.2.3.1 Radiation resistant
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DRAFT The water-cooled radiator con
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DRAFT Table 2.4.17: Coil parameters
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DRAFT Figure 2.4.63: Field distribu
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DRAFT Figure 2.4.65: Multiplet conf
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DRAFT Table 2.4.21 summarizes the r
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2.4.2.6 Current Leads DRAFT The cur
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DRAFT Table 2.4.23 presents the lis
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2.4.3 Power Converters DRAFT The po
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SCR structure DRAFT Regarding high
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a) Chopper circuit 3x400V b) Half b
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External Control System Data transf
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DRAFT Figure 2.4.77: Arrangement of
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SuperFRS Power Supply Effective App
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DRAFT The locations for the differe
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DRAFT Figure 2.4.80: Beam induced f
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DRAFT Figure 2.4.82: Two hybrids ca
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DRAFT Figure 2.4.84: Left panel: TP
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DRAFT extracted beams. Its use for
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Time of Flight measurement DRAFT At
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DRAFT together. Another option is t
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DRAFT Figure 2.4.88: Pillow seal po
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DRAFT Figure 2.4.90: Setup at the m
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DRAFT An overview of the total vacu
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2.4.7.4 Appendix - Technical Drawin
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DRAFT Figure 2.4.96: Diagnostic cha
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DRAFT Figure 2.4.98: Diagnostic cha
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DRAFT Figure 2.4.100: Diagnostic ch
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2.4.8 Particles Sources n/a 2.4.9 E
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DRAFT movable, but BC3 must be able
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DRAFT Figure 2.4.106: Spot size of
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dE/dV [kJ/cm 3 ] 3 2 1 DRAFT includ
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2.4.11.1.4 Design of the beam catch
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DRAFT Figure 2.4.110: Calculated eq
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DRAFT Figure 2.4.112: Location of b
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DRAFT the carbon. Again mainly 7 Be
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DRAFT maintenance of the carbon or
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DRAFT material) and received the an
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DRAFT commissioned in February 2005
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DRAFT Table 2.4.28: Typical beam pa
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DRAFT Figure 2.4.120: Surface tempe
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DRAFT Figure 2.4.123: Schematic lay
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DRAFT These results show that the i
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DRAFT Like in the case of the rotat
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DRAFT Figure 2.4.126: Left: Schemat
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DRAFT Figure 2.4.128: Schematic lay
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DRAFT Figure 2.4.129: Flow scheme o
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DRAFT Since the weight of the cold
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DRAFT With the cooling capacity spe
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DRAFT Figure 2.4.134: Schematic of
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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: DRAFT Figure 2.4.161: Schematic vie
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,
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