Research Needs for Magnetic Fusion Energy Sciences - US Burning ...

More documents

Recommendations

Info

aCROnyMS anD abbREViatiOnS (continued) uSiPO Us iteR Project office —————————————————————————————————————————————— VDE vertical displacement event VnS volumetric neutron source VuV vacuum Ultraviolet —————————————————————————————————————————————— W tungsten W7-aS Wendelstein-7 advanced stellarator, a stellarator experiment in Germany W7-x Wendelstein-7X, a stellarator being built in Germany W-fuzz tungsten fuzz —————————————————————————————————————————————— ybCO yttrium barium copper oxide, a high-temperature superconductor material —————————————————————————————————————————————— z atomic number zeff effective atomic number, a measure of impurity content 394
aPPENdix B: WoRKSHoP ScHEduLE Monday, June 8 Tuesday, June 9 Wednesday, June 10 Thursday, June 11 Friday, June 12 8:30 AM Plenary (P): welcome and logistics 9:00 AM P: Dr. Dehmer: Perspectives from Office of Science P: Dr. Ed Synakowski, AD for Fusion: Context for ReNeW B: Thrust focus discussion. 3 parallel sessions: 4, 9, 7 9:30 AM Thrust 6 Thrust focus discussion: 5, 10, 18 395 P: Summary of thrust revisions 10:00 AM Break Break Break Break 10:30 AM P: Theme 1 Chapter summary and discussion (20 + 10) 11:00 AM P: Theme 2 Chapter summary and discussion 11:30 AM P: Theme 3 Chapter summary and discussion Thrust 7 Break P: Begin final discussions of Thrust content Thrust 8 Thrust focus discussion: 2, 11, 14 Thrust 9 12:00 PM Break Break Break Break Adjourn 12:30 PM Break Break Break Break 1:00 PM P: Theme 4 Chapter summary and discussion 1:30 PM P: Theme 5 Chapter summary and discussion 2:00 PM Breakout (B): Theme chapter improvements Thrust 10 Thrust focus discussion: 8, 1, 15 Thrust 11 2:30 PM Thrust 13 3:00 PM P: Thrust summary and discussion. 20 + 10 for each Thrust. Thrust 1 Thrust 12 Thrust focus discussion: 12, 3, 17 P: Continue thrust content finalization Thrust 14 Break P: Discuss executive summary 3:30 PM Break Break Thrust focus discussion: 16, 6, 13 4:00 PM Thrust 2 P: Continue thrust summary and discussion. Thrust 15 Break 4:30 PM Thrust 3 Thrust 16 Free time B: Writing chores 5:00 PM Thrust 4 Thrust 17 5:30 PM Thrust 5 Thrust 18 P: thrust discussion 6:00 PM Reception Excom meeting P: Wrap-up for OFES (all invited) Excom meets for wrap-up
Page 1 and 2:
Research Needs for Magnetic Fusion
Page 3:
Research Needs for Magnetic Fusion
Page 7 and 8:
ExEcutivE SuMMaRy nuclear fusion
Page 9 and 10:
Magnetic confinement magnetic confi
Page 11 and 12:
The thrusts span a wide range of si
Page 13 and 14:
eactor, most heat comes from fusion
Page 15 and 16:
thrust 18: achieve high-performance
Page 17 and 18:
confinement is measured by the so-c
Page 19:
PART I: ISSUES AND RESEARCH REQUIRE
Page 22 and 23:
ReneW Organization: Themes The stru
Page 24 and 25:
22 Table 1. ReNeW Thrusts Address R
Page 26 and 27:
ON PREVIOUS PAGE Nonlinear simulati
Page 28 and 29:
extended operation phase. The optim
Page 30 and 31:
Figure 2. Alpha particles can cause
Page 32 and 33:
Figure 3. Spectrogram of the time-v
Page 34 and 35:
Do the alpha particles couple to th
Page 36 and 37:
• improved understanding of the e
Page 38 and 39:
most relevant to iteR. Recent obser
Page 40 and 41:
H-mode access: access to the h-mode
Page 42 and 43:
although present-day devices have m
Page 44 and 45:
estimates indicate that it will be
Page 46 and 47:
can enter the plasma core and dimin
Page 48 and 49:
ent drive alone cannot account for
Page 50 and 51:
Figure 10. Control involves the ele
Page 52 and 53:
to operation of iteR. solutions for
Page 54 and 55:
• identification and stabilizatio
Page 56 and 57:
Disruption prediction accurate pred
Page 58 and 59:
Figure 12. The application of non-a
Page 60 and 61:
ion losses, a quantitative predicti
Page 62 and 63:
due to incompatibility of the measu
Page 64 and 65:
agnostic measurements of critical p
Page 66 and 67:
quires assessment of when potential
Page 68 and 69:
suggesTions for furTher reading 1.
Page 70 and 71:
miTigaTing TransienT eVenTs in a se
Page 72 and 73:
ON PREVIOUS PAGE Nonlinear simulati
Page 74 and 75:
increasing power density and pulse
Page 76 and 77:
of recent accomplishments that have
Page 78 and 79:
ity limits have been maintained. in
Page 80 and 81:
highly risky in such an environment
Page 82 and 83:
proximity-coil-based magnetics is ~
Page 84 and 85:
will dominate the external sources
Page 86 and 87:
The barrier gradient is generally l
Page 88 and 89:
interaction with plasma boundary an
Page 90 and 91:
itER-at aRiES-i aRiES-at b n (%) 3.
Page 92 and 93:
and morphology, are needed. new mea
Page 94 and 95:
field and temperature fluctuations
Page 96 and 97:
large-scale process control problem
Page 98 and 99:
tics. integrated control methods fo
Page 100 and 101:
ing and design include computationa
Page 102 and 103:
dated in the corresponding structur
Page 104 and 105:
These requirements are applicable t
Page 106 and 107:
• assess computationally, on test
Page 108 and 109:
Research Requirements for Electron
Page 110 and 111:
the launcher design is partly “tr
Page 112 and 113:
tunities and goals for a few of the
Page 114 and 115:
front layers of the field magnets c
Page 116 and 117:
R&D Strategy a number of critical t
Page 118 and 119:
formance burning plasmas are covere
Page 120 and 121:
CreaTing prediCTaBle, high-performa
Page 122 and 123:
magneTs JosePh mineRvini, massachus
Page 124 and 125:
ON PREVIOUS PAGE Design of the ITER
Page 126 and 127:
to stabilize deleterious plasma mod
Page 128 and 129:
longer than the (solid) thermal equ
Page 130 and 131:
Promising new ideas have been devel
Page 132 and 133:
to handle 10 mW/m 2 , and elms with
Page 134 and 135:
• liquid surface PFc operation in
Page 136 and 137:
integrated effort that includes fun
Page 138 and 139:
Taming The plasma-maTerial inTerfaC
Page 140 and 141:
138
Page 142 and 143:
ON PREVIOUS PAGE Design of an ITER
Page 144 and 145:
trons in the breeding blanket. Thes
Page 146 and 147:
Safety and Environment • developm
Page 148 and 149:
plasma and gas to the scrape-off la
Page 150 and 151:
gaps: need to select and test the t
Page 152 and 153:
• neutron and other radiation tra
Page 154 and 155:
emphasis on modeling and expertise
Page 156 and 157:
gap: Current understanding of stren
Page 158 and 159:
Research needs critical research ne
Page 160 and 161:
• Proposing integrated safety des
Page 162 and 163:
• techniques and instruments to a
Page 164 and 165:
Qualifying DEMO Components Possible
Page 166 and 167:
• developing the design of an eff
Page 168 and 169:
harnessing fusion power Theme memBe
Page 170 and 171:
168
Page 172 and 173:
ON PREVIOUS PAGE Reconstruction of
Page 174 and 175:
Figure 1. Configuration space for t
Page 176 and 177:
of 40%.) localized instabilities (t
Page 178 and 179:
• Reduction of spheromak magnetic
Page 180 and 181:
ment, but also micro- and macro-ins
Page 182 and 183:
esearch requirements • evaluate t
Page 184 and 185:
the banana regime, low turbulent tr
Page 186 and 187:
in stellarator discharges with ohmi
Page 188 and 189:
• investigate how demountable coi
Page 190 and 191:
tion using a central solenoid is al
Page 192 and 193:
functions, edge flows, and edge neu
Page 194 and 195:
Development of predictive capabilit
Page 196 and 197:
Edge localized modes (ELMs): edge l
Page 198 and 199:
theory predictions for alfvén inst
Page 200 and 201:
coils, to permit replacement of the
Page 202 and 203:
stand the relative roles of long-to
Page 204 and 205:
Table 1. 202
Page 206 and 207:
primarily electrostatic, in the cas
Page 208 and 209:
to be important in present experime
Page 210 and 211:
PLaSMa bOunDaRy intERaCtiOnS The ex
Page 212 and 213:
calized field errors that can cause
Page 214 and 215:
needed Theory, Computation, Modelin
Page 216 and 217:
Scientific Issues and research requ
Page 218 and 219:
esearch requirements new facilities
Page 220 and 221:
small, concept exploration experime
Page 222 and 223:
tRanSPORt: DEtERMinE unDERLying tRa
Page 224 and 225:
esearch requirements analysis of ne
Page 226 and 227:
nEEDED FaCiLitiES nEEDED tHEORy, CO
Page 228 and 229:
connections Between Research Requir
Page 230 and 231:
opTimizing The magneTiC ConfiguraTi
Page 232 and 233:
230
Page 234 and 235:
232
Page 236 and 237:
234
Page 238 and 239:
Proposed actions: • Prioritize bu
Page 240 and 241:
3) as planning matures for the rese
Page 242 and 243:
that have high impact, that benefit
Page 244 and 245:
could have an impact on the identif
Page 246 and 247:
The Us fusion program is well posit
Page 248 and 249:
Mitigation of disruptions in the ev
Page 250 and 251:
elevant plasmas for very long pulse
Page 252 and 253:
and stability, and mitigation requi
Page 254 and 255:
• control alpha heating feedback
Page 256 and 257:
heavy ion beam probes (already in u
Page 258 and 259:
alpha particles (ash removal). mode
Page 260 and 261:
• determine minimum heating power
Page 262 and 263:
Research should focus on developing
Page 264 and 265:
estal structure need to be coupled
Page 266 and 267:
• sufficient heating with little
Page 268 and 269:
Proposed actions: Short-term: begin
Page 270 and 271:
Demonstrate active control of the p
Page 272 and 273:
Demonstrate burn control and contro
Page 274 and 275:
Develop the means for and demonstra
Page 276 and 277:
Medium-term: Test and optimize full
Page 278 and 279:
276
Page 280 and 281:
• Recruit, train and support dedi
Page 282 and 283:
With this information in hand, phys
Page 284 and 285:
to carry out the validation program
Page 286 and 287:
and new devices could be designed w
Page 288 and 289:
• high-field sc magnets for stead
Page 290 and 291:
Element 2 — High current conducto
Page 292 and 293:
Element 7 — integration of conduc
Page 294 and 295:
many other scientific fields are be
Page 296 and 297:
• based on these assessments, pro
Page 298 and 299:
systems include neutral beams, ion
Page 300 and 301:
The Us d-t facility, studied in 1b,
Page 302 and 303:
300
Page 304 and 305:
• design and implement innovation
Page 306 and 307:
the controlling instabilities and s
Page 308 and 309:
cross-field transport in the pedest
Page 310 and 311:
The modeling of near-surface plasma
Page 312 and 313:
310
Page 314 and 315:
• build large-size test stands wh
Page 316 and 317:
trol of the energy, impact angle, a
Page 318 and 319:
ties that take advantage of simple
Page 320 and 321:
ased materials development with adv
Page 322 and 323:
introduction Thrust 11 addresses th
Page 324 and 325:
technology is now evolving to inclu
Page 326 and 327:
The elements of a thrust to develop
Page 328 and 329:
The plasma facing components in a d
Page 330 and 331:
to demonstrate that steady and tran
Page 332 and 333:
mum of nuclear activation and prese
Page 334 and 335:
332
Page 336 and 337:
introduction harnessing fusion powe
Page 338 and 339:
each Thrust 13 element includes the
Page 340 and 341:
Figure 3. System concept for perfor
Page 342 and 343:
equirements. Understanding the fuel
Page 344 and 345:
• Use a combination of existing a
Page 346 and 347: chemical interactions between the s
Page 348 and 349: dose fusion-relevant environment wi
Page 350 and 351: Use a combination of existing and n
Page 352 and 353: 350
Page 354 and 355: evaluate, through advanced design a
Page 356 and 357: at the time when the demo design is
Page 358 and 359: 3. Computational analysis managemen
Page 360 and 361: Materials and Components: Fuel Cycl
Page 362 and 363: • employ energetic particle beams
Page 364 and 365: • develop and validate theoretica
Page 366 and 367: • develop new diagnostics for int
Page 368 and 369: • increase sustained noninductive
Page 370 and 371: 368
Page 372 and 373: Proposed actions: 1. conduct two qu
Page 374 and 375: The key areas in which new knowledg
Page 376 and 377: • exploration of high-temperature
Page 378 and 379: • availability of high-power radi
Page 380 and 381: 378
Page 382 and 383: • study FRc stability at small io
Page 384 and 385: techniques for integrated data anal
Page 386 and 387: 4. based on the outcome of actions
Page 388 and 389: 2. With information from action 1,
Page 390 and 391: 388
Page 392 and 393: aCROnyMS anD abbREViatiOnS (continu
Page 394 and 395: aCROnyMS anD abbREViatiOnS (continu
Page 398 and 399: aPPENdix c: tHEME WoRKSHoPS tHEME W
Page 400 and 401: 14. d.l. humphreys, Active Realtime
Page 402 and 403: tHEME 2: CREating PREDiCtabLE HigH-
Page 404 and 405: 43. t.W. Petrie, White Paper: Some
Page 406 and 407: tHEME 3: taMing tHE PLaSMa MatERiaL
Page 408 and 409: 37. e.J. strait, J.c. Wesley, m.J.
Page 410 and 411: 20. s.a. maloy and e. Pitcher, Fusi
Page 412 and 413: tHEME 5: OPtiMizing tHE MagnEtiC CO
Page 414 and 415: 39. P.W. terry, a. boozer, J.s. sar
Page 416 and 417: don coRRell, lawrence livermore nat
Page 418 and 419: GeoRGe mckee, University of Wiscons
Page 420 and 421: tony tayloR, General atomics RichaR
show all

Research Needs for Magnetic Fusion Energy Sciences - US Burning ...

Create successful ePaper yourself

Delete template?

Save as template?