Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2405.20243 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909213405478912 |
|---|---|
| author | MANTA Collaboration Rutherford, G. Wilson, H. S. Saltzman, A. Arnold, D. Ball, J. L. Benjamin, S. Bielajew, R. de Boucaud, N. Calvo-Carrera, M. Chandra, R. Choudhury, H. Cummings, C. Corsaro, L. DaSilva, N. Diab, R. Devitre, A. R. Ferry, S. Frank, S. J. Hansen, C. J. Jerkins, J. Johnson, J. D. Lunia, P. van de Lindt, J. Mackie, S. Maris, A. D. Mandell, N. R. Miller, M. A. Mouratidis, T. Nelson, A. O. Pharr, M. Peterson, E. E. Rodriguez-Fernandez, P. Segantin, S. Tobin, M. Velberg, A. Wang, A. M. Wigram, M. Witham, J. Paz-Soldan, C. Whyte, D. G. |
| author_facet | MANTA Collaboration Rutherford, G. Wilson, H. S. Saltzman, A. Arnold, D. Ball, J. L. Benjamin, S. Bielajew, R. de Boucaud, N. Calvo-Carrera, M. Chandra, R. Choudhury, H. Cummings, C. Corsaro, L. DaSilva, N. Diab, R. Devitre, A. R. Ferry, S. Frank, S. J. Hansen, C. J. Jerkins, J. Johnson, J. D. Lunia, P. van de Lindt, J. Mackie, S. Maris, A. D. Mandell, N. R. Miller, M. A. Mouratidis, T. Nelson, A. O. Pharr, M. Peterson, E. E. Rodriguez-Fernandez, P. Segantin, S. Tobin, M. Velberg, A. Wang, A. M. Wigram, M. Witham, J. Paz-Soldan, C. Whyte, D. G. |
| contents | The MANTA (Modular Adjustable Negative Triangularity ARC-class) design study investigated how negative-triangularity (NT) may be leveraged in a compact, fusion pilot plant (FPP) to take a ``power-handling first" approach. The result is a pulsed, radiative, ELM-free tokamak that satisfies and exceeds the FPP requirements described in the 2021 National Academies of Sciences, Engineering, and Medicine report ``Bringing Fusion to the U.S. Grid". A self-consistent integrated modeling workflow predicts a fusion power of 450 MW and a plasma gain of 11.5 with only 23.5 MW of power to the scrape-off layer (SOL). This low $P_\text{SOL}$ together with impurity seeding and high density at the separatrix results in a peak heat flux of just 2.8 MW/m$^{2}$. MANTA's high aspect ratio provides space for a large central solenoid (CS), resulting in ${\sim}$15 minute inductive pulses. In spite of the high B fields on the CS and the other REBCO-based magnets, the electromagnetic stresses remain below structural and critical current density limits. Iterative optimization of neutron shielding and tritium breeding blanket yield tritium self-sufficiency with a breeding ratio of 1.15, a blanket power multiplication factor of 1.11, toroidal field coil lifetimes of $3100 \pm 400$ MW-yr, and poloidal field coil lifetimes of at least $890 \pm 40$ MW-yr. Following balance of plant modeling, MANTA is projected to generate 90 MW of net electricity at an electricity gain factor of ${\sim}2.4$. Systems-level economic analysis estimates an overnight cost of US\$3.4 billion, meeting the NASEM FPP requirement that this first-of-a-kind be less than US\$5 billion. The toroidal field coil cost and replacement time are the most critical upfront and lifetime cost drivers, respectively. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_20243 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | MANTA: A Negative-Triangularity NASEM-Compliant Fusion Pilot Plant MANTA Collaboration Rutherford, G. Wilson, H. S. Saltzman, A. Arnold, D. Ball, J. L. Benjamin, S. Bielajew, R. de Boucaud, N. Calvo-Carrera, M. Chandra, R. Choudhury, H. Cummings, C. Corsaro, L. DaSilva, N. Diab, R. Devitre, A. R. Ferry, S. Frank, S. J. Hansen, C. J. Jerkins, J. Johnson, J. D. Lunia, P. van de Lindt, J. Mackie, S. Maris, A. D. Mandell, N. R. Miller, M. A. Mouratidis, T. Nelson, A. O. Pharr, M. Peterson, E. E. Rodriguez-Fernandez, P. Segantin, S. Tobin, M. Velberg, A. Wang, A. M. Wigram, M. Witham, J. Paz-Soldan, C. Whyte, D. G. Plasma Physics The MANTA (Modular Adjustable Negative Triangularity ARC-class) design study investigated how negative-triangularity (NT) may be leveraged in a compact, fusion pilot plant (FPP) to take a ``power-handling first" approach. The result is a pulsed, radiative, ELM-free tokamak that satisfies and exceeds the FPP requirements described in the 2021 National Academies of Sciences, Engineering, and Medicine report ``Bringing Fusion to the U.S. Grid". A self-consistent integrated modeling workflow predicts a fusion power of 450 MW and a plasma gain of 11.5 with only 23.5 MW of power to the scrape-off layer (SOL). This low $P_\text{SOL}$ together with impurity seeding and high density at the separatrix results in a peak heat flux of just 2.8 MW/m$^{2}$. MANTA's high aspect ratio provides space for a large central solenoid (CS), resulting in ${\sim}$15 minute inductive pulses. In spite of the high B fields on the CS and the other REBCO-based magnets, the electromagnetic stresses remain below structural and critical current density limits. Iterative optimization of neutron shielding and tritium breeding blanket yield tritium self-sufficiency with a breeding ratio of 1.15, a blanket power multiplication factor of 1.11, toroidal field coil lifetimes of $3100 \pm 400$ MW-yr, and poloidal field coil lifetimes of at least $890 \pm 40$ MW-yr. Following balance of plant modeling, MANTA is projected to generate 90 MW of net electricity at an electricity gain factor of ${\sim}2.4$. Systems-level economic analysis estimates an overnight cost of US\$3.4 billion, meeting the NASEM FPP requirement that this first-of-a-kind be less than US\$5 billion. The toroidal field coil cost and replacement time are the most critical upfront and lifetime cost drivers, respectively. |
| title | MANTA: A Negative-Triangularity NASEM-Compliant Fusion Pilot Plant |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2405.20243 |