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UID:UW-Physics-Event-6121
DTSTART:20200928T170000Z
DURATION:PT1H0M0S
DTSTAMP:20240328T155011Z
LAST-MODIFIED:20200921T151816Z
LOCATION:Zoom Meeting
SUMMARY:in present experiments \, Plasma Physics (Physics/ECE/NE 922)
Seminar\, Dr. Alberto Loarte\, Head of Science Division of the ITER Or
ganization
DESCRIPTION:The ITER project aims to demonstrate the scientific and te
chnological feasibility of fusion power for peaceful purposes and to g
ain the knowledge necessary for the design of next stage fusion reacto
rs. The project is organized as an international research and developm
ent project with seven Members\; the European Union (represented by EU
RATOM)\, Japan\, the People’s Republic of China\, India\, the Republ
ic of Korea\, the Russian Federation and the USA. The overall aim of t
he ITER project is reflected in its three fusion power production goal
s (Q ≥ 10 gain for 300-500 s\, Q ≥ 5 for 1000s and Q ≥ 5 for 300
0s corresponding to steady-state tokamak operation) and associated fus
ion technology demonstration.
\nTo define the plan of research a
nd development and of the exploitation of the facility necessary to me
et the ITER mission goals\, the ITER Research Plan (IRP) has been elab
orated. The IRP is divided into two main phases after First Plasma dem
onstration: operation in H/He plasmas (Pre-Fusion Plasma Operation (PF
PO)) and in DD/DT plasmas (Fusion Plasma Operation (FPO)). These two m
ain phases are subdivided into experimental campaigns\, separated by f
urther assembly phases\, in which the tokamak ancillary systems (heati
ng and current drive\, fuelling\, etc.) are progressively implemented
to their baseline configurations to be completed before FPO (“Staged
Approach”). The IRP describes the objectives of each operational ca
mpaign consistent with the available tokamak systems\, details the exp
erimental plan to achieve them (including options)\, and identifies th
e main risks of the experimental plan to achieve the objectives of eac
h phase and corresponding mitigation actions.
\nThe main physics o
bjectives of the two initial experimental campaigns (PFPO-1 and PFPO-2
) are the achievement of high confinement plasmas (H-mode) and the dem
onstration of plasma operation up to the ITER design values for plasma
current (15 MA) and toroidal field (5.3T) in L-mode plasmas. These ex
periments will characterize for the first time energy and particle con
finement in a tokamak plasma at the reactor scale\, to compare with th
e extrapolations made on the basis of present experiments that have be
en used for the ITER design. The FPO campaigns cover a long operationa
l period from the start of DD plasma operation\, with the principal ob
jectives being the demonstration of the Q = 10 inductive operation and
Q = 5 operation with in-principle steady-state conditions. The exper
imental plan to proceed from DD towards DT plasmas builds on the resul
ts expected to be achieved in PFPO. It includes a verification of the
L-mode 15 MA development path demonstrated in PFPO and the initial exp
ansion of the H-mode operational space in DD plasmas from low values o
f current and toroidal field. This is followed by a gradual evolution
toward DT plasmas with increasing T content plasmas leading to a demo
nstration of Q = 10 operation for a duration of 50 s. This initial pha
se is then followed by experimental campaigns focused on increasing th
e burn length of the inductive Q = 10 scenario towards the objective o
f 300-500s and the development of the in-principle steady-state Q = 5
scenarios\, where the optimization of the pressure and plasma current
profiles will be a main focus of the experimental programme.
\nThe
presentation will introduce the ITER project\, describe progress in t
he construction of the ITER tokamak device and its ancillary systems a
nd will describe the experimental and modelling R&D required to suppor
t the refinement or consolidation of the IRP in advance of its executi
on in ITER itself.
\n
\n
\nPAUL W TERRY is inviting you to
a scheduled Zoom meeting.
\n
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\n
URL:https://www.physics.wisc.edu/events/?id=6121
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