Abstract Methods of modifying sawtooth oscillations using waves in the ion cyclotron range of frequencies (ICRF) in the JET tokamak are presented. Examples of sawtooth stabilization by ICRF-accelerated high-energy ions are shown, including experiments with ICRF-acceleration of 4He-beam ions to simulate the effects of fusion born alpha particles. With high power ICRF heating in low-density plasmas, fast ion stabilization of sawteeth is lost and a new type of small-period and small-amplitude sawteeth appears. ICRF-induced radial pinch with toroidally asymmetric waves is found to be useful in affecting the radial profile of the ICRF-driven fast ion populations and thereby their influence on sawteeth. Ion cyclotron current drive (ICCD) applied ...
Stabilisation of sawteeth due to #alpha#-particles or ion cyclotron resonance heating (ICRH) is well...
2 Modification of the sawtooth period through Ion Cyclotron Heating and Current Drive (ICRF) has bee...
Modification of the sawtooth period through ion cyclotron resonance frequency (ICRF) heating and cur...
The question of sawtooth stabilisation at very high fast ion energy contents has been addressed in d...
A novel technique for sawteeth control in tokamak plasmas using ion-cyclotron resonance heating (ICR...
Abstract. Dedicated JET experiments have been devised in order to test the predictions of a recent t...
Experimental evidence from the JET tokamak is presented supporting the predictions of a recent theor...
Long period sawteeth have been observed to result in low-beta triggering of neo-classical tearing mo...
Sawtooth stabilisation by fast ions is investigated in deuterium (D) and D-helium 3 (He3) plasmas of...
A new scenario to delay or prevent neoclassical tearing mode (NTM) onset is presented. By active saw...
New experiments at JET with the ITER-like wall show for the first time that ITER-relevant low field ...
Interaction of waves in the ion cyclotron range of frequencies (ICRF) with a plasma has a number of ...
New experiments at JET with the ITER-like wall show for the first time that ITER-relevant low field ...
In a tokamak fusion reactor the energetic alpha particles will transiently stabilize the magnetohydr...
I – Introduction – Increased sawtooth stabilization leading to long sawtooth periods is a known obse...
Stabilisation of sawteeth due to #alpha#-particles or ion cyclotron resonance heating (ICRH) is well...
2 Modification of the sawtooth period through Ion Cyclotron Heating and Current Drive (ICRF) has bee...
Modification of the sawtooth period through ion cyclotron resonance frequency (ICRF) heating and cur...
The question of sawtooth stabilisation at very high fast ion energy contents has been addressed in d...
A novel technique for sawteeth control in tokamak plasmas using ion-cyclotron resonance heating (ICR...
Abstract. Dedicated JET experiments have been devised in order to test the predictions of a recent t...
Experimental evidence from the JET tokamak is presented supporting the predictions of a recent theor...
Long period sawteeth have been observed to result in low-beta triggering of neo-classical tearing mo...
Sawtooth stabilisation by fast ions is investigated in deuterium (D) and D-helium 3 (He3) plasmas of...
A new scenario to delay or prevent neoclassical tearing mode (NTM) onset is presented. By active saw...
New experiments at JET with the ITER-like wall show for the first time that ITER-relevant low field ...
Interaction of waves in the ion cyclotron range of frequencies (ICRF) with a plasma has a number of ...
New experiments at JET with the ITER-like wall show for the first time that ITER-relevant low field ...
In a tokamak fusion reactor the energetic alpha particles will transiently stabilize the magnetohydr...
I – Introduction – Increased sawtooth stabilization leading to long sawtooth periods is a known obse...
Stabilisation of sawteeth due to #alpha#-particles or ion cyclotron resonance heating (ICRH) is well...
2 Modification of the sawtooth period through Ion Cyclotron Heating and Current Drive (ICRF) has bee...
Modification of the sawtooth period through ion cyclotron resonance frequency (ICRF) heating and cur...
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