Electromagnetic studies of the ITER generic upper port plug

Sato, Kazuyoshi; Yaguchi, Eiichi; Pitcher, C.S.; Walker, Chris; Encheva, A.; Kawano, Y.; Kusama, Y.

doi:10.1016/j.fusengdes.2011.02.020

Cited by 4 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Here the EM load due to the plasma disruption VDE UP 36ms is assumed with a sinusoidal function as a driving force, which is given on the right side in (1). The frequency of the driving force ω is roughly 7 Hz.…”

Section: Figure 5 Normalized Displacement Of Upp In the Toroidal Dirementioning

confidence: 99%

See 1 more Smart Citation

Dynamic response of the ITER diagnostic upper port plug during a plasma disruption

Pak

Udintsev

Maquet

et al. 2013

2013 IEEE 25th Symposium on Fusion Engineering (SOFE)

View full text Add to dashboard Cite

The diagnostic upper port plug in ITER is a long metal box cantilevered to the vacuum vessel port with 42 x M52 studs and nuts. The plug structure has a heavy payload at the front such as the Diagnostic First Wall (DFW) and the Diagnostic Shield Module (DSM) to protect the diagnostic components from plasma and neutron fluxes. This kind of structural configuration is susceptible to a resonance with the transient external load. For the upper port plug, the design-driving load is electromagnetic (EM) forces due to plasma disruptions. In this study the dynamic amplification factor (DAF) of the structure is calculated for such EM loads. The bolted joint at the back flange of the plug structure is also taken into account together with the port extension of the vacuum vessel and its influence on the dynamic behavior is investigated. The analysis results show that the bolted joint reduces the DAF as well as the natural frequency of the structure.

show abstract

Section: Figure 5 Normalized Displacement Of Upp In the Toroidal Dirementioning

confidence: 99%

“…In the previous studies [1] [2], the results showed different dynamic amplification factor (DAF). One of them took into account only the UPP structure for the dynamic analysis and the DAF was in the range of 1.3 to 1.4.…”

Section: Introductionmentioning

confidence: 99%

Dynamic response of the ITER diagnostic upper port plug during a plasma disruption

Pak

Udintsev

Maquet

et al. 2013

2013 IEEE 25th Symposium on Fusion Engineering (SOFE)

View full text Add to dashboard Cite

show abstract

“…Different electromagnetic analyses over different parts of VV components were made in [4][5][6][7][8][9]. In this paper the three plasma disruption cases studied are: major disruption upwards linear decay in 36 ms (MD UP LIN36), vertical displacements events, upwards and downwards linear decay in 36 ms (VDE UP LIN36 and VDE DW LIN36).…”

Section: Introductionmentioning

confidence: 99%