Analysis of breakdown on thermal and electrical measurements for SPIDER accelerating grids

Pesce, A.; Pomaro, N.

doi:10.1016/j.fusengdes.2011.01.135

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…Two past versions [4,6] of circuital models for SPIDER breakdown analyses, carried out with different aims, have been here merged into a full comprehensive one. Fig.…”

Section: Electrical Model Descriptionmentioning

confidence: 99%

“…These insulations a so they are unlikely to resist to trans especially considering the high fre events. Instead the EG cable feedthr on, composed by a series of e [4,6]. SIGN RESULTS urrent reference design was severity of the breakdown before or in absence of any on was mainly concentrated re a failure would cause a t or repairing time, like the f the HVB (containing the reported in Fig.…”

Section: B Stress On the High Voltage Bushmentioning

confidence: 99%

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Study of protection strategies against breakdown effects in the SPIDER experiment

Pesce

Zamengo

Bigi

et al. 2013

2013 IEEE 25th Symposium on Fusion Engineering (SOFE)

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PlasmaGridFilter PS Bias PS Feedthroughs HV deck Junction section Vacuum connectors Connection box V V V V V V V V VBias VPGL VPGR VEG VPG-SO VPG-EG ΔVcable-screen Vscreen Extraction Grid PS Bias Plate PS V VBP-PG VBP V RF PS TL screens Vessel Acceleration Grid PS 0,5 µF 1 µF Damping Resistor Ion Source PSFig. 1. Layout of source electrical connections showing the locations of data acquistion and capacitors installation. Abstract-The prototype of the ITER HNB Ion Source will be tested in the facility called SPIDER (Source for the Production of Ions of Deuterium Extracted from RadioFrequency plasma), under construction at Consorzio RFX site in Padua, Italy. During the operation, several breakdowns are expected to occur across the -96 kV Accelerator gap, causing transient overvoltages between parts normally at low voltage and large overcurrents flowing from the Power Supplies to the source. The paper firstly describes the development of the fast transient electrical model of the overall SPIDER electric system and then the results of the analyses performed with the reference design configuration, showing severe overvoltages in particular on the Ion Source and on the HV Bushing feedthroughs. The installation of some countermeasures, as local capacitors or a damping resistor was finally simulated, showing an effective limitation of these electrical stresses.

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“…Two past versions [4,6] of circuital models for SPIDER breakdown analyses, carried out with different aims, have been here merged into a full comprehensive one. Fig.…”

Section: Electrical Model Descriptionmentioning

confidence: 99%

Section: B Stress On the High Voltage Bushmentioning

confidence: 99%

Study of protection strategies against breakdown effects in the SPIDER experiment

Pesce

Zamengo

Bigi

et al. 2013

2013 IEEE 25th Symposium on Fusion Engineering (SOFE)

View full text Add to dashboard Cite

show abstract

“…This electrical layout introduces voltages between the ion source frame and the connection box for bias plate and plasma grid TCs (see Table 1), and between the electric bushing flange and the connector for ion source TCs; furthermore, very high transient over-voltages can occur during breakdowns. Two solutions will be implemented in order to handle these electrical tensions [6]:…”

Section: Cabling and Routing For The Ion Sourcementioning

confidence: 99%