Adhesive and Barrier Sublayers for Metal Nanofilms Active Elements of Hall Sensors

Bolshakova, І.; Kost, Ya.; Radishevskyi, M. I.; Shurygin, F.; Vasyliev, Oleksandr; Васильевский, И. С.; Kuech, T. F.

doi:10.1007/978-981-15-3996-1_21

Cited by 1 publication

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The value we used as discriminating frequency of the observer, which produces the results shown in figure 7, is f 0 = ω 0 /2π = 5 Hz. Such value, which is not critical ( f 0 in the range 5-20 Hz provides essentially the same results), is compatible with the frequency response of advanced Hall sensor based magnetic diagnostics, which are being developed for future fusion machines, for both ex-vessel and in-vessel use [35][36][37][39][40][41][42].…”

Section: Rhp Data Fusion Experimentssupporting

confidence: 73%

“…For instance, both sensors may constitute a unique ceramic element (made with LTCC or possibly other technologies, mentioned further below) or, more likely, they may be coaxial/stacked next to each other. The Hall sensor can be realised with a radiation-hard semiconductor (for the case of ex-vessel applications) or, as more extensively reported in the introduction, one of the promising alternatives which use selected metals, or graphene, or doped diamond, in place of the semiconductor [35][36][37][39][40][41][42]. A relevant point concerns the classification of diagnostics in terms of the contribution they provide to specific measurement parameters, as follows [1,15]:…”

Section: High Performance Hybrid Magnetic Sensorsmentioning

confidence: 99%

“…Consequently, only few products were and are to date commercially available, and their specifications do not match the required fluence and maximum survival temperature. Significant R & D was hence carried out in the last two decades to develop Hall sensors resistant to fusion environment [29][30][31][32][33][34][35][36][37][38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

“…In particular, extensive R & D has been carried out in the last decade, and is ongoing, aimed at developing Hall sensors able to survive harsher conditions, corresponding to the ex-vessel and invessel environment of BPXs and DEMOs. The materials considered are in particular metals and carbon allotropes (doped diamond and graphene) [23][24][25][26][35][36][37][38][39][40][41][42]. The main advantages of metals are in general resistance to much larger neutron fluence and capability to operate at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Long term operation of the radiation-hard Hall probes system and the path toward a high performance hybrid magnetic field sensor

Quercia

Pironti²,

Bolshakova³

et al. 2022

Nucl. Fusion

View full text Add to dashboard Cite

The paper reports a systematic assessment of the Radiation-hard Hall Probes (RHP) magnetic diagnostic system of the JET tokamak, which is based on InSb semiconductor thin ﬁlms, and describes the path that lead to the proposal of an innovative magnetic probe concept. A relevant account of RHP operation during the recent Deuterium-Tritium experimental campaign (DTE2) is also provided, showing correct operation under ITER-like intense neutron ﬂux. The period considered for the systematic assessment of the RHP system ranges from October 2009 to March 2021, during which the machine produced more than 19000 pulses. The RHP system consists of six three-dimensional Hall probes, which have built-in recalibration capability, thanks to the presence of microsolenoids that produce a local known ﬁeld during a tailored automatic pre-pulse calibration sequence, that can also be initiated manually. During pulses, the microsolenoids can also be used as inductive sensors as their signals are recorded as well. Moreover, the system provides temperature measurements at the location of the probes, which are continuously recorded too. The assessment demonstrates accurate long-term operation of the RHP system. All the diagnostic channels reliably provide pre-pulse calibration data and pulse signals and the original sensitivities of the Hall sensors are preserved. Integration considerations and a data fusion analysis lead to the proposal of a high performance, compact, broadband, hybrid ﬁeld probe, consisting of the combination of an inductive coil and a Hall sensor, to be manufactured by means of the coil technology developed for ITER or an alternative concept with improved radiation-hardness. The hybrid probe is expected to deliver the advantages of both inductive and Hall sensing technologies, essentially in the same package size of a single ITER magnetic discrete probe. In particular, it would solve the problem of the drift of the integrator for long lasting burning plasma discharges. The signals produced by the coil and the Hall sensor, processed by means of a Luenberger-Kalman observer, provide a magnetic ﬁeld measurement which is non-drifting and low-noise. For these reasons, the hybrid probe has been proposed as the potential primary magnetic diagnostic sensor for future burning plasma experiments and demonstration fusion power plants.

show abstract