Correlation of Neutral Beam Injection Parameters and Core B with Anomalous First-Wall Heating During QH-Mode

Anomalous first-wall heating has been observed far from the divertor strike point during QH-mode in DIII-D, with measured heat flux comparable to that at the outer strike point. The data are consistent with deuterium ions of approximately the pedestal energy carrying the anomalous heat flux. Although an instability has not been identified that is correlated with the anomalous heat flux, two classes of behavior have been observed: one in which the anomalous heat flux depends linearly on core {beta}, and another class with no {beta}-dependence. The anomalous heat flux depends strongly on the injected beam energy of the non-tangentially-injected neutral beams but not that of the tangential beams

perbedaan Pengaruh Latihan Kombinasi Lari-Lompat Tanah Datar dan Tanah Berpasir Terhadap Peningkatan Power Otot Tungkai Pada Mahasiswa Pembinaan Prestasi Taekwondo POK FKIP UNS Tahun 2017

ABSTRAK Alif Fatkhurahman. PERBEDAAN PENGARUH LATIHAN KOMBINASI LARI-LOMPAT TANAH DATAR DAN TANAH BERPASIR TERHADAP PENINGKATAN POWER OTOT TUNGKAI PADA MAHASISWA PEMBINAN PRESTASI TAEKWONDO POK FKIP UNS TAHUN 2017. Skripsi, Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta. Maret 2018. Tujuan penelitian ini adalah untukmengetahui: 1) Pengaruh latihan kombinasi lari – lompat tanah datar terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinan prestasi taekwondo POK FKIP UNS Tahun 2017. 2) Pengaruh latihan kombinasi lari – lompat tanah berpasir terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinan prestasi taekwondo POK FKIP UNS Tahun 2017. 3) Perbedaan pengaruh latihan kombinasi lari – lompat tanah datar dan tanah berpasir terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinan prestasi taekwondo POK FKIP UNS Tahun 2017. Penelitian ini merupakan eksperimen, populasi dan sampel dalam penelitian ini adalah mahasiswa putra pembinaan prestasi taekwondo POK FKIP UNS yang berjumlah 20 mahasiswa. Sampel dalam penelitian ini dibagi menjadi 2 kelompok, kelompok 1 sejumlah 10 orang dengan mendapatkan pelatihan lari-lompat tanah datar dan kelompok 2 sejumlah 10 orang dengan mendapatkan pelatihan lari-lompat tanah berpasir. Proses pembagian kelompok menggunakan teknik ordinal pairing. Teknik analisis data menggunakan uji t-test. Hasil penelitian diperoleh kesimpulan bahwa ada pengaruh latihan kombinasi lari-lompat tanah datar terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinaan prestasi taekwondo POK FKIP UNS Tahun 2017, hal ini ditunjukkan dengan nilai thitung = 12,537 > ttabel = 1,83 ini berarti ada perbedaan yang signifikan antara data pre test dengan data post test pada kelompok eksperimen 1 (latihan kombinasi lari-lompat di tanah datar). Ada pengaruh latihan kombinasi lari-lompat tanah berpasir terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinaan prestasi taekwondo POK FKIP UNS Tahun 2017, hal ini ditunjukkan dengan thitung = 14,581 > ttabel = 1,83 ini berarti ada perbedaan yang signifikan antara data pre test dengan data post test pada kelompok eksperimen 2 (latihan kombinasi lari-lompat di tanah berpasir). Ada perbedaan pengaruh latihan kombinasi lari-lompat tanah datar dan tanah berpasir terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinaan prestasi taekwondo POK FKIP UNS Tahun 2017, hal ini ditunjukkan dengan nilai thitung = 3,131 > ttabel = 1,83. Hasil ini menunjukkan bahwa metode latihan kombinasi lari-lompat di tanah berpasir lebih baik dibandingkan dengan metode latihan kombinasi lari-lompat di tanah datar terhadap peningkatan power otot tungkai mahasiswa pembinaan prestasi taekwondo POK FKIP UNS Tahun 2017. Kata kunci: Power otot tungkai, metode latihan lari-lompat, tanah datar, tanah berpasir. �ABSTRACT Alif Fatkhurahman. INFLUENCE of DIFFERENCE EXERCISE COMBINATION RUN-JUMP FLAT GROUND and SANDY SOIL AGAINST INCREASED POWER LIMB MUSCLES on STUDENT ACHIEVEMENT COACHING FKIP UNS POK TAEKWONDO YEAR 2017. Thesis, Faculty of teacher training and educational sciences of the University Sebelas maret Maret Surakarta. March 2018. The purpose of this research is untukmengetahui: 1) the influence of combination of exercise running jump – flat ground against increased Power limb muscles on student achievement pembinan FKIP UNS POK taekwondo Year 2017. 2) influence of combination of exercise running jump – sandy soil against increased Power limb muscles on student achievement pembinan FKIP UNS POK taekwondo Year 2017. influence of Difference exercise 3) combination of the run – skip the flat ground and sandy soil against increased Power limb muscles on student achievement pembinan FKIP UNS POK taekwondo Year 2017. This research is experimental, the population and the sample in this research is a student son coaching taekwondo POK FKIP UNS achievements that add up to 20 students. The sample in this research are divided into two groups, group 1 a number of 10 people by getting the training run-flat ground and jump Group 1 a number of 10 people by getting the training run-jump-sandy soil. The process uses ordinal group Division pairing. Data analysis techniques using a t-test test. The research results obtained conclusions that there was influence of exercise a combination of run-flat land the jump to increased Power limb muscles on student achievement coaching taekwondo POK FKIP UNS Year 2017, it is indicated by the value of thitung = 12.537 > ttabel = 1.83 this means there is a significant difference between the data pre test post test data on the experimental group 1 (combination workouts run-jump across flat ground). There is the influence of combination of exercise running jump-sandy soil to increased Power limb muscles on student achievement coaching taekwondo POK FKIP UNS Year 2017, it is indicated with thitung = 14.581 > ttabel = 1.83 this means there are differences that significantly between the data pre test post test data on the experimental group 2 (practice run-jump combination in the sandy soil). There is a difference of influence of exercise running-jump combination flat ground and sandy soil to increased Power limb muscles on student achievement coaching taekwondo POK FKIP UNS Year 2017, it is indicated by the value of thitung = ttabel > 3.131 = 1.83. These results indicate that the method combination exercises run-jump across the sandy soil is better compared with the method of exercise combinations run-jump across the flat land to increased power student achievement coaching limb muscles taekwondo POK FKIP UNS The year 2017. Keywords: Power method of limb muscles, exercise run-jump, flat ground, sandy soil

Characterization of Alfvén eigenmodes using NBI during current ramp-up in the ASDEX Upgrade tokamak

Alfvén cascades (ACs) and beta-induced Alfvén eigenmodes (BAEs) have been studied in the ASDEX Upgrade tokamak during the current ramp-up phase of neutral beam heated (NBI) discharges using principally reflectometry, but also soft x-ray (SXR) and electron cyclotron emission imaging (ECEI). ACs have been observed on the tokamak high-field side and low-field side in reflectometer signals even in the absence of a cutoff. Under this condition it is shown that the response is not due to an interferometry effect but due to backscatter. The radial structure of BAEs and ACs has been obtained by cross-correlating the reflectometer with SXR, ECEI and magnetic signals. The reflectometer signals reveal a variety of Alfvén eigenmodes with different characteristics depending on the plasma heating scheme. Here, discharges with similar plasma parameters but varying NBI sources and/or additional electron cyclotron resonance heating were performed. It is shown that the bursting behaviour of ACs for q mi

Fast Ion Induced Shearing of 2D Alfven Eigenmodes Measured by Electron Cyclotron Emission Imaging

Two-dimensional images of electron temperature perturbations are obtained with electron cyclotron emission imaging (ECEI) on the DIII-D tokamak and compared to Alfven eigenmode structures obtained by numerical modeling using both ideal MHD and hybrid MHD-gyrofluid codes. While many features of the observations are found to be in excellent agreement with simulations using an ideal MHD code (NOVA), other characteristics distinctly reveal the influence of fast ions on the mode structures. These features are found to be well described by the nonperturbative hybrid MHD-gyrofluid model TAEFL

Fast-ion transport induced by Alfven eigenmodes in the ASDEX Upgrade tokamak

A comprehensive suite of diagnostics has allowed detailed measurements of the Alfven eigenmode (AE) spatial structure and subsequent fast-ion transport in the ASDEX Upgrade (AUG) tokamak [ 1]. Reversed shear Alfven eigenmodes (RSAEs) and toroidal induced Alfven eigenmodes (TAEs) have been driven unstable by fast ions from ICRH as well as NBI origin. In ICRF heated plasmas, diffusive and convective fast-ion losses induced by AEs have been characterized in fast-ion phase space. While single RSAEs and TAEs eject resonant fast ions in a convective process directly proportional to the fluctuation amplitude, delta B/B, the overlapping of multiple RSAE and TAE spatial structures and wave-particle resonances leads to a large diffusive loss, scaling as (delta B/B)(2). In beam heated discharges, coherent fast-ion losses have been observed primarily due to TAEs. Core localized, low amplitude NBI driven RSAEs have not been observed to cause significant coherent fast-ion losses. The temporal evolution of the confined fast-ion profile in the presence of RSAEs and TAEs has been monitored with high spatial and temporal resolution. A large drop in the central fast-ion density due to many RSAEs has been observed as q(min) passes through an integer. The AE radial and poloidal structures have been obtained with unprecedented details using a fast SXR as well as 1D and 2D ECE radiometers. GOURDON and HAGIS simulations have been performed to identify the orbit topology of the escaping ions and study the transport mechanisms. Both passing and trapped ions are strongly redistributed by AEs

Alfven eigenmode structure during off-axis neutral beam injection

The spatial structure of Alfven eigenmodes on the DIII-D tokamak is compared for contrasting fast ion deposition profiles resulting from on- and off-axis neutral beam injection (NBI). In both cases, poloidal mode rotation and eigenmode twist, or radial phase variation, are correlated with the direction of the normal ion diamagnetic flow and readily inverted with a reversal of toroidal magnetic field, B-T. While off-axis NBI results in weakly driven reversed shear induced Alfven eigenmodes due to reduced fast ion pressure gradient,. del beta(fast), in the region of the mode, these marginally unstable modes exhibit a 2D phase structure that is indistinguishable from that observed during on- axis injection. This result is consistent with recent explorations using the non-perturbative codes Gyro and TAEFL that show a weak dependence of eigenmode structure on drive when fast ion density is uniformly reduced by a scalar multiplier. These codes also obtain unstable, counter-propagating modes with the inverted 2D phase structure when BT is kept constant and the diamagnetic flow direction is reversed by making. del beta(fast) sufficiently positive for an isotropic population of fast ions. While measurements of the spatial profile of fast ion D-alpha light from the recently upgraded charge exchange recombination diagnostic on DIII-D suggest a strong modification of fast ion pressure towards this limit, no counter-propagating modes have yet been observed in experiment