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All Journal Cakrawala Pendidikan Jurnal Pengembangan Energi Nuklir Indonesian Journal of Physics and Nuclear Applications INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Ilmu Fisika dan Terapannya (JIFTA)
Yosaphat Sumardi
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Astronomy Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics Social Sciences

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THE DOSE ANALYSIS OF BORON NEUTRON CAPTURE THERAPY (BNCT) TO THE BRAIN CANCER (GLIOBLASTOMA MULTIFORM) USING MCNPX-CODE WITH NEUTRON SOURCE FROM COLLIMATED THERMAL COLUMN KARTINI RESEARCH NUCLEAR Kholidah Hasyim; Yohannes Sardjono; Yosaphat Sumardi
Indonesian Journal of Physics and Nuclear Applications Vol 3 No 3 (2018)
Publisher : Fakultas Sains dan Matematika Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (683.433 KB) | DOI: 10.24246/ijpna.v3i3.95-101

Abstract

This research was aimed at discovering the optimum concentration of Boron-10 in concentrations range 20 µgram/gram until 35 µgram/gram with Boron Neutron Capture Therapy (BNCT) methods and the shortest time irradiation for cancer therapy. The research about dose analysis of Boron Neutron Capture Therapy (BNCT) to the brain cancer (Glioblastoma Multiform) using MCNPX-Code with a neutron source from Collimated Thermal Column Kartini Research Nuclear has been conducted. This research was a simulation-based experiment using MCNPX, and the data was arranged on a graph using OriginPro 8. The modelling was performed with the brain that contains cancer tissue as a target and the reactor as a radiation source. The variations of Boron concentrations in this research was on 20, 25, 30 and 35 μg/gram tumours. The outputs of MCNP were neutron scattering dose, gamma ray dose and neutron flux from the reactor. Neutron flux was used to calculate the doses of alpha, proton and gamma rays produced by the interaction of tissue material and thermal neutrons. Based on the calculations, the optimum concentration of Boron-10 in tumour tissue was for a 30 µg/gram tumour with the radiation dose in skin at less than 3 Gy. The irradiation times required were 2.79 hours for concentration 20 μg/gram ; 2.78 hours for concentration 25 μg/gram ; 2.77 hours for concentration 30 μg/gram ; 2.8 hours for concentration 35 μg/gram.
DESAIN TERAS DAN BAHAN BAKAR PLTN JENIS HTR-PBMR PADA DAYA 50 MWe DENGAN MENGGUNAKAN PROGRAM SRAC2006 Bima Caraka Putra; Yosaphat Sumardi; Yohannes Sardjono
Jurnal Pengembangan Energi Nuklir Vol 16, No 1 (2014): Juni 2014
Publisher : Pusat Kajian Sistem Energi Nuklir, Badan Tenaga Nuklir Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jpen.2014.16.1.2559

Abstract

ABSTRAK DESAIN TERAS DAN BAHAN BAKAR PLTN JENIS HTR-PBMR PADA DAYA 50 MWe DENGAN MENGGUNAKAN PROGRAM SRAC2006. Penelitian ini bertujuan untuk mengkaji desain teras dan bahan bakar PLTN jenis HTR-PBMR (HIGH TEMPERATURE REACTOR - PEBBLE BED MODULAR REACTOR) 50 MWe dari keadaan Beginning of Life (BOL) sampai Ending of Life (EOL) dengan masa operasi 8 tahun. Parameter yang dianalisis dalam penelitian ini adalah distribusi suhu di dalam teras, persen pengkayaan U235, komposisi bahan bakar, kekritisan, dan koefisien reaktivitas suhu teras. Penelitian dilakukan dengan menyiapkan data parameter desain teras antara lain densitas nuklida, dimensi bahan bakar dan teras, dan distribusi suhu aksial teras. Paket program SRAC2006 digunakan untuk mendapatkan nilai faktor multiplikasi effektif (keff) teras dari data input yang telah disiapkan. Hasil penelitian menunjukkan nilai kekritisan teras berbanding lurus dengan penambahan pengkayaan U235. Pengayaan optimum tanpa penggunaan burnable poison didapatkan pada nilai 10,125% dengan reaktifitas lebih sebesar 3,12% pada BOL. Penambahan burnable poison Gd2O3 didapat nilai optimumnya sebesar 12 ppm dengan nilai reaktifitas lebih pada BOL sebesar 0,38%. Untuk penggunaan Er2O3 nilai optimumnya adalah 290 ppm dengan reaktifitas lebih 1,24% pada saat BOL. Koefisien reaktivitas suhu teras tanpa burnable poison dan penggunaan Gd2O3 dan Er2O3 bernilai negatif yang menunjukkan sifat inherent safety-nya. Kata kunci: desain, teras, bahan bakar, PLTN, SRAC2006. ABSTRACT DESIGN OF 50 MWe HTR-PBMR REACTOR CORE AND NUCLEAR POWER PLANT FUEL USING SRAC2006 PROGRAMME. This research aims to assess the design of core and fuel of nuclear power plant type High Temperature Reactor-Pebble Bed Modular Reactor 50 MWe from the Beginning of Life (BOL) to Ending of life (EOL) with eight years operating life. The parameters that need to be analyzed in this research are the temperature distribution inside the core, quantity enrichment of U235 , fuel composition, criticality, and temperature reactivity coefficient of the core. The research was conducted with a data set of core design parameters such as nuclides density, core and fuel dimensions, and the axial temperature distribution inside the core. Using SRAC2006 program package, the effective multiplication factor (keff) values obtained from the input data that has been prepared. The results show the value of the criticality of core is proportional to the addition of U235 enrichment. The optimum enrichment obtained at 10.125% without the use of burnable poison with an excess reactivity of 3.12% at BOL. The addition Gd2O3 obtained an optimum value of 12 ppm burnable poison with an excess reactivity 0.38 %. The use of Er2O3 with an optimum value 290 ppm has an excess reactivity 1.24% at BOL. The core temperature reactivity coefficient with and without the use of burnable poison has a negative values that indicates the nature of its inherent safety. Keywords: design, fuel, nuclear power plant, SRAC2006.
PENGGUNAAN MICROSOFT EXCEL DALAM ANALISIS DATA EKSPERIMEN PADA PEMBELAJARAN FISIKA Yosaphat Sumardi
Jurnal Cakrawala Pendidikan No 2 (2002): Cakrawala Pendidikan edisi Juni 2002, Th. XXI, No. 2
Publisher : LPMPP Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2030.17 KB) | DOI: 10.21831/cp.v2i2.8759

Abstract

Microsoft Excel is one of the application programs calledspreadsheets, which enable users to supply data and instructionsin the form of commands and formulas to make the desired computationsA spreadsheet is nbt a computer langage used to writea program, it is an application program with which a user canorganize procedures for making calculations in a tabular formMicrosoft Excel is a powerhl program that can be used toanalyze data of an experiment in physics This applicationprogram is quite easy lu use and it is supported by adequate internalutilities for making calculations and graphs.Many kinds of data from experiments in physics can be analyzedwith the help of the application program Microsoft Excel.Various calculations can be done rapidly and easily by putting touse the internal hnctions in this application program An analysisfitting a curve to batches of experimental data can also bedone by using the graph utility
MIKROZONASI INDEKS KERENTANAN SEISMIK BERDASARKAN ANALISIS MIKROTREMOR DI KECAMATAN ARJOSARI PACITAN JAWA TIMUR MICROZONATION OF SEISMIC VULNERABILITY INDEX BASED ON MICROTREMOR ANALYSIS IN ARJOSARI SUBDISTRICT PACITAN EAST JAVA Nining Pratiwi; Nugroho Budi Wibowo; Yosaphat Sumardi
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 5, No 5 (2016): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

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Abstract

AbstrakPenelitian ini bertujuan untuk mengetahui karakteristik mikrotremor, nilai indeks kerentanan seismik, dan mikrozonasi indeks kerentanan seismik di Kecamatan Arjosari. Data mikrotremor dianalisis menggunakan Fast Fourier Transform (FFT) radix-64, penghalusan data dengan Konno-Ohmachi dan Horizontal to Vertical Spectral Ratio (HVSR). Hasil studi ini menunjukkan bahwa karakteristik mikrotremor di Kecamatan Arjosari dengan frekuensi predominan antara 1,76-14,88 Hz, faktor amplifikasi antara 0,224-11,73, nilai ketebalan lapisan sedimen antara 9,94-103 m, nilai kecepatan gelombang geser permukaan tanah sampai kedalaman 30 m antara 353,174-760 m/s, dan nilai kecepatan geser batuan dasar antara 170,544-7124,474 m/s. Nilai indeks kerentanan seismik di Kecamatan Arjosari adalah 1,291 10-7 sampai 1,008 10-5 (s2/cm). Mikrozonasi indeks kerentanan seismik dengan nilai tinggi menyebar di Desa Mangunharjo, Desa Jatimalang, Desa Sedayu dan Desa Borang sedangkan nilai rendah menyebar di Desa Mlati, Desa Temon, Desa Karangrejo, DesaKata Kunci : Indeks Kerentanan Seismik, Horizontal to Vertical Spectral Ratio, Mikrotremor, Arjosari.AbstractThe aims of this study are to know the microtremor characteristic, the seismic vulnerability index, and its mikrozonation in Arjosari Subdistrict. The microtremor data were analyzed using Fast Fourier Transform (FFT) radix-64, then they smoothed by using Konno-Ohmachi Equation, and Horizontal to Vertical Spectral Ratio (HVSR). The result shows that the microtremor characteristic in Arjosari Subdistrict with predominant frequency between 1.76-14.88 Hz, the amplification factor between 0.224-11.73, the sediment thickness between 9.94-103.261 m, the surface shear velocity ( ) between 353.174-760 m/s, and bedrock shear velocity between 170.544-7124.474 m/s. The vulnerability index in Arjosari Subdistrict between 1.291 10-7 to 1.008 10-5 (s2/cm). High seismic vulnerability index microzonation spread in Mangunharjo, Jatimalang, Sedayu and Borang village. The low value spread in Mlati, Temon, Karangrejo, Kedungbendo, Gembong, Gayuhan, Gegeran, Gunungsari, and Pagutan Village.Key Words : Seismic Vulnerability Index, Horizontal to Vertical Spectral Ratio, Microtremor, Arjosari.
Interpretasi Struktur Bawah Tanah pada Sistem Sungai Bribin dengan Metode Geo Khafidh Nur Aziz; Yosaphat Sumardi; Denny Darmawan; Nugroho Budi Wibowo
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 6, No 01 (2016): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v6i01.1796

Abstract

This research was aimed to determine the distribution pattern of magnetic field anomaly and to identify the lithology of underground structure in Bribin Karst using geomagnetic method. Research location was Semanu Sub-district, Gunungkidul Regency at UTM coordinate of 464061 mT-464929 mT and 9111097 mU-9111970 mU. The data were taken using G-5 Proton Precession Magnetometer (PPM) by looping method. The result showed that the distribution pattern of the magnetic field anomaly in Karst Bribin has value of 330 nT - 530 nT and anomaly values reflecting the system of Bribin River has value of 400 nT-460 nT. The lithology of underground structure in Karst Bribin has susceptibility value of -0.069 (in SI) - 0.0661 (in SI) with depth 200 m associated with limestone, tuff, gypsum, rock salt, and minerals calcite and anhydrite and the lithology associated with the system of Bribin River has susceptibility value -0.069 (in SI) associated with gypsum, rock salt, and minerals anhydrite.
Co-Authors Bima Caraka Putra Denny Darmawan Khafidh Nur Aziz Kholidah Hasyim Nining Pratiwi Nugroho Budi Wibowo Yohannes Sardjono