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All Journal Atom Indonesia Journal Jurnal Teknologi Reaktor Nuklir Tri Dasa Mega Jurnal Sains Materi Indonesia IPTEK The Journal for Technology and Science JURNAL FISIKA JFA (Jurnal Fisika dan Aplikasinya) Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Journal of Physics and Its Applications Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Teori dan Aplikasi Fisika SEMAR Progress in Social Development

Suharyana Suharyana

Physics Department, Faculty Of Mathematics And Natural Sciences, Sebelas Maret University Surakarta 57126, Indonesia

Author-ID : 389492

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences

Published : 19 Documents Claim Missing Document

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Sensitive Magnetic Field Sensor Based on Compensated Double Pick Up Coil Purnama, Budi; Suharyana, Suharyana; Sutomo, Artono Dwijo
IPTEK The Journal for Technology and Science Vol 23, No 1 (2012)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v23i1.16

Sensitive magnetic field sensor based on compensated double pick up coil has been developed. In order to confirm sensitifity of modified design, experiment carried out in two steps. Firstly, sensitify of conventional design is clarified. Here pick up coil as an active sensor and solenoid as an exitation coil is separately made. Secondly, modified sensor of integrated configuration is developed. Here for both active flux gate sensor and the exitation coil is made in same one core magnetic. Ferrite and standar foil soft magnetic is utilized in this experiment. In attention, frequency of 50 Hz is used for the whole experimens. A result showed that sensitvity of the integrated configuration sensor is much larger than conventional one. Then, power consume of the integrated flux gate sensor is much lower than conventional. Finally, a range measurement of the integrated configuration sensor can be realized less than 20 ïT which potential may perhaps sense a change of natural local magnetic field.

EFEK 57Fe DAN 119Sn MOSSBAUER PADA SENYAWA RFe6Sn6 (R=Y, Gd - Lu) Suharyana Suharyana; J. M. Cadogan; D. H. Ryan
Jurnal Sains Materi Indonesia Vol 3, No 2: FEBRUARI 2002
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

EFEK 57Fe DAN 119Sn MOSSBAUER PADA SENYAWA RFe6Sn6 (R=Y, Gd - Lu). Telah digunakan efek 57Fe dan 119Sn Mossbauer untuk mempelajari sifat - sifat magnetik senyawa Rl7e6Sn6 (R=Y, Gd-Lu). Semua senyawa memiliki medan magnetik superhalus pada inti 57Fe sebesar ~19,5 T pada suhu 295K dan kuadrupol spliting positif. Hasil eksperimen 119Sn Mossbauer menunjukkan bahwa hanya 1/3 posisi Sn yang menstransfer momen magnetik dari Fe tetangga terdekat, sedangkan 2/3 posisi Sn memiliki tetangga terdekat atom - atom Fe yang arah momen magnetiknya antiparalel sehingga tidak menstransfer medan magnetik superhalus.

Neutron Diffraction Study on the Magnetic Structure of Pr6Fe13Sn Suharyana Suharyana; J.M. Cadogan; A. Rianaris
Atom Indonesia Vol 36, No 1 (2010): April 2010
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/aij.2010.9

We have successfully prepared a Pr6Fe13Sn sample by employing argon arc melting. The crystal structure of the sample has been examined by an x-ray diffraction. The x-ray pattern reveals that the sample crystallize in the tetragonal Nd6Fe13Si structure type with space group I4/mcm. Neutron diffraction at 150K performed on a powder sample shows a collinear antiferromagnetic ordering of the Fe and Pr sublattices with the wave vector (0, 0, 1) and an Ip type magnetic lattice with anti-centering translation. The main axis of antiferromagnetism is restricted to the (0 0 1) plane. The average refined Fe moments at 150 K is (2.0±0.4) µB whereas the Pr moments are (2.1±0.4) and (1.9±0.4) µB for the 8f and 16l sites, respectively. Received: 20 November 2009; Revised: 3 April 2010; Accepted: 20 April 2010

Assessment of TMSR-500 Shutdown Capability A. Khakim; F. R. Firmanda; Y. Pramono; S Suharyana
Atom Indonesia Vol 48, No 1 (2022): April 2022
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/aij.2022.1145

The molten salt reactor (MSR) is a generation IV reactor with liquid fuel having nearly zero excess reactivity. Due to the very low excess reactivity, it requires a small number of control rods worth to shut down the reactor. However, as it operates at high temperatures, the core reactivity increases as the fuel temperature cools down during shutdown. In such a case, the control rods might not be able to keep the reactor at a subcritical state, and consequently, the fuel must be removed from the core for long-term shutdown into a fuel drain tank (FDT) below the core. This paper is intended to assess the shutdown capability of the first active shutdown system and fuel drain tank of ThorCon MSR by doing neutronic calculations with MCNP6. The results indicated that the control rods having reactivity worth ‑1.699 %dk/k are unable to maintain the core at a subcritical state as the core excess reactivity increases to +7.760 %dk/k when the fuel reaches room temperature. Therefore, the fuel must be drained to FDT to be cooled down and kept subcritical. Evaluation for various cases of FDT produced the highest multiplication factor of 0.57008 ± 0.00004 at the most conservative condition. The multiplication factor is well below the critical state of 1.0. The evaluations suggest that soon after the control rods shut the reactor down, the fuel has to be drained to FDT to maintain shutdown condition and dissipate the decay heat.

STUDI ORIENTASI MOMEN MAGNETIK ION Fe PADA SUHU 10K SENYAWA ErFe6Sn6 MENGGUNAKAN TEKNIK DIFRAKSI NEUTRON Suharyana Suharyana
Jurnal Sains Materi Indonesia Vol 5, No 1: OKTOBER 2003
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

STUDI ORIENTASI MOMEN MAGNETIK ION Fe PADA SUHU 10K SENYAWA ErFe6Sn6 MENGGUNAKAN TEKNIK DIFRAKSI NEUTRON. Teknik difraksi neutron telah digunakan untuk menetukan posisi atom di dalam sel satuan serta orientasi momen magnetik ion Fe senyawa ErFe6Sn6 pada suhu l0 K. Pola difraksi neutron dianalisis menggunakan metode Rietveld GSAS. Hasil analisis menunjukkan bahwa senyawa ErFe6Sn6 memiliki struktur kristal ortorombik dengan grup ruang Cmcm tipe ErFe6Sn6. Orientasi momen magnetik subkisi Fe bersifat antiferomagnetik mengarah ke sumbu a kristal ortorombik dengan grup ruang magnetik Cpmcccmc. Semua ion Fe memiliki momen magnetik sebesar (2,3±0,2)mB.

Kajian Simulasi Mikromagnetik: Ketergantungan Medan Koersif dengan Besaran Intrinsik Nano-Dot Magnetik dengan Anisotropi Tegak Lurus Budi Purnama; Ismail Ismail; Suharyana Suharyana
Jurnal Fisika dan Aplikasinya Vol 9, No 1 (2013)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Kajian simulasi mikromagnetik magnetisasi reversal pada nano-dot magnetik dengan anisotropi tegak lurus telah dilakukan dengan menyelesaikan persamaan Landau-Lifshitz-Gilbert. Model yang disimulasikan nano-dot bahan magnetik pada unit sel Heat Assisted Magnetic Recording (HAMR) dengan dimensi 50 nm × 50 nm × 20 nm, 4MS = 2500 gauss, TC = 373 K dan konstanta anisotropi K? = 5.105 erg/cm3. Simulasi ini dilakukan untuk mengetahui faktor-faktor fisis yang berpengaruh pada koersifitas dari pengamatan proses magnetisasi reversal. Hasil simulasi menunjukkan medan koersif meningkat sebesar 18% dengan penurunan redaman Gilbert dari = 1 hingga = 0,3. Akhirnya, peningkatan medan koesif juga teramati sebesar 32,7% dengan penurunan konstanta exchange stiffness dari A = 1.10−6 erg/cm hingga A = 1.10−7 erg/cm.

Early introduction of science and technology through optimizing the use of Science Props media for MI Muhammadiyah Wonorejo students Mohtar Yunianto; Suparmi Suparmi; Cari Cari; Fuad Anwar; Suharyana Suharyana; Darmanto Darmanto
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 6 No. 1 (2023): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35568/abdimas.v6i1.2725

Learning science and technology to children so far by telling stories so that children are easily bored, and as a result, children lack understanding of science and technology learning. Efforts in introducing science and technology to early childhood have been made to minimize this incident. The activity is in the form of training in using electrical and magnetic props for MI Muhammadiyah Wonorejo students. The activity begins with a pretest to determine students' initial ability, followed by introducing the concept of theory and practice of props in groups, electrical material related to series and parallel circuits for magnetism related to static magnets and dynamic magnets. The result is that there is more interest from students to learn, and there is an increase in student understanding of magnetic electricity material and can use of teaching aids.

ESTIMATION OF NEUTRON AND PROMPT PHOTON DOSE RATE DISTRIBUTION IN TMSR-500 USING MCNP6 Luqman Satria Pradana; Utari Utari; Suharyana Suharyana; Azizul Khakim
JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA Vol 24, No 3 (2022): October 2022
Publisher : Pusat Teknologi Dan Keselamatan Reaktor Nuklir (PTKRN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/tdm.2022.24.3.6692

Thorium Molten Salt Reactor-500 (TMSR-500), one of the Generation IV nuclear reactors, is designed by Thorcon International, Pte. Ltd, which is projected to be built in Indonesia. The reactor core is radially surrounded by B4C shielding, but not the upper part. As the silo hall sits above the reactor core and is accessible by reactor personnel, the dose rate must be calculated in the area to ensure the workers receive an annual dose below the acceptable limit. The dose rate from neutrons and photons as the result of fission reactions are the only sources to be calculated in this research, without taking the source from fission products into account. This research aims to obtain the dose rate distribution of neutrons and prompt photons using Monte Carlo code MCNP6. The reactor was assumed to operate at a nominal thermal power of 557 MWth. Dose rate calculation was obtained from flux Tally F4 and converted into dose rate using Dose Energy Dose Function (DEDF) factor. Conversion factors of flux to the dose were based on ICRP-21 and ANSI/ANS-6.1.1 1977. The result of the calculations showed that the distribution of neutron and prompt photon fluxes does not reach the silo hall.

Analisis Distribusi Dosis Proton pada Terapi Proton untuk Kanker Glioblastoma Menggunakan Software MCNP6 Ajeng Dewi Sekar Taji Kusumo Wardani, Raden; Suharyana, Suharyana
Jurnal Fisika Vol 13, No 1 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v13i1.46917

Software MCNP6 digunakan dalam simulasi pemodelan pada terapi proton untuk pengobatan kanker otak glioblastoma. Pada simulasi ini digunakan geometri phantom kepala leher, dengan bentuk daerah penyinaran pencil beam scanning rubik 3×3×3 dan panjang rusuk 1,2cm yang terbagi menjadi 27 kubikel. Digunakan 3 sumber radiasi proton yang diarahkan ke setiap pusat kubikel sel kanker dengan tiga variasi energi, yaitu (113; 112,9; dan 108,5) MeV. Dari hasil simulasi diperoleh sebaran dosis yang merata pada setiap kubikel sebesar (1,400±0,005) MeV/gram per proton dengan tingkat isodosis 94% dan nilai selisih relatif pada setiap kubikel paling besar 16,59%. Organ sehat yang memperoleh distribusi dosis proton dan partikel sekunder paling besar adalah otak, dengan dosis total sebesar (0,386±0,001) MeV/gram per proton. Dari distribusi dosis pada sel kanker, diperoleh waktu penyinaran untuk mematikan sel kanker glioblastoma adalah (33,838±0,183) sekon dengan arus proton sebesar 1 nA.Kata Kunci: Glioblastoma, MCNP6, partikel sekunder, terapi proton.

Optimization of Energy for Proton Therapy with Pencil Beam Collimator Model in Craniopharyngioma Tumor Using MCNP6 Code Putri, Weni Antari; Riyatun, Riyatun; Darmanto, Darmanto; Suharyana, Suharyana; Arianto, Fajar
Journal of Physics and Its Applications Vol 6, No 1 (2023): November 2023
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v6i1.18100

Computational simulations of proton therapy with a pencil beam collimator for craniopharyngioma have been done using MCNP6. A pencil beam was radiated towards cube shaped tumor cells in size 1.2 cm, located at a 5.4 cm depth from the surface of the scalp. A 0.1 cm pencil beam was radiated from the left 19.6 cm from the scalp. The cube of tumor cell is divided into the front layer, middle layer, and back layer. Each layer of the tumor cell is divided into 9 cubicles, thus there are 27 cubicles. Using various energy from 108 MeV to 115 MeV and various intensity of energy for each irradiation, it produces the dose for each cubicle in unit MeV/gram per proton. The best isodoses occurred in 5 variations of energy which is 108.2; 111.2; 113.4; 114.7 and 115 MeV. The healthy organ that received the largest dose of the proton is the brain, it is (7.38±0.01)×10-2 MeV/gram per proton, or only 0.412% compared to the tumor cell dose.

Co-Authors A Suparmi A. Khakim A. Rianaris Afifah, S.A.P.S. Ajeng Dewi Sekar Taji Kusumo Wardani, Raden Andina Riswandari Zulhiznaniyah Anwar, Fuad Arrozaqi, M I M Artono Dwijo Sutomo Azizul Khakim Azizul Khakim, Azizul Budi Purnama Cari Cari Cari Cari Cari, Cari Choiriyah, S D. H. Ryan Dadtun, Yusana Sasanti Darmanto Darmanto Darmanto Darmanto Darmanto Darmanto Darmarastri, Hayu Adi F. R. Firmanda Fajar Arianto Fuad Anwar, Fuad Hayati, Widia Ike Septiani Prastika Ismail Ismail J. M. Cadogan J.M. Cadogan Khoirunnisa, Asma Fadhila Kusumandari, Kusumandari Luqman Satria Pradana Maimunah Maimunah Mohtar Yunianto Mohtar Yunianto Mohtar Yunianto, Mohtar Muhtarom Muhtarom Muhtarom Nining Hargiani Oki Dewi Pamungkas Putri, Weni Antari Riyatun Riyatun Riyatun Riyatun Riyatun Riyatun Riyatun Riyatun Riyatun Riyatun, Riyatun Riyatun, Riyatun Sabrina, N Sheila Agustina Soeparmi Soeparmi, Soeparmi Sudarno Sudarno Supariadi Supariadi Suparmi Suparmi Suparmi Suparmi Suparmi Suparmi Susanto Susanto Tundjung Wahadi Sutirto Tuti Dwi Setyaningsih Utari Utari Y. Pramono Yunia Dwie Nurchayanie

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