9 research outputs found
FABRIKASI DETEKTOR PARTIKEL ALPHA MENGGUNAKAN SEMIKONDUKTOR SILIKON TIPE P
No full textABSTRAKFABRIKASI DETEKTOR PARTIKEL ALPHA MENGGUNAKAN SEMIKONDUKTOR SILIKON TIPE P, Pada kegiatan yang lalu telah dilakukan pembuatan detektor tipe gas isian. Radiasi nuklir yang dideteksi adalah alpha, beta, dan gamma. Pada kegiatan kali ini dilakukan penelitian untuk membuat detektor nuklir surface barrier dengan bahan semi konduktor tipe p menggunakan lapisan tipis jendela emas (Au). Metode yang dilakukan adalah dengan cara membuat dua tipe sambungan yang berbeda. Sambungan pertama berupa lapisan doping Li ke dalam semikonduktor silikon. Tipe sambungan ke dua adalah antara LiSi dan Au. Kedua tipe sambungan dilakukan dengan metode RF Sputtering dan DC Magnetron Sputtering. Karakteristik detektor dilihat dari tegangan reverse bias, forward bias, nilai kapasitansi dan pulsa keluaran detektor. Kemudian dilakukan pengukuran daerah sensitif detektor atau daerah aktif. Berdasarkan hasil pengujian dapat dilihat bahwa detektor Au-SiLi yang dibuat telah berhasil dapat mengeluarkan spektrum energi partikel alpha, namun untuk kesempurnaan pembuatan detektor perlu dilakukan penelitian dan analisis lebih lanjutKata kunci : fabrikasi, detektor partikel alpha, semikonduktor silicon tipe p ABSTRACTFABRICATION OF ALPHA PARTICLE USED SILICON SEMICONDUCTOR TYPE P, In several years ago, nuclear radiation detector, specially gas filled detector was fabricated. It detected alpha, beta and gamma rays. Recently, the research is focusing to fabricate a surface barrier nuclear detector by using the semiconductor, specially p type coated by the gold (Au) window thin film. The method was done by developing two different types of junction. The first junction is silicon semiconductor layer doped with Li. The second one is junction between SiLi and Au. Both junctions are performed by using RF Sputtering and DC Magnetron Sputtering methods. The detector is characterized by evaluating reverse bias, forward bias, the capacitance and the detector output pulse. The sensitifity of detector field or the active detector field is then measured. Result shows that the Au-SiLi detector is success in emitting the alpha particles spectrum energy. Meanwhile, to increase the quality of the detector fabrication, more detail research and analysis need to be performed.Key words : fabrication, alpha particle detector, Silicon Semiconductor tipe
PERHITUNGAN KETEBALAN BAHAN KOMPOSIT KARET ALAM TIMBAL OKSIDA UNTUK PROTEKSI RADIASI SINAR - X 100 Kev
No full textThe Thickness Calculation Of Lead Oxide Natural Rubber Composite For X-Ray Rodietion Protection. The thickness calculation of lead oxide natural rubber composite for x-ray radiation protection has been done for 100 kev energy x-ray. The calculation is to obtain the thickness of reaietiou protection that was safe for environment or worker who works in radiation field. The calculation of absorption strength of lead oxide natural rubber composite is started by lead oxide composite 550 part per one hundred rubber (pphr) until 1000 part per one hundred rubber. the lead okside natural rubber composite thickness to be calculated is 2.5 mm. The result of calculation shows that the thickness of substance lead oxide natural rubber composite was safe for environment or worker who works in radiation field, if the 550 part per one Iwndrecl rubber lead oxide was mixed with natural rubber. The value of absorption strength on 550 pert per one hundred rubber is standart permitted. Perhitungan ketebalan Bahan Komposit Karet Alam Timbal Oksida Untuk Proteksi Radiasi Sinar-x 100 K
Pembuatan Detektor Neutron Termal Gas lsian 8F3
No full textAbstrak Detektor proporsional neutron termal dengan tekanan gas isian BF3 54 cmHg telah dibuat dilaboratorium instrumentasi dan Elektronika reaktor Atom Yogyakarla (BATAN). Sebagai katoda terbuat dari bahan aluminium dan anoda dari bahan kawat tungsten, masing-masing berdiameter 3 cm dan 0,3 mm. Pendeteksian neutron termal melalui reaksi sekunder yaitu reaksi neutron dengan inti atom Boron akan menghasilkan partikel α partikel ini .kemudian akan mengionisasi gas BF3.. Dengan adanya medan listrik yang sangat tinggi antara katoda dan anoda, maka pasangan ion yang terbentuk akan terlarik menuju elektroda yang bersesuaian.. Penumpukan pasangan ion pada elektroda akan menghasilkan pulsa keluaran detektor yang sebanding dengan energi neutron yang dating.. Dari pengujian karakteristik detektor neutron didapalkan efisiensi detektor sebesar 15, 54 %, dengan cacahan 6,41 x 1010 panjang Plateau 120 volt, dengan tegangan operasi terbaik 1285 volt.. Abstract A thermal neutron proportional detector containing BF-3 gas with pressure of 54 cm Hg has been made in the electronics and instrumentation laboratory at Yogyakarta nuclear research center (BATAN). The cathode and anode of the detector are made of aluminum and tungsten with 3 cm and 0,3 mm of diameter respectively. The thermal neutron detection is made through secondary reactions of neutron with boron nucleus that produce alpha particle for ionization of BF-3 gas. The high electric field between the cathode and the anode will attract those pairs of ions to their respective electrodes. The collected ion pairs at the cathode will produce output pulse detector which is equivalent to the in coming neutron energy. The neutron detector characteristics test shows that the detector efficiency is I 5..54 %. which counts 6.41 x 1010. Plateau length to I 20 volt, with optimal voltage operational is 1285 volt
Pembuatan Detektor Neutron Termal Gas Lsian 8F3
No full textA thermal neutron proportional detector containing BF-3 gas with pressure of 54 cm Hg has been made in the electronics and instrumentation laboratory at Yogyakarta nuclear research center (BATAN). The cathode and anode of the detector are made of aluminum and tungsten with 3 cm and 0,3 mm of diameter respectively. The thermal neutron detection is made through secondary reactions of neutron with boron nucleus that produce alpha particle for ionization of BF-3 gas. The high electric field between the cathode and the anode will attract those pairs of ions to their respective electrodes. The collected ion pairs at the cathode will produce output pulse detector which is equivalent to the in coming neutron energy. The neutron detector characteristics test shows that the detector efficiency is I 5..54 %. which counts 6.41 x 1010. Plateau length to I 20 volt, with optimal voltage operational is 1285 volt
RANCANG BANGUN DETEKTOR SOLID STATE
No full textMuch has been charged particle detector radiation detector made by the industry, especially those engaged in the development of detection equipment and components; The d~veloi>iiient and further research will be made solid state detector with silicon mat~iifll. : To be able to detect charged particles (radiation), required the processing of silicon material into the detector material. The method used to make silicon detector material is a lithium evaporations. Having formed an intrinsic region contactor installation process, and with testing Telah banyak detektor pendeteksi radiasi partikel bermuatan dibuat oleh industri, khususnya yang berkecimpung da/am pengembangan peralatan dan komponen deteksi,. Perkembangan dan penelitian lebih Ian jut akan dibuat detektor solid state dengan bahan silikon. Untuk dapat mendeteksi partikel bermuatan (radiasi), diperlukan pengolahan bahan silikon menjadi bahan de,tektor. Metode yang dipakai untuk menjadikan silikon menjadi bahan detektor adalah evaporasi lithium. Setelah terbentuk daerah intrinsik dilakukan proses pemasangan kontaktor, dilanjutkan dengan pengujian
SISTEM KELlSTRIKAN PEMBANGKIT LlSTRIK TENAGA NUKLIR
No full textSistem Kelistrikan Pembangkit Listrik Tenaga Nuklir. Pada sistem ini, daya listrik disuplai dari dua sistem transmisi luar yang pertama dari main transformer dan house service transformer dan kedua dari reserve transformer. Beban listrik pada sistem ini diklasifikasikan masing-masing sistem listrik dengan safety dan sistem listrik tanpa safety. Pada sistem bolak balik dengan safety dan tanpa safety masing-masing terdapat empat bus tegangan menengah 6,9 kV, dan empat bus sistem tegangan rendah 480 V. Pada sistem arus searah dengan safety terdiri empat sistem daya 125 V dan sistem tanpa safety terdiri dari dua sistem daya 125 V. Peralatan pada sistem kelistrikan ini turbin generator utama, GTG safety, GTG alternate, UPS dan sistem batere dll. Untuk melindungi peralatan dan bangunan lni terhadap ganggua sambaran langsung dan tidak langsung dipasang sistem pembumian netral dan penangkal petir dan untuk melindungi personil terhadap tegangan sentuh dipasang sistem pembumian perala tan dan pemumian stasiun . Sistem pembumian penangkal petir dihubungkan ke sistem pumbumian stasiun. The electrical system of nuclear power plant. In these system ,electrical power system is supplied from two -offsite transmission system resvectives main transformer and house service transformer; and reserve transformer. The electrical load in these system consist of safety electrical system and non - safety electrical system, The safety electrical and non safety electrical systems consist of four 6,9 k V AC medium voltage bus and 480 V AC low voltage bus system. The DC power system consist of four safety 125 V DC power system and the two non-safety 125 DC power systems. The equipment in these electrical system is main turbine-generator ;GTG safety; GTG alternate; uninterrupted power supply(UPS) and battery system. To protect electrical equipment and building to direct stroke and non direct stroke disturbances is installed netral grounding system and lightning protection and protection the personnel to touch-voltage is installed equipment grounding system and station grounding. The lightning arrester system is connected to station station grounding system
PERGESERAN REALISASI TINDAK KESANTUNAN DIREKTIF MEREDUKSI NILAI KESANTUNAN POSITIF DAN KARAKTER DI KALANGAN PESERTA DIDIK
No full textLanguage politeness, especially politeness of directive actions among elementary school students is the main foundation for instilling the character building of children. This directive politeness action has decreased over time in line with the century of global communication and computing. This study aims to describe the shift in the realization of directive politeness act (DPA) among elementary students with a Javanese cultural background. This research method takes the form of qualitative with a dual case study strategy. Sources of research data include all elementary school students and teachers in Surakarta and Yogyakarta. Data collection techniques are carried out by observing techniques actively involved, observing free involvement, and reinforced by FGD techniques. The research data in the form of speech from DPA elementary school students in conducting language activities in a school environment both in formal and non-formal settings. Data analysis was carried out using Leech model of politeness scale technique which was strengthened by politeness analysis with the principle of social, cultural harmony, the harmony of the Gunarwan and Prayitno models. The results of the study abstract that: (a) the realization of the DPA students experience a shift in line with the shifting of the time and context of the wearer, (b) the realization of DPA can reduce the positive politeness values and psychological characteristics of the students' character, (c) the realization of the student's DPA This digital trend tends to use direct and literal methods in line with the influence of the context of communication patterns and centuries of practical computing, (d) the taxonomic shift in the dominant DPA in the sub-TKD requires, (e) the DPA taxonomy begs parallel with its realization in the sub-DPA pleading, (f) the taxonomic shift in DPA invites the dominant in the sub-DPA to persuade, (g) the taxonomic shift in DPA advises the dominant sub-DPA to remind, (h) the taxonomic shift in DPA reprimands the dominant sub-DPA satire, (i) the taxonomy of DPA prohibits parallel with the realization of the sub-DPA prohibits, (j) the character of the DPA used by elementary students with a Javanese cultural background shifts in line with shifting understanding the values of language politeness and understanding of character among the wearer.</p
DESAIN PERANGKAT LUNAK DAN PEMODELAN SISTEM IRADIATOR SERBAGUNA
No full textSOFTWARE DESIGN AND MODELLING OF A MUL T/PURPOSE IRRADIA TOR SYSTEM. Software design and simulation model for a multi-purpose irradiator has been done. The studied irradiator consits of 19 carriers which move along a defined irradiation path where 9 stoppers are also located. These stoppers are used to control the movement of the carriers. Commands are sent from the stoppers in order to move a carrier along the irradiation path or to stop its movement. Mathematical model based on state machine method is applied for simulating the carriers' movement along the irradiation path. Based on this mathematical model, an algorithm is made and its corresponding interactive computer program will be developed using the standard graphical interface DESAIN PERANGKAT LUNAK DAN PEMODELAN SISTEM IRADIATOR SERBAGUNA Dilakukan desain perangkat lunak dan model simulasi sistem iradiator serbaguna. Sistem iradiator yang diteliti memiliki 19 carrier yang berjalan pada lintasan medan iradiasi di mana terdapat 9 stopper. Stopper ini berfungsi untuk mengendalikan gerakan seluruh carrier. Pada stopper terdapat mekamisme untuk memerintahkan carrier bergerak sepanjang segmen lintasan atau tetap diam. Metode state machine dipergunakan dalam pembuatan model matematis untuk menirukan mekanisme gerakan carrier pada lintasannya. Berdasarkan model ini maka akan dibangun algoritma dan kemudian perangkat lunak interaktif yang menggunakan antarmuka grafi
Rancang Bangun Attenuator 105 MHz-990 MHz
No full textPenggunaan Band Stop Filter pada Attenuator banyak digunakan karena rentang frekuensi attenuasi yang besar, serta perhitungan komponen yang tidak rumit. Penggunaan dioda pada rangkaian digunakan sebagai pemotong level tegangan pada sisi rangkaian pararel dan penahan arus DC pada sisi rangkaian serial. Model tipe π digunakan dengan cara pemberian arus pada baterai agar dapat memberikan level attenuasi yang besar. Rangkaian didalam attenuator ini menggunakan komponen pasif dimana komponen yang digunakan adalah sebuah dioda sebagai penyearah, kapasitor, resistor dan induktansi dan lain-lain. Metode pembuatan alat ini dengan cara merancang sebuah rangkaian yang telah ditentukan nilai komponennya. Di dalam pengujian alat ini digunakan sebuah spectrum analyzer atau function generator untuk melihat frekuensi gelombang radio yang sudah diredam
