S. Santosa
Center for Accelerator Science and Technology, National Nuclear Energy Agency, Jl. Babarsari, Yogyakarta 55281, Indonesia

Published : 5 Documents
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Conceptual Design Study of 13 MeV Proton Cyclotron Silakhuddin, Silakhuddin; Santosa, S.
Atom Indonesia Vol 38, No 1 (2012): April 2012
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (254.407 KB) | DOI: 10.17146/aij.2012.135

Abstract

A study to determine the conceptual design of a 13 MeV proton cyclotron for PET (Positron Emission Tomography) facility has been carried out. Based on studies on reactions of PET radioisotopes production, reaction cross-sections and some design references, a design of the proton cyclotron is proposed. The design criteria for the main components are decided using empirical and semitheoretical methods, as well as by referring to data regarding cyclotrons for PET production. The empirical method was carried out by using some data from operational experiences of BATAN cyclotron at Serpong, while the semitheoretical method was carried out by using the commonly used equations of cyclotron basic theory. The general layout of components and the main components, namely the ion source, the RF dees, the magnet, and the extractor are discussed. Based on the calculations and on the data used, the cyclotron is designed as a negative ion acceleration cyclotron with internal ion source. The designated proton energy and beam currents are 13 MeV and 50 µA. Its magnetic field is in the relativistic mode with sectors on the pole. The magnetic field intensity at the extraction radius is 12.745 kG and in the innermost radius is 12.571 kG. The magnetic poles consist of four sectors to make adequate space for components placement such as dees, ion source, extractor and beam probe. The dee angle is 430. The dee operates at 78 MHz on the fourth harmonic. A multifoil extractor is chosen to obtain an efficient operation.Received: 28 April 2011; Revised: 27 March 2012; Accepted: 30 April 2012
Simulation of Ion Source’s Control System on Cyclotron Using Programmable System on Chip (PSoC) Darmawan, R.S.; Santosa, S.; Silakhuddin, Silakhuddin
Atom Indonesia Vol 37, No 3 (2011): December 2011
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.888 KB) | DOI: 10.17146/aij.2011.78

Abstract

Cyclotron is an ion accelerator machine with spiral beam path. Ion source system is one of the main systems which its function is to produce ions that will be accelerated. In order to obtain maximum ion current, the ion source must be equipped with a control system that control mechanical system that will adjust the position of the ion source. The mechanical system able to make adjustment in three different axis, that is x, y and z axis. The mechanical system consists of a stepper motor and a set of gears. The control system using Programmable System on Chip (PSoC) utilizes its user module from the Random Sequence group, that is 8-bit Pseudo Random Sequence Generator (PRS8).For x and y axis, if the stepper motor rotate one rotation that means the support will be pushed or pulled 2.5 mm. While for z axis if the stepper motor rotate one rotation that means the support will be pushed or pulled 0.83 mm. The largest deviation of the stepper motor is 2° with error percentage is 1.09%. The mean value of step of the stepper motor is 2.03 step per second.Received: 20 November 2010; Revised: 07 October 2011; Accepted: 11 October 2011
Genetic Relatedness among Duku, Kokosan, and Pisitan in Indonesia Based on Random Amplified Polymorphic DNA Markers Hanum, Laila; Kasiamdari, Rina Sri; Santosa, S.; Rugayah, R.
Indonesian Journal of Biotechnology Vol 17, No 2 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijbiotech.7855

Abstract

Genetic relatedness among duku, kokosan, and pisitan from Indonesia were investigated using random amplified polymorphic DNA (RAPD) markers. Eleven primers (OPA-01, OPA-02, OPA-10, OPB-07, OPB-11, OPB-12, OPB-15, OPT-16, OPU-14, OPU-19, and OPU-20) were used for amplification and yielded a total of 174 DNA bands, of which 167 were polymorphic. Primer OPA-10, OPB-11, OPB-12, OPB-15, and OPU-19 produced all of the polymorphic DNA bands. The size of the amplified DNA fragments ranged from 41-1546 bp. The dendrogram separated into two clusters at a genetic similarity coefficient of 0.76. The cluster 1 consisted of subclusters duku and several pisitan (pisitan OKI, pisitan Sleman, pisitan Hatu, pisitan Punggur, and pisitan Tanjung), and cluster 2 consisted of subclusters kokosan and pisitan. In the kokosan subclusters, including duku Drendan. Dendrogram supported the determination of taxonomic status of duku, kokosan, and pisitan as one species, namely Lansium domesticum Corr. and its divided into two groups, namely L. domesticum ’duku group’ and L. domesticum ’pisitan-kokosan group’. Thus, RAPD analysis was useful tool for determining the genetic variation and the genetics relatedness among duku, kokosan, and pisitan in Indonesia.Key words: duku, kokosan, pisitan/langsat, genetic relatedness, RAPD
The Phylogenetic Relationship Among Varieties of Lansium domesticum Correa Based on ITS rDNA Sequences Hanum, Laila; Kasiamdari, Rina Sri; Santosa, S.; Rugayah, R.
Indonesian Journal of Biotechnology Vol 18, No 2 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijbiotech.7875

Abstract

Lansium domesticum Corr. with vernacular name in Indonesian duku has been reported containingtherapeutic bioactive compounds, and some of these compounds shown to be potent antitumor, anticancer,antimalaria, antimelanogenesis, antibacteria, and antimutagenic activities. This plant is commonly known asduku, kokosan and langsat by the local community in Indonesia. The morphological appearance of all varieties isnearly the same, and identifi cation of the varieties is very diffi cult for growers. Variation of DNA sequences ofthe ITS (Internal transcribed spacer) region can be used as a molecular character to determine the phylogeneticrelationship of different varieties of L. domesticum. The aims of this study were to determine taxonomy status ofduku, kokosan, and langsat, also phylogenetic relationship among varieties of L. domesticum based on ITS rDNAsequencing. DNA was isolated from leaves of plant and then amplifi ed using F1 and R1 primers. Nucleotidesequences were identifi ed using Sequence Scanner Software Programm version 1.0, nucleotide sequences from18S, ITS1, 5.8S, ITS2 and 26S region, that has been mergered using EditSeq and SegMan in software Suite forSequence Analysis DNASTAR Lasergene DM version 3.0.25. The results of study showed that DNA fragmentsranging in size from 782-810 bp. Different pattern of DNA fragments indicated polymorphism among duku,kokosan, and langsat. Based on the results of the ITS rDNA sequencing and phylogenetic tree analysis. Itwas determined that Lansium and Aglaia are a separated genus with the similarity index value of 0.98. Duku,kokosan and langsat were divided into two cluster, namely cluster kokosan-langsat and cluster duku with thesimilarity index value of 0.996. Keywords : Phylogenetic relationship, ITS region, L. domesticum, duku, kokosan, langsat
GAYA SÉNGGOL CUCU S. SETIAWATI DALAM PENYAJIAN SEKAR KAPASINDÉNAN Anggana, Rina Dewi; Santosa, S.
Gelar : Jurnal Seni Budaya Vol 13, No 1 (2015)
Publisher : Gelar : Jurnal Seni Budaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The style senggol of a pasinden can be shown through a special song performance as a form of creativitythrough the development of the main melody or basic melody that is standard or not standard with a certainreureueus (ornamentation) technique supported by musical reference and self-potency. The journal is arrangedby using qualitative research method and musical approach that is more comparative in order to compare thesenggol of Cucu S. Setiawati with the senggol of Yoyoh S. Asih and Neni Hayati in the presentation of sekarkepasindenan entitled Kastawa, especially analyze about the form and the style of Cucu S. Setiawati’stypical senggol. By transcription and study of melody plot belongs to the song Kastawa presented by thethree pasinden, it can be concluded that the form of senggol Cucu S. Setiawati is different from the otherpasinden compared. The characteristic of Cucu S. Setiawati can be seen from the development of melodyand the use of reureueus technique based on her self-potency. She tends to confine herself in the presentationand it can be found in the using of the less and simple tone values and legato. The laras (barrel) used byCucu S. Setiawati is more various, laras rotation tends to be done at the end of song especially at matra 3-4 or at the last bait of song. Her typical Senggol also can be seen through the using of certain melodies whenshe faces nada kenongan and goongan, when nada is wider and its reach is higher. From the side of vocaltechnique, she uses masiep sora technique which is not used by the pasinden compared.Keywords: style, sénggol, sekar kapasindénan, Kastawa, Cucu S. Setiawati