[en] Phase angle control type LPC-90HAN was implemented on the puller power supply controller for cyclotron ion source. This research aim is to obtain the puller power supply controller that is operated more easily, more practice, compact and can be improved for automation system. The experiment consists of DAC programming in Fx2424 Super PLC, RS-232 communication, measuring input and output of SCR and measuring the puller output voltage. The measurement result of the input and output of puller were obtained good enough proportionality and linearity with V_o_u_t = 17.867xV_i_n and R"2 = 0.9983. The test result of the SCR LPC-90HAN shows proportionality between its input and output voltage but not linear and obtained equation y = 4.898x"3 – 38.676x"2 + 128.58x + 15.23 with R"2 = 0.9947. The test result shows that the digital input data equal 24 will be obtained puller output voltage is 1000 DCV. At the digital input data equal 628 will be obtained puller output voltage is 3000 DCV. Overall, the experiment of puller power supply controller for ion source has worked well and SCR phase angle control can be implemented as variac in the puller power supply controller. (author)

[en] The application of X-ray radiography has been developed and it is already widely used in metal materials such as metal steel and carbon steel. This radiography using a source of radiation from X-ray machines. This research attempts to use the application of digital radiography X-ray source and use scanner Epson V700 positive films media for digitization results of conventional radiographic films on coral reefs. It has been testing radiography using Fuji film 100 to get the contrast medium, the sensitivity of the medium and image quality is good, Single Wall Single Image method , and using the media scanner films positive and X-ray sources, observation parameter are density radiographic film and the defect shape. Radiography uses Fuji film 100 to obtain a good contrast medium, good medium sensitivity and good quality image. Radiography of X-ray on coral reefs aims to find defects or discontinuities coral reefs such as porosity which would interfere with the determination of the age of the coral reefs. X-ray exposure time is 1 seconds for a thickness of 5.45 mm and 5.60 mm coral reefs by using a high voltage X-ray machine Rigaku of 130 kV. The result of the positive film scanner in the form of digital radiography that allows for the transfer of digital data or digital computerized data storage. The test results of radiographic on coral reefs with Single Wall Single Image method obtained radiographic film density parameter for Fuji film 100 on coral reefs No. 2 are 2.55; 2.53; 2.59 and on coral reefs No. 4 are 2.62; 2.65; 2.66, unsharpness geometric of radiographic results obtained 0.022 mm and 0.023 mm, sensitivity radiography are 1.648% and 1.604%. No defect found of Porosity that is significant. Status is acceptable for Fuji film 100, because the density of the film is in conformity with the standards referred to. Status of coral reefs No. 2 and No. 4 can be accepted, because it has conformed with the standards referred. (author)

[en] Separation process of heavy rare earth elements from xenotime ore had been done. A 100 mesh of xenotime ore was upgrade using water, sodium silicate and oleic acid in pH 9. Mixed of slurry by air blown in room temperature along 30 minutes. The middle of slurry xenotime was be separated, then dried and so added soda caustic, potassium carbonate and ammonium dihydrogen phosphate. The mix was be homogenized then leached in furnace to 700°C temperature along 4 hours. The frits of leaching product would be leached using 1200 mL volume of water that made oxidation by HCl onto pH 4 by agitated heated in 70°C temperature. The mix was filtered, then solid settled was be dried and then to processed again in water HCl acidified leaching alike before until pH 4 with minimized HCl added least 2 mL. The solid settled filled into 1000 mL of beker glass, added HCl viscous in 300 mL volume, hydrogen peroxide and BaCl_2/Na_2SO_4/Na_2S then heated to 100°C temperature. Let in room temperature then was filtrated. The solid settled as ThSO_4/ThS, RaSO_4/RaS. The filtrate to be settled using 15g (NH_4)_2CO_3 in 100 mL volume of water while mixed until the solution reached pH 2. The solid settled was be dried, then into the filtrate added 10 mL volume of formic acid. The solid settled of filtration was be dried. The solution of filtrate to be settled using (NH_4)_2CO_3 until pH 4. The solid settled was be filtered and dried. The filtrate was be settled using oxalic acid. The analysis of standard of oxide rare earth had been done using XRF Am"2"4"1 source. Result of these process got 100 mesh xenotime upgrade those leached in 700°C along 4 hours used (NH_4)H_2PO_4 so HRE total lifted up from 4.31 to 8.16%. Resulted of HRE oxide yield was 17.76% in pH 2. HRE oxide yield in pH 4 was 38.45%, and HRE oxide yield was 6.38% as oxalic compound, so the total HRE oxide yield was 62.59%. (author)

[en] The temperature control system on the reduction unit has been designed. The activities include: identification of the load, the manufacture of wiring systems, installation and functional test. Identification of the load to determine the voltage, current, power and number of phases needed by each load. Wiring instrument control system aims is to ease the work of the component installation. Function test of the system on the reduction unit is useful to understand the performance of temperature control system post design. The result of the design and function test temperature control system on the reduction unit shows that: the temperature control system can be operated safely to handle the main load and supporting load on reduction unit. The main load is heater in zone 1 to 3 with voltage between 212 to 221 Volts AC and currents from 20.6 to 23.3 Amperes AC and operating time 196 minutes is obtained at room temperature reductor 27 to 950 °C with a heat rate of 4.71 °C/minutes. Supporting the load is vacuum pump 3-phase 380 Volts 3.6 Amperes and emergency cooling pump current 0.5 Amperes voltage 221 Volt. (author)

[en] The functional test of scanning system for 300 keV/20 mA electron beam machine (EBM) has been carried out. The scanning system is a part of optic system for electron beam machine, that was used to scan electron beam after out from accelerator tube. The scanning system was consisted of a pairs of AC electromagnet and scanning horn. These test was carried out to know the magnetic field influence to scanning length of electron beam that out from scanning horn and electron beam distribution profile along EBM scanning window. Test results show that scanning magnetic field influenced to beam scanning length with electron beam distribution well along EBM scanning window at 5 to 55 cm of position. (author)

[en] Pump load calculations have been made which includes the volume of plasma vessel, the gas load and the channel conductivity. Gas loads consists of the release of gases (outgassing), permeation and leaks, while the channel conductivity includes the below, valves, Lbow and cross joint. The vacuum system design aims to obtain an efficient vacuum systems. The calculation result for rotary pump gas load = 7.33 x 10-2 torr liter/sec and turbo molecular pump = 4.8 × 10-5 torr liter/sec, viscous flow channel conductivity = 20.24 cm"3/sec and molecular flow = 295 cm"3/sec. The final vacuum is 1.25 × 10"-"6 Torr with an effective pumping speed of 24 m"3/h (DUO 20 rotary pump) and 665 liter/sec (turbo molecular HiPace® 700 M), and the pumping takes about 15 minutes. (author)

[en] Determination of radiation dose using Fricke dosimeter has been done. Determination of radiation was been done at gamma irradiator in PAIR-BATAN Jakarta and in the electron beam machine in PSTA-BATAN Yogyakarta. The purpose of radiation dosimeter Fricke is to determine the correlation between amount of concentration changes of the solution and the dose rate. Determination start from sample preparation, sample irradiation and calculation dose and then sample analysis. Result of this research is when the increase in solution so the increase in absorbance. Fricke absorbed dose irradiated with gamma irradiators and EBM are 4.13 kGy and 40.12 kGy respectively with an error on each measurement of 17.4% and 25.57%. (author)

[en] Research of radiation monitoring has been developing with needs, for example on industry. In this case, give a gap to research about radiation monitoring through data acquisition system. The purpose of this research is to produce radiation resource mapping data information that can be showed on web. The research method is processing data information that transmitting from robot tank by radio frequency. This consists of data position and voltage. Voltage information can be represented as radiation exposure. The result of this research is radiation resource mapping that showing on web. The contents of this web are data position and radiation exposure. Time computation that required from data reading to saving data on database is 1,001 second (s). (author)

[en] It has been done the groundwater sampling process of deep aquifer in Jakarta and surrounding areas for the analysis of environmental isotope "1"4C. Groundwater sampling was preceded by calculating the concentration of HCO_3- (bicarbonate ion) through titration in the field. The number of repetitions of sampling is determined by the concentration data of HCO_3- which obtained. The Repetition of this sampling will determine the acquisition of a solution of C_6H_6 (benzene) during the synthesis process benzene. In the field, the sampling is done by extracting of 60 liters of water to precipitate BaCO_3. The sampling process is repeated based on data from the bicarbonate ion concentration. The purpose of this study to determine the relationship between the concentration of HCO_3- to the weights C_6H_6 which obtained in the analysis of environmental isotope "1"4C and evaluate the number of repetitions of the sampling that should be done. Based on the analysis of titration in the field, shows that concentration HCO_3- ranged between 180 - 600 ppm with the acquisition of benzene between 1.84 to 4.5 grams. There is a strong relationship between the concentration of HCO_3- and C_6H_6 weights obtained in the process of synthesis of benzene with a correlation of about 0.900. This correlation can be improved by measuring the concentration of HCO_3- in advance in the laboratory tend to be more accurate than in the field. (author)

[en] Conceptual design of the control rod regulating system for plate type fuel of TRIGA-2000 reactor has been made. Conceptual design of the control rod regulating system for plate type fuel of TRIGA-2000 reactor was made with refer to study result of instrument and control system which is used in BATAN'S reactor. Conceptual design of the control rod regulating system for plate type fuel of TRIGA-2000 reactor consist of 4 segments that is control panel, translator, driver and display. Control panel is used for regulating, safety and display control rod, translator is used for signal processing from control panel, driver is used for driving control rod and display is used for display control rod level position. The translator was designed in 2 modes operation i.e operation by using PLC modules and IC TTL modules. These conceptual design can be used as one of reference of control rod regulating system detail design. (author)