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Pudjorahardjo, Djoko Slamet and Suprapto, Suprapto and Darsono, Darsono and Anwar, Fuad and Warseno, Andy Saktia (2018)Simulation Study of Electron Beam Spot Size FromThermionic Electron Gun Using SIMION 8.1 Software. In: International Conference on Science and Applied Science (ICSAS) 2018, 12 Mei 2018, Surakarta, Indonesia.

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Abstract

This paper is deal with the result of simulation study of electrons beam spot size from thermionic electron gunusing SIMION 8.1 software. The thermionic electron gun is an important part of electron beam machine (EBM) currentlydeveloped at CAST BATAN Yogyakarta. It produces electrons beam which is dedicated for latex pre-vulcanizationprocess. The aim of simulation is to analyse the influence of electron gun parameters, such as electron beam intensity,extraction voltage and acceleration voltage, on electron beam spot size and to predict the optimum size of electron beam spot at titanium window of EBM. The simulation was carried out by varying beam intensity from 2 mA up to 20 mA,extraction voltage from 2 kV up to 12 kV and accelerating voltage from 150 kV up to 300 kV. From the result ofsimulation it is concluded that thermionic electron gun can produce linear divergent electrons beam trajectory. Thistrajectory is depend on the equipotential lines which are defined by electron gun parameters comprises electron beamintensity, extraction voltage and accelerating voltage. Based on the simulation result, the influence of electron gun parameters on electron beam spot diameter can be summarized as follows: the variation of electron beam intensity from 2 mA up to 20 mA at extraction voltage of 12 kV and accelerating voltage of 300 kV yields the variation of electron beam spot diameter from 5.35 cm up to 5.49 cm. The variation of extraction voltage from 2 kV up to 12 kV at accelerating voltage of 300 kV and electron beam intensity of 20 mA yields the decrease of electron beam spot diameterexponentially. The smallest diameters of electron beam spot are d1 = 5.41 cm and d2 = 5.44 cm at extraction voltage of 10 kV and 12 kV respectively. The variation of accelerating voltage from 150 kV up to 300 kV at extraction voltage of 12kV and electron beam intensity of 20 mA yields the decrease of electron beam spot diameter significantly. The smallestdiameters of electron beam spot are d1 = 5.41 cm and d2 = 5.42 cm at accelerating voltage of 300 kV and 275 kVrespectively. d1 and d2 are diameter of electron beam spot along y axis and x axis respectively.

Download this game from Microsoft Store for Windows 10, Windows 8.1, Windows 10 Mobile, Windows Phone 8.1, Windows Phone 8. See screenshots, read the. This paper is deal with the result of simulation study of electrons beam spot size from thermionic electron gun using SIMION 8.1 software. The thermionic electron gun is an important part of electron beam machine (EBM) currently developed at CAST BATAN Yogyakarta.

Item Type: Conference or Workshop Item (Paper)
Subjects:Isotop dan Radiasi > Produksi Isotop dan Sumber Radiasi > Akselerator
Divisions:Pusat Sains dan Teknologi Akselerator
Depositing User:USER PSTA BATAN
Date Deposited:26 Oct 2018 01:55
Last Modified:26 Oct 2018 01:55
URI:http://repo-nkm.batan.go.id/id/eprint/4025
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ACTS 8:9-119 But there was a certain man called Simon, who previously practiced sorcery in the city and astonished the people of Samaria, claiming that he was someone great, 10 to whom they all gave heed, from the least to the greatest, saying, “This man is the great power of God.” 11 And they heeded him because he had astonished them with his sorceries for a long time.

To whom did the Samaritans attribute Simon's powers?
'God' (Acts 8:10)

Were they right?
No, he 'practiced sorcery' (Acts 8:9), so Simon was a sorcerer, whose power comes from demons and Satan.

ACTS 8:1212 But when they believed Philip as he preached the things concerning the kingdom of God and the name of Jesus Christ, both men and women were baptized.

Why did they 'heed' (Acts 8:10) Simon?
'Because he had astonished them with his sorceries for a long time' (Acts 8:11).

Why did they 'believe' (Acts 8:12) Philip, and what does it affirm?
Because he 'he preached the things concerning the kingdom of God and the name of Jesus Christ' (Acts 8:12). The Gospel and the name of Jesus Christ overpowers even long-held demonic strongholds.

Could demonic powers be mistaken as Godly powers today?
Jesus warned in Matthew 24:24, 'For false christs and false prophets will rise and show great signs and wonders to deceive, if possible, even the elect.'

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How can demonic 'signs' be distinguished from Godly signs?
While both signs are supernatural, they are distinguishable by what they point to. Supernatural signs that point to, honor, serve and glorify Jesus are of God. Supernatural signs that point to, honor, serve or glorify anything or anyone else, including pastors, dead Christians, etc., are not of God.

ACTS 8:1313 Then Simon himself also believed; and when he was baptized he continued with Philip, and was amazed, seeing the miracles and signs which were done.

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What did Simon do as he 'continued with Philip' (Acts 8:13)?
He watched Philip 'and was amazed, seeing the miracles and signs which were done' (Acts 8:13).

What does Simon's amazement indicate?
His 'miracles' paled in comparison to God's miracles and signs which were done by Philip.

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