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Journal : Jurnal Fisika Unand

Evaluasi Hubungan Deviasi dan Energi terhadap Kestabilan Keluaran Berkas Elektron pada Pesawat LINAC Varian TrueBeam Sakinah; Wardhani, Primasari Cahya; Arie Chintya Martania; Nur Aini Fauziyah; Wahyu Dwi Lestari
Jurnal Fisika Unand Vol 15 No 1 (2026)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.15.1.1-8.2026

Abstract

This study aims to analyze the relationship between electron beam energy and electric charge, as well as the relationship between deviation and energy, to evaluate the output stability of the LINAC machine. Measurements were conducted at BPAFK Surabaya using a Varian TrueBeam LINAC at Hospital X, East Java. The study employed electron energies of 6 MeV, 9 MeV, 12 MeV, 16 MeV, and 18 MeV. The procedure included filling the water phantom with distilled water, setting the source-to-surface distance (SSD) to 100 cm with a radiation field size of 10 cm × 10 cm, and connecting the detector to the electrometer outside the LINAC room. Calibration was performed at the reference depth (Zref) based on the R₅₀ value from the Percentage Depth Dose (PDD) table according to the IAEA TRS-398 standard. Measurements were repeated five times with voltage variations of +300 V, −300 V, and +75 V. The results showed that the maximum electric charge occurred at 12 MeV at a depth of 2.96 cm, while the highest deviation, −0.15%, was observed at 16 MeV—still within the ±2% tolerance limit. Therefore, the LINAC machine is considered stable and suitable for use in radiotherapy.
Co-Authors Adnyono, Ndaru Ahmad Khairul Faizin Ahmad Khairun Faizin Alfattama, Lona Chinsia Althafiansyah, Rafif Zaidan Arie Chintya Martania Arif Hidayat, Muhammad Aryananda, Rangga Laksana Atika Andini Azizullah, Dana Afif Bayuseno, A P Danaryanto, A T Dera, Nurmala Santi Dewi, Deshinta Arrova Dwi Ari Suryaningrum, Dwi Ari Eva Yulia Puspaningrum Faiza, Linda Ziyadatul Faizin, Ahmad Khairul Fara Disa Durry Fauzan Raka Mawandi Febriansyah, Rahmad Ady Ferdi Kurniawan Fikri, Kemas Achmad Firmansah, Achmad Robi Ghozali, Achmad Imam Harya, Gyska Indah Humairah, Sayyidah I Gede Susrama Mas Diyasa Ika Nawang Puspitawati Ikhsanudin, Zaky Ishak, Sahional Ismail, R Issafira, Radissa Dzaky Jamari, J Kilo, Faisal Kurniawan, Ferdi L.Urip Widodo, Yohandrik Novel Karaman Lestari, Mufida Diah Luluk Edahwati Luluk Edahwati Luluk edahwati Luluk Edahwati Mahameru, Rolland D.K. Mahameru, Rolland Darin Khalifah Mahmudah, Imam Maulana, Hendra Mawandi, F.R. Mawandi, Fauzan Raka Mirnanda, D. Mirnanda, Dwiky Mr. Sutiyono Mukti, Abdi Satryo Ndaru Adyono Ndaru Adyono Ndaru Adyono, Ndaru Nikmah, Ulin Novel Karaman Nugroho, A Nunung Lusiana Margawati Nur Aini Fauziyah Nurrokhim, F.H.R. Nurrokhim, Firmansyah Hafizh Rizal Nuryananda, Praja Firdaus Pilargenta , Higan Prayoga, Adimas Dwi Primasari Cahya Wardhani Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Rosyadi, Mochammad Wildan Rosyadi, Mochammad Willdan Rosyadi, Willdan Safitri, P.D. Safitri, Puspa Dinda Sakinah Sanjaya, Kadek Heri Sari, Tria Puspa Suares, Reza Mardiansah Sutiyono Talango, Novriyanti Tjahjono, Jojok Dwirido Tria Puspa Sari Tyas Martika Anggriana Wahyu Caesarendra Widagda, Garda Dibya Widya Kusumaningsih Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Yanto, Agus Dwi Yudha, Dhian Satria Zein, Isynariyah