The Physics Study Program of Diponegoro University once again conducted a community service activity as a concrete manifestation of the Tri Dharma of Higher Education. This activity took place at SMA Negeri 2 Sukoharjo and involved lecturers as well as master’s and doctoral students from the Physics study program, particularly those focusing on Medical Physics.

The theme of this community service activity was “Application of Bolus in Radiotherapy and Radioprotection”, which represents an important application of physics in the medical field. This topic was chosen with the aim of providing new insights to 12th-grade high school students on how physics is not limited to theoretical concepts but also contributes directly to the healthcare sector, particularly in the treatment of cancer patients through radiation therapy.

The event began with welcoming remarks from the Principal of SMA Negeri 2 Sukoharjo and a supervising lecturer from Diponegoro University. The presentation session followed, starting with an explanation of bolus, a material used in radiotherapy to enhance the effectiveness of radiation dose absorption in target tissues. On this occasion, the students introduced a bolus made from Silicone Rubber, developed due to its flexibility, moldability, and dose equivalence with human tissue.

Lecturers, along with master’s and doctoral students from the Physics Department of UNDIP, explained the concept, function, and practical applications of bolus in clinical settings. In addition, participants were introduced to radioprotectors, which are materials used to protect healthy tissues from the side effects of radiation. This explanation was supported by examples of current research and the development of protective materials based on medical physics, conducted within the Physics Study Program at UNDIP.

The material was delivered in simple yet scientific language to ensure it was easily understood by the students. The 12th-grade students showed great enthusiasm, as reflected in the numerous questions and discussions that followed the presentation.

This activity served as an excellent opportunity to broaden the students’ perspectives on the potential for further studies in physics—particularly medical physics—which offers wide prospects in both the professional and academic worlds.

This activity was not limited to delivering material; it also served as a platform for meaningful interaction between students and the academic community of Diponegoro University. Both lecturers and students shared their experiences in university life, research, and the real-world applications of physics in various aspects of life—including health, energy, and technology.

Through this program, we aim to foster a positive synergy between Diponegoro University and SMA Negeri 2 Sukoharjo in advancing education and strengthening science literacy. The Physics Study Program at UNDIP remains committed to engaging with the community through educational, inspirational, and practical activities that provide broad benefits for the younger generation and society as a whole.