Linear Accelerator (LINAC) Installation: Step-by-Step Process and Timeline

The installation of a linear accelerator (LINAC) is the most critical and engineering-intensive phase of establishing a radiotherapy center. When properly planned, the system is ready to treat its first patient on schedule. Poor planning, however, can result in weeks of delays, additional costs, and licensing issues. In this guide, we cover every stage of a LINAC installation, its typical timeline, the factors affecting cost, and the most common mistakes.

What is LINAC installation and why is it so critical?

A linear accelerator is a medical device that generates high-energy X-rays or electron beams to treat tumors with millimeter-level precision. This level of accuracy requires the installation process to be carried out with the same degree of precision. Even a misalignment of just a few millimeters can compromise treatment accuracy. For this reason, installation must follow the manufacturer's (OEM) standards and be performed by certified personnel.

Pre-installation planning and site survey

Every successful installation begins with a detailed site survey. Bunker dimensions, floor load capacity, access routes, and existing infrastructure are evaluated. During this phase, the project plan is prepared, defining shielding calculations, electrical and cooling requirements, and the installation schedule.

Bunker and infrastructure preparation

Before the equipment arrives on site, the treatment room shielding must be completed, and the cooling water system, uninterruptible power supply (UPS), and cable pathways must be ready. Floor leveling, humidity, and temperature must all remain within the manufacturer's specified tolerances. Infrastructure deficiencies are the most common cause of installation delays and often result in the equipment remaining idle on site.

Mechanical installation

The gantry, treatment couch, multi-leaf collimator (MLC), and imaging arms are assembled according to the manufacturer's specifications. Transporting and aligning these heavy, precision-engineered components requires an experienced team and appropriate lifting equipment.

Commissioning, calibration, and safety testing

Once the mechanical installation is complete, the system is commissioned. Beam alignment, dosimetry calibration, and imaging verification are performed. Safety interlocks and protection systems are thoroughly tested to ensure the safety of both patients and staff.

Acceptance testing and clinical handover

Acceptance and performance testing confirm that the system meets both the manufacturer's specifications and clinical requirements. All documentation is completed, user and treatment planning training is provided, and the system is formally handed over to the clinical team.

How long does LINAC installation take?

A typical linear accelerator installation takes approximately 8 to 12 weeks, depending on site readiness and the system configuration. If the bunker and infrastructure are already prepared, the timeline can be significantly shorter. Incomplete infrastructure, on the other hand, can considerably extend the installation period.

Frequently Asked Questions

What infrastructure is required for LINAC installation?

A radiation-shielded bunker, an appropriate cooling water system, an uninterruptible power supply (UPS), climate control, and floor leveling within the manufacturer's tolerances are the essential requirements.

Who should perform the installation?

The installation should be carried out by technical teams certified by the manufacturer (for example, Varian Medical Systems). Otherwise, both the equipment warranty and clinical safety may be compromised.

Can a refurbished or pre-owned LINAC be installed?

Yes. A pre-owned LINAC can be safely relocated and reinstalled through a proper relocation process. Once it successfully passes acceptance testing, it can be commissioned for clinical use.

At RF Oncology, our Varian Medical Systems-certified team has completed an average of 50 equipment installations per year across 21 countries since 2008. If you would like to receive a quotation for radiotherapy equipment installation, please contact us.