- Patient QA
SNC125c™ SNC350p™ SNC600c™
Proven Reference Ion Chambers

Sun Nuclear reference class ionization chambers are optimal tools for scanning, field, and reference dosimetry measurements.
Meet Requirements
Properly QA your linac, in accordance with the reference class and dosimetry protocols of IEC 60731, AAPM TG-51, IAEA TRS-398 and DIN 6800-2.
Reliable & Accurate
Reference-class ion chambers are vented, waterproof and fully guarded. A white chamber body makes visualization easy during setup and relative to cross hairs and lasers.

SNC125c for Reference Class Dosimetry
With a design that reduces the convolution of high-dose gradient regions during profile and depth measurements, SNC125c meets IEC 60731 standards and more:
- Enhanced penumbra without loss of signal strength
- Optimized to work with Sun Nuclear water tanks
- Maintains ideal orientation during scans
- Sensitivity of a 0.125 cm3 chamber and penumbra closer to a micro-chamber
- kq factors available for TG-51, TRS398 and DIN 6800-2 calibrations

SNC350p for Electron Reference Dosimetry
This parallel-plate ion chamber is well-guarded to minimize perturbation effects for reference, field, and scanning dosimetry of therapeutic electron beams, and TDD/TPS commissioning and QA.
- Supports absolute or relative dose point measurements and PDD measurements
- Conforms to the design principles as stated by Dr. M. Roos et al. (IAEA TRS-381)
- Meets AAPM TG‑51 and IAEA TRS‑398 requirements for low‑energy beams (< 10MeV)
- Meets reference-class dosimeter standards of performance (IEC 60731), and may be used to cross calibrate field-class dosimeters

SNC600c for Photon and Electron Reference Dosimetry
SNC600c is a reference class dosimeter based on the classic Farmer Chamber design.
- Reference class performance (IEC 60731)
- Beam quality correction factors (kq) factors available for TG-51, TRS398 and DIN 6800-2 dosimetry protocols
- Classic Farmer Chamber design allows use in most slab phantoms
- White thimble provides easy setup verification
“I can do three times as much work in half the time with SunCHECK Machine.
The IC PROFILER integration is amazing. You put on a Quad Wedge and you’ve done four tests in one exposure — output, beam energy, profile constancy and MU.”
Curtis Baker, M.S., DABR,
Hamilton Medical Center

IC PROFILER & Daily QA 3 Integration
With direct connectivity from IC PROFILER and Daily QA 3 to SunCHECK:
- Efficiently complete daily, monthly and annual QA – no manual data entry required.
- Deliver the test beam, then accept or reject results on your terms and timeframe.

Proactive Machine Analysis
With SunCHECK Machine, get ahead of your team’s asset management and compliance needs. Data trending tracks parameters approaching out-of-tolerance levels.
Report templates demonstrate compliance with accreditation bodies, and centralized storage makes report retrieval easy.
Specifications
Active Volume (cm3) | 0.108 |
Active Length (mm) | 7.05 |
Active Diameter (mm) | 4.75 |
Sensitivity (nC/Gy) | 3.4 |
Wall Material | Paint 0.05 mm |
Electrode | 0.8 mm diameter aluminum |
Vented | To atmosphere through waterproof tubing |
Waterproofing | Viton tubing |
Polarizing Voltage | ±400V Max |
Cable Length (m) | 1.5 |
Cable Connector | TNC or BNC |
Active Volume (cm3) | 0.6 |
Active Length (mm) | 22.7 |
Active Diameter (mm) | 6.1 |
Sensitivity (nC/Gy) | 20 |
Wall Material (mm) | Paint 0.05 |
Energy Range | Co-60 – 25 MV |
Electrode (mm) | 1.1 diameter aluminum |
Vented | To atmosphere through waterproof tubing |
Waterproofing | Viton tubing |
Buildup Cap (mm) | 4.5 |
Polarizing Voltage | ±400V Max |
Length (m) | 1.5 |
Cable Connector | TNC or BNC |
Sensitive Volume (cm3) | 0.388 |
Entrance Window (mm) | 0.05 Paint |
Reference Point (mm) | 1.0 Below Window Surface |
Collection Volume Height (mm) | 2.0 |
Collector Diameter (mm) | 15.6 |
Guard Ring Width (mm) | 4.1 |
Polarity Effect | Within 1.000 (±) 0.01 |
Waterproofing | Viton tubing |
Max Dose Rate for (Gy/s) | |
≥ 99.5 % Saturation | 5.2 |
≥ 99.0 % Saturation | 10.4 |
Max Dose Per Pulse for (mGy) | |
≥ 99.5 % Saturation | 0.46 |
≥ 99.0 % Saturation | 0.92 |
Radiation Quality | Photons: Co-60 to 25 MV |
Field Size (mm) | Minimum: 40 x 40 |
Sensitive Volume (cm3) | 0.388 |
Entrance Window (mm) | 0.05 Paint |
