Authorised Indian Distributor
Saxsons Group
New Delhi, India · Since 1997
Neutron Dose Rate MeterAmbient H*(10) Neutron Monitor
Compact ambient neutron dose-equivalent-rate monitor H*(10) for cyclotron facilities, PET production centres and particle accelerator workplaces. Two adjustable alarm levels with optical and audible indication; autonomous local operation or full integration into the site RMS. Suitable for indoor and outdoor deployment under AERB radiation-safety expectations.
Key Features
- Measurement of ambient dose equivalent rate H*(10) in neutron radiation fields
- Designed for cyclotron facilities, PET production centres, particle accelerator workplaces, neutron calibration laboratories and spent-fuel storage
- Two adjustable alarm levels — each with optical and audible indication for local-warning use
- Autonomous local operation: the unit functions standalone with on-board display and alarm outputs
- Or full integration into the RMS server: dose-rate data, alarm states and event log streamed to the central monitoring system
All Features
- Measurement of ambient dose equivalent rate H*(10) in neutron radiation fields
- Designed for cyclotron facilities, PET production centres, particle accelerator workplaces, neutron calibration laboratories and spent-fuel storage
- Two adjustable alarm levels — each with optical and audible indication for local-warning use
- Autonomous local operation: the unit functions standalone with on-board display and alarm outputs
- Or full integration into the RMS server: dose-rate data, alarm states and event log streamed to the central monitoring system
- High reliability and durability — engineered for continuous unattended operation in vault-side cyclotron and bunker environments
- Suitable for outdoor and indoor deployment — IP-rated enclosure for harsh-environment installation
- RS-485 and Ethernet host interfaces — fits existing site monitoring backbones without rework
- Relay outputs for warning lights, sirens and host system handshake
- Adjustable alarm levels stored on the device — survives a power cycle and a host disconnect
- AERB-compliant deployment paperwork supplied with each consignment
- Datasheet, calibration certificate and commissioning documentation included
Technical Specifications
| Measured quantity | Ambient dose equivalent rate H*(10) for neutron radiation |
| Detector type | Neutron-sensitive detector head (datasheet specifies model) |
| Operating mode | Autonomous local monitor with on-board display and alarms, or integrated into the RMS server |
| Alarm levels | Two adjustable levels per channel; optical + audible indication |
| Host interfaces | RS-485 + Ethernet (per the manufacturer datasheet) |
| Operating environment | Indoor and outdoor; IP-rated enclosure for vault-side and bunker installation |
| Power | Mains + optional UPS; tolerant of brief outages without alarm-state loss |
| Compliance framework | AERB radiation-safety expectations for cyclotron and PET facility installations |
| AERB status | Type-test paperwork supplied; site-level installation per the radiation-safety officer |
| Documentation | Datasheet, calibration certificate, commissioning records, AERB compliance paperwork |
Applications
Neutron field monitoring — cyclotron vault to spent-fuel store
Cyclotron vault entry
Neutron dose-rate monitor at the vault interlock door confirms the field has dropped to safe levels before personnel entry. Two alarm thresholds gate the maintenance entry sequence: clear-for-entry and quarantine-on-rising-field.
PET production hot lab adjacency
PET tracer production neighbouring the cyclotron vault accumulates a neutron field during irradiation runs. The Neutron Monitor documents the workplace neutron exposure for radiopharmacy staff and feeds the RMS personnel-dose record.
Particle accelerator workplace
Heavy-ion and high-energy accelerator workplaces produce mixed gamma-neutron fields. The Neutron Monitor covers the neutron channel; pair with the area gamma monitor for the complete field characterisation at the workplace.
Spent-fuel and waste storage
Spent-fuel pools and high-level waste stores produce significant neutron flux. Continuous monitoring with alarm thresholds is required under most national radiation-protection frameworks.
Neutron calibration laboratory
Calibration laboratories producing reference neutron fields use the Neutron Monitor as a workplace safety monitor — distinct from the metrology reference instrument under calibration.
Cyclotron commissioning
During cyclotron commissioning, baseline neutron field maps are generated by sweeping the area with Neutron Monitor instruments. The baseline becomes the comparison point for routine operational monitoring.
Why Neutron Dose Rate Meter?
Ambient dose equivalent rate H*(10) is the ICRP-defined operational quantity for area neutron monitoring. The Neutron Monitor reports directly in H*(10) so the field map maps onto workplace-dose limits without conversion factors that have to be defended at AERB inspection.
A small site can deploy a single Neutron Monitor as a standalone local alarm at the vault entry. A multi-monitor site can connect the same unit into the RMS server for centralised dose-rate trending and alarm management. The instrument is the same — the deployment scales with the site.
Cyclotron vaults, particle-accelerator workplaces and waste-storage stores are hostile environments — temperature swings, dust, occasional humidity. The Neutron Monitor enclosure is rated for indoor and outdoor unattended operation, so the install location is set by radiation physics, not by the instrument's environmental tolerance.
Catalogs & Resources
Manufacturer datasheet. Contact Saxsons for AERB documentation, calibration scheduling and India pricing.
Neutron Monitor
More for this product
Each card opens a focused post for a specific specialty — peer-reviewed evidence and clinical workflow, written for the persona you select.
FAQ
Neutron dose-rate meter — questions we hear from Indian cyclotron RSOs
Why cyclotron facilities need neutron monitoring on top of gamma, why H*(10) is the right reported quantity, where in the facility to install the monitors, and how alarm behaviour ties into the RMS server.
Q.Why does a cyclotron facility need neutron dose-rate monitoring on top of gamma monitoring?
A cyclotron accelerates protons or deuterons to produce F-18 through the (p,n) or (p,α) reaction on O-18 water. That nuclear reaction produces high fluxes of secondary neutrons during beam-on. Neutrons are hard to shield, biologically damaging out of proportion to their energy (radiation-weighting factor 5–20), and are invisible to a gamma monitor. Fixed neutron dose-rate monitoring around the cyclotron vault is what makes the neutron field visible to the RSO — and what AERB Regulatory Requirements for Medical Cyclotron Facility expect for the licensing dossier.
Q.Why H*(10) as the reported quantity?
H*(10) (ambient dose equivalent at 10 mm depth) is the ICRP-defined operational quantity for area neutron monitoring — the quantity that maps directly onto workplace dose limits without requiring per-detector conversion factors. Reporting in H*(10) means the neutron-field map goes straight into the dose-record dossier and can be compared like-for-like against the annual worker dose budget.
Q.Where in the cyclotron facility does the neutron monitor typically sit?
Vault-access door (highest-priority location — neutron field is highest during beam-on), corridor and maze positions leading into the vault, adjacent occupied rooms (worker station, control room, radiopharmacy dispensing area). One monitor per critical measurement point; each feeds the RMS server for facility-wide neutron-field visibility.
Q.What alarm behaviour does the neutron monitor support?
Configurable H*(10) alarm threshold with local audible + visible alarm at the monitor location; alarm signal routed to the RMS server and to any corridor RDU-02 displays that aggregate this monitor. Alarm acknowledgement is logged for the audit trail. High threshold typically set at the AERB-derived controlled-area boundary limit.
Q.How is the neutron monitor supplied and installed in India?
Distributed across India by Saxsons Group. Supply covers the monitor, calibration certificate against reference neutron source, RMS integration, site-fit assessment against the cyclotron vault layout, commissioning against AERB Regulatory Requirements for Medical Cyclotron Facility and India commissioning support.
Neutron Dose Rate Meter supplier in India — Saxsons Group
Saxsons Group has supplied cyclotron equipment to over 1,000 Indian hospitals since 1988. Every consignment of Neutron Dose Rate Meter ships with cold-chain logistics, AERB import documentation, CDSCO registration references and a Certificate of Analysis delivered before dispatch — the paperwork your radiation-safety and procurement teams need, pre-assembled.
- Nationwide delivery footprint — every metro and tier-2 city in India, scheduled to your treatment / procedure calendar.
- AERB & CDSCO documentation — import licence, radiation-safety paperwork and RSO briefing pre-assembled for the audit file.
- 40+ years in Indian oncology — long-standing supply relationships with AIIMS, Tata Memorial, and hundreds of tertiary-care centres.
- Single point of accountability — one purchase order, one delivery contact, one after-sales team across the whole product family.
Also supplied by Saxsons Group across India
Add a neutron channel to your cyclotron / PET facility RMS
Contact Saxsons Group for neutron dose-rate monitor supply, AERB compliance paperwork, site survey and India installation support.