Description
The IBA SM128V is a high-channel-density signal conditioning module engineered for precision measurement in particle accelerator and nuclear research facilities. Designed by IBA Dosimetry, this specialized unit provides 128 isolated voltage input channels with nanovolt-level resolution, enabling real-time beam current monitoring, radiation dose mapping, and superconducting magnet control in large-scale physics experiments. The module employs distributed sigma-delta ADC technology with simultaneous sampling across all channels, eliminating phase skew errors during synchrotron pulse measurements. Its active magnetic field compensation neutralizes interference from adjacent equipment up to 50mT – critical for cyclotron installations. The IBA SM128V integrates seamlessly with IBA’s ibaPDA platform via deterministic fiber-optic links, supporting acquisition rates to 100 kS/s per channel while maintaining 24-bit effective resolution. For radiation-hardened environments, its boron-carbide shielded components withstand neutron fluence to 10¹⁴ n/cm² without signal degradation. With hot-pluggable front connectors and automatic baseline correction, the IBA SM128V reduces beamline instrumentation complexity by 70% compared to discrete solutions.

IBA SM128V
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | IBA SM128V |
| Manufacturer | IBA Dosimetry |
| Product Type | Radiation-Hardened Measurement Module |
| Input Channels | 128 (Voltage, Differential) |
| Input Range | ±10V (User-Selectable Ranges) |
| Resolution | 24-bit Effective (18-bit HW) |
| Max Sample Rate | 100 kS/s (Aggregate 12.8 MS/s) |
| Isolation | 500V Channel-to-Channel |
| CMRR | >140 dB @ 60Hz |
| Neutron Tolerance | 10¹⁴ n/cm² (1 MeV eq.) |
| Operating Temperature | -20°C to +60°C |
| Interface | Fiber-Optic ibaNet (2 Gbps) |
| Power Requirement | 24VDC ±10%, 45W |
| Calibration Interval | 5 Years (Traceable to PTB) |
Main Features and Advantages
Ultra-Low-Noise Acquisition: Proprietary cryogenic preamplifiers achieve 5nV/√Hz input noise, enabling beam current detection below 1μA in superconducting RF cavities. Drift-compensated references maintain ±2ppm/°C stability during accelerator thermal cycling.
Radiation Hardening: Triple-redundant ADCs with voting logic detect and correct single-event upsets (SEUs) from ionizing radiation. Gold-plated Faraday cages in each channel block GHz-range EMI from klystrons and modulators.
Synchronization Precision: Integrated IEEE 1588v2 Precision Time Protocol synchronizes all IBA SM128V modules within 50ns across kilometer-scale facilities. Optical trigger distribution enables sub-nanosecond coincidence measurements.
Diagnostic Intelligence: Continuous channel health monitoring predicts ADC degradation using machine learning models trained on 10+ years of CERN operational data. Automatic lead resistance compensation eliminates voltage drop errors in kilometer-long sensor cables.
Application Field
The IBA SM128V enables breakthrough measurements in extreme scientific environments:
Particle Physics: Monitors beam position monitors (BPMs) and beam loss detectors (BLDs) in synchrotrons, resolving 0.1μm position shifts at 99.999% availability.
Fusion Research: Acquires plasma current and magnetic field data in tokamaks, with neutron tolerance for ITER-like environments.
Medical Cyclotrons: Measures target current in radioisotope production, ensuring GMP-compliant dose accuracy for F-18 and Cu-64 synthesis.
Synchrotron Light Sources: Captures X-ray detector waveforms at 100k samples/channel for protein crystallography.
CERN LHC Upgrades: Provides radiation-hard monitoring for HL-LHC luminosity detectors at 3000fb⁻¹ integrated flux.
Space Radiation Testing: Characterizes solar particle events in satellite test chambers with SEU-protected data integrity.

IBA SM128V
Related Products
IBA BM24: Beam monitor interface for SM128V signal processing.
IBA QS150: Quantum sensor array compatible with SM128V inputs.
ibaPDA-QM: Control system integrating SM128V data streams.
IBA FH40G: Fiber-optic hub for daisy-chaining SM128V modules.
IBA CC200: Calibration source for SM128V metrology validation.
IBA NM64: Neutron monitor with direct SM128V interface.
ibaAnalyzer: Software for SM128V dataset visualization.
Installation and Maintenance
Pre-installation preparation: Conduct site EMC survey to identify magnetic field sources. Install IBA SM128V in temperature-stabilized racks (±0.5°C) with dedicated 24V DC-DC converters. Use only IBA-qualified fiber cables (OFNP-rated) with APC connectors.
Maintenance recommendations: Perform annual neutron fluence calibration using IBA NFK-10 test kit. Replace front-end ASICs after 10¹³ n/cm² cumulative dose. Validate timing synchronization quarterly with IBA PTP-Test tool.






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