Products / Detectors / sCVD Diamond Beam Loss Detector
Product enquiries:
Beam-Losses at Electron Accelerators
The B1-HV sCVD Diamond Beam Loss Detector is optimized for high intensity beam losses and high radiation levels. This detector has a separate high-voltage input for the bias-voltage supply. The B1-HV sCVD Diamond Beam Loss Detector can be used for AC as well as DC readout. Charging capacitors are implemented to compensate for the detector discharge at high ionization levels.
The B1-HV detector is in use as beam loss detector at the LHC at CERN.
Sensor material:
sCVD diamond
Sensing volume:
4 mm x 4 mm x 0.5 mm
Charge yield (AC mode):
3 fC / MIP
Charge yield (DC mode):
2 μC / Gy
Calibration Aperture:
1 mm in diameter
The B1-HV can be used and optimized for various applications.
  • For UHV vacuum applications, we can provide a specified ceramics packaging for this detector.
  • B1-HV in combination with the C2 Broadband Amplifier is used for fast beam loss measurements with a very high intensity dynamic range. Bunch-by-bunch loss measurements are feasible using this system with time resolution in the sub-nanosecond range.
B1-HV sCVD Diamond Beam Loss Detector

This product information download contains the following CIVIDEC documents :
Diamond Detectors at CERN - CNGS
Fast timing measurements were applied with the B1-HV detector at the CNGS experiment at CERN, Geneva/Switzerland, in 2012 to help clarifying the famous 'faster-than-light neutrino anomaly' which puzzled the international scientific community at the time.

Diamond Detectors at SLAC, LCLS-II
The B1-HV Diamond Beam Loss Detector is used at the SLAC LCLS-II accelerator for beam loss measurements. The B1-HV Detectors are included in the machine protection system.
In Vacuum Diamond Sensor Scanner for Beam Halo Measurements in the Beam Line at the KEK Accelerator Test Facility
S. Liu, et al., NIMA, 832, 231-242, 2016


Verification of the CNGS Timing System using Ultra-Fast Diamond Detectors
H. Jansen, et al., CERN-ATS-2012-250 / CERN-PH-EP-2012-213 / JINST-039P-0812, 2012

Chemical Vapour Deposition Diamond - Charge Carrier Movement at Low Temperatures and Use in Time-Critical Applications
H. Jansen, PhD Thesis, Rheinische Friedrich-Wilhelms-Universität Bonn, 2013