Single Crystal Diamond Beam Position Monitors with Radiofrequency Electronic Readout

Journal Article · Wed Jun 23 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3463347· OSTI ID:21410351

Solar, B; Graafsma, H; Potdevin, G; Trunk, U ^[1]; Morse, J; Salome, M ^[2]

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1. Hasylab, Deutsches Elektronen Synchroton, Hamburg (Germany)
2. Instrumentation Services and Development Division, European Synchroton Radiation Facility, Grenoble (France)

Over the energy range 5{approx}30 keV a suitably contacted, thin ({approx}100 {mu}m) diamond plate can be operated in situ as a continuous monitor of X-ray beam intensity and position as the diamond absorbs only a small percentage of the incident beam. Single crystal diamond is a completely homogeneous material showing fast (ns), spatially uniform signal response and negligible (<pA) leakage currents. Due to its unsurpassed thermal conductivity, it is the only semiconductor material that can be used in intense synchrotron white beams. We report on tests made at ESRF and DESY using diamond beam position monitors of simple quadrant electrode designs with metal contacts, operated using wideband electronic readout corresponding to the RF accelerator frequency. The instrumentation for these monitors must cover a large range of operating conditions: different beam sizes, fluxes, energies and time structure corresponding to the synchrotron fill patterns. Sophisticated new RF sampling electronics can satisfy most requirements: using a modified Libera Brilliance readout system, we measured the center of gravity position of a 25 {mu}m beam at the DORIS III F4 beam line at a rate of 130 Msample/s with narrowband filtering of a few MHz bandwidth. Digitally averaging the signal further provided a spatial resolution {approx}20 nm.

• OSTI ID: 21410351
• Journal Information: AIP Conference Proceedings, Vol. 1234, Issue 1; Conference: SRI 2009: 10. international conference on radiation instrumentation, Melbourne (Australia), 27 Sep - 2 Oct 2009; Other Information: DOI: 10.1063/1.3463347; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM POSITION
BEAMS
CHEMICAL VAPOR DEPOSITION
DESY
EUROPEAN SYNCHROTRON RADIATION FACILITY
GRAVITATION
KEV RANGE
LEAKAGE CURRENT
MHZ RANGE
MONITORS
MONOCRYSTALS
OPTICS
RADIOWAVE RADIATION
READOUT SYSTEMS
SAMPLING
SEMICONDUCTOR MATERIALS
SPATIAL RESOLUTION
SYNCHROTRON RADIATION
THERMAL CONDUCTIVITY
X RADIATION
ACCELERATORS
BREMSSTRAHLUNG
CHEMICAL COATING
CRYSTALS
CURRENTS
CYCLIC ACCELERATORS
DEPOSITION
ELECTRIC CURRENTS
ELECTROMAGNETIC RADIATION
ENERGY RANGE
FREQUENCY RANGE
IONIZING RADIATIONS
MATERIALS
MEASURING INSTRUMENTS
PHYSICAL PROPERTIES
RADIATION SOURCES
RADIATIONS
RESOLUTION
SURFACE COATING
SYNCHROTRON RADIATION SOURCES
SYNCHROTRONS
THERMODYNAMIC PROPERTIES