development of hv miniature hv supplies n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Development of µHV miniature HV supplies PowerPoint Presentation
Download Presentation
Development of µHV miniature HV supplies

Loading in 2 Seconds...

play fullscreen
1 / 8

Development of µHV miniature HV supplies - PowerPoint PPT Presentation


  • 131 Views
  • Uploaded on

Development of µHV miniature HV supplies. Harry van der Graaf, Henk Groenstege, Fred Hartjes and Jaap Kuijt. RD51 Collaboration Meeting Kolympari, Crete, Greece, 16-17 June 2009. Concept. Putting dedicated HV units in the vicinity of a detector

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Development of µHV miniature HV supplies' - jermaine-burris


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
development of hv miniature hv supplies

Development of µHVminiature HV supplies

Harry van der Graaf, Henk Groenstege, Fred Hartjes and Jaap Kuijt

RD51 Collaboration Meeting

Kolympari, Crete, Greece, 16-17 June 2009

concept
Concept
  • Putting dedicated HV units in the vicinity of a detector
  • Commercially available HV supplies are not suited for this
    • Often too bulky
    • May use iron based transformers
      • => do not operate in a magnetic field
    • Not radhard
    • Designed to deliver substantial power (1 W or more) where powers in the mW region are needed
    • Mostly no trip level in the nA region
  • Need for dedicated HV supplies in HEP
    • As small as possible
    • Limited output power
      • 5 mW for MPGDs and diamond
      • Up to few 100 mW for silicon
    • => two different versions have to be made
    • Small input power (< few mW without output power)
    • Ranging from 400 to ~ 1000V
    • Very radhard (until 1 Grad, 107Gy)
    • Minimal noise emittance
    • Output voltage stabilization, low ripple
    • High resolution current measurement (< 1 nA resolution)
    • Trip level in the nA region
    • External communication via CAN bus
creating hv with cockroft walton circuit
Creating HV with Cockroft-Walton circuit

Voltage feedback

Block pulses in (duty cycle modulation)

No transformer

Voltage divider feedback for stabilisation

measurement output current
Measurement output current

ADC

To PCI interface

Using inductive DC-DC converters

Analogue current digitized

cockroft walton supply
Cockroft-Walton supply

100 kHz

HV-stage-in

PCI interface

  • Control by PCI-bus
  • Voltage control by regulating duty cycle at output stage
    • Need to regulate +50V supply (amplitude block pulse) as well

Voltage feedback

not miniature yet
Not miniature yet

Presently 38 x 52 mm PCB

To be treated with Parylene (moisture barrier)

status
Status

Cockroft Walton circuit

CAN interface

  • Project just started up
  • Regulation 50V supply to be implemented
  • Miniaturize components
    • Radhard