Projects

Electronics and Devices


 For details feel free to ask J.Maurer(at)gsi.de

Patent: Hadronen-Geschwindigkeitsmessgerät

(Hadron Velocity Measurement Device)

Internationale Veröffentlichungsnummer: (Patent Number): WO002014202499A1

The device allows non-destructive measurement of ion beam energy with absolute precision down to 0,1 %. Calibration with a high precission electron gun allows compensation of temporal deviation.

Rido Mann, Joachim Maurer

ValveControl_16

Device allows manual and remote operation of valves and automatic closing in case of interlock

Usable for switching ohmic or inductive loads (either 60 V / DC: 3 A or 125 V / AC1: 125 VA; AC15: 25 VA)

  • open / close (on / off) buttons for manual usage
  • indication of valve position (position switches) via LED
  • 3 different interlocks for pressure in chamber A, B and independent one
  • interlock signals are isolated mirrored and output
  • no self-opening of valve
  • remote in- and outputs for controlling the valve and reading its position and general interlock
  • remote controlling of the valve via closing contact or 0-5 V signal (internal switch)
  • all inputs and outputs optically isolated (outputs: open collector)
  • buttons signals are executed prior remote signals
  • restart lockout after power failure of internal or external supply
  • different supply circuit for logic and isolated inputs / outputs
  • separated and customizable supply for external load
  • selectable pull-up resistors for outputs: open, close, general interlock

Detector chamber for COMPASS at SHIP (former MoDSS)

  • contains silicon box detectors, preamplifiers, cooling
  • compact design, light weight, transportable
  • separated cooling of detectors and electronics
  • allows close mounting of germanium detectors

AktiKon (Aktivitätskontrolle)

  • provides additional safety functions in order to use radioactive targets
  • controlls gate valves, pumps and target wheel depending on certain conditions like pressure in chamber and exhaust air tubes
  • confirms to general safety standards
  • activates sound and light alarm signals
  • inhibits restart until user activates functions manually
  • shows status of all connected sensors, pumps and target wheel

Beamcontrol

  • controls the safety cup and "Strahlanforderung"- signal depending on user action and interlock condition
  • prevents the cup from damage by frequently occurrence of interlock signals
  • provides secure "Beam off" condition
  • shows the position of the safety cup

EnergyMeasAutomatic

  • calculates and shows the ion beam energy in MeV/u on seven segment display
  • normalizes counted events depending on beam intensity
  • scans magnetic fields within an adjustable range by applying specific currents
  • provides start, stop as well as gating functionality in case of low beam intensity
  • works in 4 different user selectable operating modes
  • counts events, saves average values and transmitts eventdata to a PC

TargetWheelControl

  • synchronizes the target wheel to an external puls with a maximum deviation of +-200µs @ 18,67 Hz rotating speed
  • mean deviation is about +-30µs @ 18,67 Hz rotating speed
  • works in 2 user selectable speeds
  • provides safety functionality: wheel blocked, wheel too fast/too slow, wheel not starting, puls failure...
  • provides increment encoder position signals

MNGMotorcontrol

  • replaces damaged motor control board of Bruker magnet power supply
  • consists of up-to-date power circuits
  • provides manual motor control
  • shows status of motion
  • compares desired and actual value and generates interlock condition (not used)

Triggerbox

  • generates pulses to synchronise data acquisition systems such as Beam Energy Controlling, Target Online Diagnosis, SHIPGuard Target Visualisation...
  • let the user choose a certain target to trigger connected hardware
  • low cost standard microcontroller board

PC Based Data Acquisition Systems - National Instruments - LabView


 

SHIPGuard TargetControl

  • controlling a current source to systematically scan targets in rotating direction expand the Target Online Diagnosis System of R. Mann and calulates high detailed 3D images of targets while experiment is running
  • Resolution in shown image
    • horizontal: 10 µm
    • vertical: 180 µm
    • thickness: < 0,5 nm
    (click images to enlarge)

SHIPGuard - MakroLoupe

  • measures deviation of sequent makro pulses with µs resolution
  • measures deviation of the desired position and the actual position (in time) of the target wheel per round
  • shows both deviations in different histogramms
  • saves date and time when selectable limit values have been exceeded