1. P.Fedorets on behalf of the Pellet target group
NRC «Kurchatov institute»- ITEP
7 June 2017

2. Data acquisition system for target
Gas flow control
Remote controlled system via TCP/IP sockets
Delphi XE2 language software for Windows PC
Temperatures
Heater control
Pressure

3. Heater control unit Microcontroller based, two channels,
based on ICPDAS industrial modules
Controlled from sensor LCD panel or from PC
Scheme for mA current control of wire heater (0-100 Ohm)
C language software for μPAC7186 microcontroller
Delphi XE2 language software for Windows PC
Communication via Ethernet LAN

4. Development of diagnostic system
Goal: measurement of the pellets with high spatial resolution
LED back-lighter
MOSFET driver scheme
Powerful LED LUXEON V-Star
Min exposure: 100 ns
Low cost CCD camera SDU-285 (~0.8 kEuro)
resolution: SONY CCD ICX285AL x1032 pixels
min exposure: 7 μs
12 bit dynamic range
270 ns
100 ns
Light signals obtained by Hamamatsu R760 photomultiplier

5. Nozzle position aligment
Proposed linear actuators
MDC Vacuum BLM UHV linear actuator
Movement by stepper motors, 3 µm linear steps
Onitex OSM-42R controller
Present Delphi software for
SDU-285 CCD
Software for aligment
- in development
Nozzle

6. Tests with water, development of diagnostic system
Goal of the first tests – selection of the optics and getting of the images of jet and droplets. Study of possibility for application of such camera for measurements.
distilled water
nozzle
optics
LED
CCD camera

7. Tests with water, first results with new camera
Nozzle ≈ 64 μm, (left photo) jet Ø ≈ 70 μm and droplet Ø ≈ 128 μm
CCD camera exposure: 300 ns

8. Droplets inside the channel
Tests with Hydrogen
first results with CCD SDU-285 camera + LED backlighter
Droplets inside the channel
465 kHz
Nozzle Ø 30 μm, droplet Ø ≈ 50 μm
Exposure: 400 ns (LED backlighter Luxeon V-Star LXHL 700 mW)
Frequency to piezo ring 465 kHz

9. Calibration of the diagnostics system by using the optical pattern
The CCD pixelfly Resolution 1392 x 1024
pixel size x 6.45
The leans Sigma DG APO Macro
180 mm f/ 2.8

10. Calibration of the diagnostics system by using the optical pattern
We used the two types of the calibrated optical patterns:
We used two types of calibrated optical patterns:
Type one
Type two

11. Phase Doppler Interferometer
Preparation for the tests:
The test facility with water was assembled and tested for leakages. This stand allowed to establish the necessary equipment to create the interferometric pattern in the area of flight of the droplets.
Goal: measurement of the velocity and the size of the pellet.

12. Designed stand with a laser Doppler interferometer
mount the nozzle
The laser power supply
Water layout
focused laser beams on a water jet
power supply PMT
the lens for focusing the laser beams
oscilloscope
Optical system
collimator for receiving the signal

13. Designed stand with a laser Doppler interferometer
The laser power supply
Water layout
power supply PMT
oscilloscope
Optical system

14. Pellet target group:
M.Büscher, A.Gerasimov, V.Chernetsky, P.Fedorets, A.Dolgolenko, P.Balanutsa, L.Gusev, A.Kantsyrev, E.Ladygina, V.Panyushkin, S.Mineev, S.Podchasky, I.Tarasenko, V.Demekhin, S.Makagonov, D.Bogachenko, N.Kristi…