1. Design of High Voltage System Kyungju Ma & Reno Collaboratiors
9th RENO collaboration meeting, Oct 10, 2008

2. CAEN SY1527

4. CAEN HV Floating Power Supply Boards

5. 48 Channel 3kV Distributor Board-CAEN A1932A
One Primary and 48 distributed Channels
0 ~3kV output voltage
Available with either positive or negative polarity
200mV Voltage Set/Monitor resolution
Voltage ripple smaller than 30mV pp
Programmable TRIP parameter
1~500Volt/sec programmable Ramp Up/Down
Common Floating Return
VMAX Trimmer for hardware maximum voltage adjustment
A1932A

7. External Connections and Ordering option
Components of front pannel
External connectors
Output Channels(1…48),
Floating Ground(FAGND),
IINT
IEXT
Multi connector Radiall Type, 52pin male( to be mated with Radiall )
FAGND
Radiall R socket,
2mm
AGND
PASSIVE INTERLOCK
00-type LEMO connector
SIGNAL INTERLOCK
Ordering Option
Code
Description
WA1932APAAAA
A1932AP-SY1527H.V.channels+3kV/500uA-Multipin Conn.(48ch)
WA995XAAAAAA
A995-insertion/extraction tool Radiall for A996
WA996XAAAAAA
A pin cable connector for A173XB-A183XB-A1932A-A1535
Mod. A1932A front pannel

9. Needed Parts for HV Distributer

10. HV Distribution Box Design

11. Circuit Diagram of the HV Distribution Box
High Voltage and PMT signal Decoupler Board Circuit
49.9k, 1%
10K
4.7nF,3kV
49.9k, 1%
100k, 1%
FAG AG 48 47
Radiall 48 pin contacts of
Radiall 52 connector
Circuit Diagram of the HV Distribution Box

12. PMT HV Splitter-TESTED R7081 PMT and HV supplying and signal lead circuit

14. Undecided part HV distributor to Qbee Board 48 RG303 PMT single cable
SHV connector
SHV mountable connector
Radiall Receptacle plug
Radiall plug& multi HV Coaxial cable
PMT input Card
HV distribution Box
(CAEN A1932A)
Qbee Board
HV & Signa Decoupler Box
Undecided part
48 ch. PMT Signal connection to Qbee board

15. 48Ch HV supply
48Signal from PMT
19 inch(475mm)

16. Example for BOX Design

17. LEMO multi Coaxial Connector

18. LEMO S-Series Dimension

19. LEMO 5B, 5K

21. Harting Mini coax mini connector

22. Harting mini Coax connector cable assemble

24. Qbee board PMT input Card pin list and dimension

25. SUMMARY Circuit diagram of the HV PS Distribution Box is confirm
HV Distribution Supply module decide : CAEN Mod. A1932A
Circuit diagram of the HV PS Distribution Box is confirm
HV supply board to HV PS distribution box connection decide
HV PS Distribution Box to Qbee board connection study