false
X

Mail

Have you lost your password?

if you have forgotten your password click HERE

If you have not received the activation mail click here

Print
main A1515
NEW

A1515

14/16 Channel 1-1.3kV (1 - 3 mA) Boards for GEM detectors

Features
  • 14/16 independently controllable High Voltage channels
  • Individual Full Floating Channel (insulated up to 5 kV)
  • Designed specifically for GEM detectors
  • Output channels grouped into 2 Complex channels
  • Radiall 52 pin connector
  • 0÷1kV and 0÷1.3kV output ranges
  • Dual range current:
    • High Power: 0 ÷ 1/3 mA, (Imon resolution: 1/3 nA)
    • High resolution: 0 ÷100/300 µA, (Imon resolution: 100/300 pA)
  • Max output power up to 1.5 W per channel
  • Programmable TRIP parameter (Complex channel setting)
  • Current generator operation in Overcurrent condition
  • Voltage ripple typ. < 5 mVpp
overview A1515
Overview

A1515 family are single width board (5 TE wide) that house 14 (A1515TG/A1515CG/A1515TGHP) or 16 (A1515/A1515QG) independent high voltage Individual Floating channels. All versions are equipped with Radiall Multipin connectors.

The channels have floating return, independent one from another, insulated up to 5 kV(Full Floating channel). The output voltage range is 0 ÷ 1 kVor 0 ÷ 1.3 kV, with 20 mV set and monitor resolution.

The output channels offer dual current ranges (software selectable)
For A1515TG/A1515QG/A1515CG:
pnt High Power:
pnt High Resolution:
0 ÷ 1 mA
0 ÷ 100 µA
I set resolution: 20 nA
I set resolution: 20 nA
I mon resolution: 1 nA
I mon resolution: 100 pA
Max. power: 0.7 W

For A1515TGHP:
pnt High Power:
pnt High Resolution:
0 ÷ 3 mA
0 ÷ 300 µA
I set resolution: 20 nA
I set resolution: 20 nA
I mon resolution: 3 nA
I mon resolution: 300 pA
Max. power: 1.5 W


Independently programmable for each channel:
pnt Output voltage:
pnt Current limit (Iset):
 
pnt HV Ramp up/down:
pnt TRIP parameter
0 ÷ 1/1.3 kV
0 ÷ 1 mA/100 µA
0 ÷ 3 mA/300 µA
1 ÷ 100 V/sec
step: 20 mV
step: 20 nA
step: 20 nA
step: 1 V/sec


Four special version of the board (A1515TG/A1515QG/A1515CG/A1515TGHP) have been designed specifically for Gas Electron Multiplier (GEM) detectors. These boards have the channels internally stacked in order to power up 2 independent TripleGEM / QuadrupleGEM chambers/Triple Cylindrical GEM chambers. This configuration permits to avoid any possible issue related to the detector discharge and avalanche effects and also gives the possibility to fine tune the voltage on each detector layer easily.

A CAEN SY4527 mainframe equipped with 16 A1515TG/A1515QG/A1515CG/A1515TGHP boards is able to power 32 detectors and the high maximum current available on each channel allows managing the high segmentation of these detectors in the best way. In addition the 2-quadrant 100 µA low current range allows a 100 pA current monitoring resolution which allows the monitoring of ion backflow currents and also to perform real-time detector diagnostics.

Moreover, are available the following accessories: Mate cable connector (Mod. A996) and relevant insertion/extraction tool (Mod. A995).
Model Compare
Model
Max Output V (kV)
Max Output I (mA)
Vset Resolution (mV)
IMon Resolution (nA)
Ripple Typ. (mVpp)
Max Power per Channel (mW)
# of ch
Features
1
1/0.1
20
0.1/1
< 10 Common Mode
< 5 Differential Mode
700
14
For Triple GEM chambers
1
1/0.1
20
0.1/1
< 10 Common Mode
< 5 Differential Mode
700
16
For Quadruple GEM chambers
1.3 ( 2 ch) -
1 (12 ch)
1/0.1
20
0.1/1
< 10 Common Mode
< 5 Differential Mode
700
14
For Triple Cylindrical GEM chambers
1
3/0.3
20
0.3/3
< 10 Common Mode
< 5 Differential Mode
1500
14
For Triple GEM chambers (high rate)
1
1/0.1
20
0.1/1
< 10 Common Mode
< 5 Differential Mode
700
16
Non Stacked channels
Safety features A1515
Safety features
arrow Channels can be enabled or disabled through the Global Interlock logic.
arrow Overvoltage and Undervoltage warning when the output voltage differs from the programmed value.
arrow Safety Board Interlock: this protection disables the HV generation when the HV outputs are not connected to their loads.
arrow Overcurrent detection: when a channel attempts to exceed the programmed current limit, it signaled to be in "overcurrent" and the channel enter in a TRIP status. The output voltage is varied to keep the current below the programmed limit for a programmable TRIP time. Overcurrent lasting more than set value, causes the following actions:

arrow A1515 or A1515TG/A1515QG/A15151CG/A1515TGHP (not in GEM-mode) : the channel is switched off. Output voltage will drop to zero at Ramp-down rate. If TRIP is set to "constant current mode", the channel behaves like a current generator.
arrow A1515TG/A1515QG/A15151CG/A1515TGHP (in GEM-mode): all stacked channels are switched off following a programmed sequence. Output voltages will drop to zero at Ramp-down rates. If TRIP is set to "constant current mode", the channel behaves like a current generator.

ramp_up_doin A1515
A1515TG power on and off behaviour
The figures show a typical A1515TG power on and off behaviour when connected to a triple GEM detector.
Mainframes
Universal Multichannel System - Mainframes
Modularity, Compatibility, Connectivity, Usability and Solidity are the keywords of the system design. The Mainframes have been specifically designed to power all detector technologies found in modern Physics Experiments, such as photomultipliers, wire chambers, streamers tubes, silicon detectors and others.

The systems are modular, flexible and match not only the requirements of major experiments with large number of channels but also the practical needs of test laboratories, where simple manual operations on a limited number of channels are often desired.

For more information see the Mainframes web pages: