A1515B

The A1515B family are single width boards (5 TE wide) that house 14 or 16 (see Ordering Options) independent, full floating high voltage individual channels. Which are perfectly suited for GEM detectors.

The A1515B is supplied in different versions equipped with Radiall or REDEL multipin connector.

Consult our connectors reference page for technical information.

As an option, it is possible to request that the REDEL connector be mounted on any version of the A1515B.

The following table shows the available models:

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

The output channels offer dual current ranges (software selectable)

For A1515BTG/A1515BQG/A1515BCG/A1515B:

For A1515BTGHP:

For A1515BV/A1515BVR:

Independently programmable for each channel:

Five special version of the board (A1515BVTG/QG/CG/TGHP/V/VR) have been designed specifically for Gas Electron Multiplier (GEM) detectors (Triple, Triple designed for high rate, Quadruple, Cylindrical GEM detectors and Vertex detectors). These boards have the channels internally stacked in order to power up 2 independent Triple GEM / Quadruple GEM / Triple Cylindrical GEM chambers. This configuration permits to avoid any possible issue related to the detector discharge and avalanche effects and gives the possibility to fine tune the voltage on each detector layer easily.

A CAEN SY4527 mainframe equipped with 16 boards can power 32 detectors and the high maximum current available on each channel allows managing the high segmentation of these detectors in the best way. The high max current per channel feature designed into these boards is beneficial for managing the high segmentation of GEM detectors, as it will allow discrete detector layers to perform even in the event of a short. 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.

In the GEM dedicated version of the A1515B in the overcurrent condition causes the following actions:

• A1515B or A1515TG/QG/CG/TGHP/V/VR (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.

• A1515BTG/QG/CG/TGHP/V/VR (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. The channels can be enabled or disabled through the Interlock logic. The voltage ramp rates may be set independently for each channel.

Moreover, for board equipped with Radiall 52 pin connector the following accessories are available: Mate cable connector (Mod. A996) and relevant insertion/extraction tool (Mod. A995).