The aim of this page is to document how we reconfigure the ASC MPOD from standard ePix configuration to be able to run the legacy CSPAD detectors (CSPAD 2M and CSPAD140).
Hardware configuration changes.
The CSPAD concentrator and PDU is located on top of the ePixPDU in the ASC MPOD. The first step in reconfiguring the hardware is to move the Weiner power cables (HV and LV) from being connected to the ePix PDU to being connected to the CSPAD PDU. See Figure 1. in addition to these connectors, the CSPAD PDU and concentrator takes a number of input connectors:
- RS232 ethernet cable (Concentrator; connects to the digi under the optical fiber, close to the tool cabinet);
- 3 fiber optical cables (RC0, RC1,EVR);
- 3 bnc cables (2M trigger; DAQ and Run trigger for small, connects to the back of daq-det-portable2 in the chase);
A number of output connectors are present going to the detectors:
- CSPAD2M: 2 sets of cables labeled Q0-Q3 are connected to the back of the detector (one Q-pair per quad);
- CSPAD140: one power cable is connected to the back of the CSPAD140; additionally, the RC1 fiber connection is taken out of the concentrator when running a 140 and connected directly to the back of the detector.
Figure 1. Connections needed to run CSPADs in the ASC lab.
Fiber optic connections
The RC0 and RC1 fibers are fiber lanes 1 and 2 that we normally use to run small ePix detectors (Marietta). The EVR fiber goes back to the chase and connects up to the third channel of the EVR module, as can be seen in Figure 2. The
Figure 2. Fiber optical connections for running CSPAD detectors.