ACORDE electronics 1 Block diagram 2 Last modifications

ACORDE electronics 1

Block diagram 2

Last modifications ACORDE has now 143 configuration bits distributed in 9 parameters. They can be set through the DAQ system. ACORDE can read 70 parameters (983 bits) through the DAQ system. The four LO trigger and ML 0 modes has been included. The BUSY signal and the ACORDE calibration system has been instrumented. 3

BUSY signal generation 4

Controls words (DAQ) 5

Script examples 6

Status words (DAQ) 7

Script examples 8

Test Setup in the DAQ lab Trigger DAQ PC Logic analyzer Oscilloscope 100 MHZ L 0 from the LTU BUSY ML 0 ACORDE electronics 9

DATE and Trigger software 10

Test results The L 0 and ML 0 trigger modes have been tested by Pedja and they are OK. We had the following problems: Data header generation Differences between minievent. ID and event. ID. BUSY signal. We found that LHC_CLK_D 1 is not being delivered correctly by the trigger system. The phase of this clock signal does not correspond with the specification in the data sheet. Solution: We have made hardware modifications to solve these problems but we need to keep this in mind because there is a high probability to have the same problems in the cavern. After these modifications the electronics was tested successfully by the DAQ group. 11

Trigger mode signals Toggling Random Signature Random 12

Test results (continue) LHC_CLK_40_D 1 The digital signals from the TTCrx are misaligned LHC_CLK_40_D 2 13

Test results (continue) The ACORDE calibration system was partially tested in the DAQ lab. The results shown that it is working correctly. The complete test will be carry out with the modules in the cavern. The functionality of the BUSY signal has been tested by Anton and Pedja and the results were good. 14

Current situation The electronics has been located in the CAVERN since last Friday. The Trigger and the DAQ systems are not ready yet. May be the DAQ system will be available tomorrow. May be the trigger system will be available next week. 15

Current situation (continue) ACORDE electronics in the cavern ACORDE modules Structure 16

Tasks To verify the phase of the clock signals coming from the TTCrx. Run a test to verify the data header and data event to see if there is an stable readout. Verify if the calibration system works correctly. Verify if the mutlicoincidence trigger is generated correctly. Implement bits error to indicate trigger sequences not allowed. The electronics needs a physical reset generated by software. This needs to be done through the DCS. 17