Testing and Configuration for VMM1 on the mini-MMFE at Brookhaven - - PowerPoint PPT Presentation

Testing and Configuration for VMM1 on the mini-MMFE

at Brookhaven National Lab Sarah Jones (Arizona), Jessica Metcalfe (BNL), Charlie Armijo (Arizona)

Testing the mini-MMFE

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USB connection

Timing Example for New Setup

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• At peak, ramp begins for

timing between peak and readout signals. Slope of ramp gives conversion from voltage to time. Ideally, slope = constant

TAC Slope measurement y = 0.634x + 189.1 100 200 300 400 500 600 700 800 900 200 400 600 800 1000 1200 peak to enable time (ns) TDO (mV) Timing Measurements, CHN 5 935.000 940.000 945.000 950.000 955.000 960.000 965.000 125 175 225 275 325 Ouput Pulse Amplitude (PDO-BL) [mV] TDO time [ns]

Noise Measurement Example

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Gain Noise Measurement, CHN 64 unmasked nearby channels

0.000 0.100 0.200 0.300 0.400 0.500 0.600 50 100 150 200 250 peaking time (ns) RMS (mV) Gain 0.5 mV/fC Gain 1 mV/fC Gain 3 mV/fC Gain 9 mV/fC

• Noise measurements with RMS vs peaking time for various

Gains (0.5, 1, 3, 9 mV/fC)

• CHN 64 noise:

Plans

• Testing of the mini-MMFE was successful

with only minor issues

• Next steps are to:

 Assemble remaining 10 mini-MMFE (left-

handed) this week and begin testing at BNL late next week

 Fabricate V2 adapter card (with LVDS to

RSDS conversions) this week

 May not be needed but will have it anyway

 Begin layout of right-handed mini-MMFE

 Few day job

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Issues with Current Boards

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• Digital ground and digital signal switched
• ena and wen signal pins switched
• a0-a5 address pins switched in order
• TDO and PDO signal connectors switched
• Ribbon cables (for 60 to 60 pin) are

difficult to construct

• Silkscreen issues

VMM1 Readout Plan

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New “C-Card”

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AVNET LX9 with Spartan 6 FPGA for ethernet connection to switch Existing BNL DAQ board with ADCs and Cyclone IV for readout, configuration

DAQ Status and Plans

• UDP datagram sent between client and server

at Arizona

 Can be used for testing with Mamma DAQ

• UDP datagram sent from LX9 at Harvard

 Will be tested at Arizona this week

• Communication between Jack’s BNL DAQ

board and LX9 progressing well

• Integration at BNL 7/2 – 7/11 including

George Iakovidis et al.

• Need meeting with Marcin on Mamma DAQ

end

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UDP Client UDP Server UDP Datagram ACK

• UDP client and server are running on a LAN.
• We have sent a big-endian datagram via the UDP client on

the laptop, which is a sample event in the current format.

• We have received the datagram on a desktop computer and

unpacked three 32-bit words of the event to correctly

• btain each address, timing, and amplitude included.
• The server sends an ack, which in this case completes the

transaction.

• The Spartan6 LX9 will replace the laptop as soon as we get

the compiled image.