HRS Electronics Update

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User name David Anez

Log entry time 18:21:47 on January22,2011

Entry number 345928

keyword=HRS Electronics Update

To make sure the high precision TDCs can be used on both arms, three LDU 1200 delay modules were installed in the right arm electronics.

One module was take from the NIM crate of the second rack in the left arm, specifically the module used for the Cerenkov, as high precision is not needed with the Cerenkov signal.

Two modules were taken from the cabinet at the top of the left arm.

In the right arm, two of the modules were installed in the NIM crate in the first rack, next to the S2m electronics, while the third was installed in the top NIM crate in the third rack.

Several modules were moved around to make room, including three modules that were moved from the NIM crate in the first rack to the NIM crate in the second rack, next to the HAPPEX luminosity electronics (which themselves were shifted over to make room). Two modules were also moved around in the NIM module in the third rack.