AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40
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Message ID: 3     Entry time: Sat Feb 18 11:10:49 2017
Author: DK 
Subject: DSSD mapping 
Today we set up and labelled the amplifiers and feedthroughs from E7 to J1.  Unrelated to that, when we arrived at 13:45 the F3 pressure was 1 x 10^-3 Pa, and at 19:45 
departure it had dropped to 9 x 10^-4 Pa.

Patches are as follows, following the standard CRIB convention for this type of experiment.

B: PSD1X
C: PSD1Y
D: PSD2X 
E: PSD2Y
F: PSD3X
G: PSD3Y
H: PSD1T
I: PSD2T
J: PSD3T

Considering the differences with the previous experiment (7Be THM 2016.11), a majority of cabling was switched or is newly done.

12 8-ch amps, 3 16-ch fast-amps, and 12 4-ch CFDs were set up, half of the amps inverting and half non-inverting, all using the high-gain chips.  The inverting amps have the 
preamp signal daisy-chained to the fast-amp which are connected to CFDs for the timing.  All amps, fast-amps, and CFD outputs are connected to the E7-side cable patch.

The two 19" racks behind the F3 chamber were swapped, since the capacity of each rack did not match the new asymmetric preamp setup.  All feedthrough cables were removed (as 
most needed to be changed anyway and then reassigned to a convenient location for a logical structure.  

deltaE-E telescope numbering goes from #1 to #3, from left to right, as seen from the beam's perspective.  Thus #1 & #2 are processed on the beam left side, and #3 is processed 
on the beam right side.

The crate order (looking upstream now, beginning from the left) then has 3X & 3T on top, and 3Y beneath.  On the right-hand rack, 1X & 1T on top, 2X and 2T in the middle, and 
1Y & 2Y on the bottom.

The racks were also moved slightly apart, with the main considerations that enough space be available to (somewhat easily) pass F3 on the beam left side, but also that we can 
easily access the rear center of the F3 chamber (which was less relevant in the previous experiment).

Most of the preamps are not connected to anything, and half of the ADC inputs to the CAMAC crate in J1 are also missing inputs (but we found 6 appropriate cables).  Most other 
things are completed, with exceptions including the HV wiring, J1 triggering, and anything related to the DAQ and/or calibration.  The gains and thresholds still need to be 
checked as do the channels.

Nothing was done for the thick SSD signal processing yet.
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