Did a tune up on the apparatus 3/28/22.

Tweaked crystal and detector alignments to optimize the rates.

Setup 50/50 BS in place, no irises in place, paths identical, Piezo at 35V.  10s count, rates given in Hz.  Room lights on table uncovered.

====== Laser On ======

===== Singles =====

APD 1 = 55026.4

APD 2 = 46881.3

APD 3 = 34893.3

APD 4 = 60498.7


===== Coincidences =====

APD 1 = 54947.7

APD 1&2 = 1138.19

APD 1&3 = 983.347


Same setup at above but without 50/50 BS.

===== Singles =====


APD 1 = 95749.5

APD 2 = 44496.7

APD 3 = 37032.1

APD 4 = 5247.1

===== Coincidence =====

APD 1 = 95664.6

APD 1&2 = 2080.66

APD 1&3 = 1663.74

====== Laser Off ======

Same setup as above.

===== Singles =====

APD 1 = 5062.4

APD 2 = 5066.08

APD 3 = 5181.41

APD 4 = 5163.4

===== Coincidence =====

APD 1 = 5035.41

APD 1&2 = 3.89822

APD 1&3 = 3.29915