2025-07-01 @ ALS 8.3.1
James and Mehagan continued data collection from Galen's macrodomain plate using a variety of mounting methods.
Data path (ALS): /data/jamesh/diffUSE /data/mehaganh/diffuse
Dose rate of ~1000 Gy/s @ 1.25% transmission
James' text notes
Crystals being mounted from Galen's plate the first six (xtal1-xtal6) were from wells A1 and A2. I tried free-air mounting in paratone-N oil (no sleeve). This didn't work too well.
XDS processing results:
prefix range transmission reso ISa SG cell
xtal3_t1_1 1-7200 0.00032209 1.413A 5.55 P41 89.8700 89.8700 39.8100 90 90 90
the next two (xtal7-xtal8) Mehagan mounted out of A3. Still in paratone, but using sleeves. These worked better.
xtal7_t1_1 1-7200 0.00032209 1.320A 7.58 P41 89.9400 89.9400 40.1000 90 90 90
xtal8_t1_1 1-682 0.00032209 1.514A 9.16 P41 89.8300 89.8300 40.1700 90 90 90
next two (xtal9-xtal10) were from well A5. No oil with sleeve. Two targets from same crystal. Two backgrounds: bg_2 at same attenuation as data, but collected from the kapton "neck" of the loop. bg_3 same, but with no attenuation.
xtal9_t1_1 1-7200 0.0125744 1.204A 13.54 P41 89.8300 89.8300 40.4100 90 90 90
xtal9_t2_1 1-7200 0.0125744 1.198A 12.64 P41 89.8100 89.8100 40.4400 90 90 90
xtal9_bg_2 1-720 0.0125744
xtal9_bg_3 1-720 1
A6: drop and crystals covered in santovac-5 oil, also with sleeve xtals=10,11,12 subscript "b" as in t2b is a "burn" run with no attenuation
xtal10_t1_1 1-7200 0.0125744 1.427A 13.99 P41 89.7400 89.7400 39.9700 90 90 90
xtal10_t1b_2 1-1800 1 1.571A 20.04 P41 89.7700 89.7700 40.1300 90 90 90
xtal10_t2_1 1-7200 0.0125744 1.408A 15.88 P41 89.7200 89.7200 40.1700 90 90 90
xtal10_t2b_2 1-1800 1 1.533A 16.36 P41 89.7900 89.7900 40.2300 90 90 90
xtal10_bg_3 1-720 0.0125744
xtal10_bg_4 1-720 1
xtal11_t1_1 1-7200 0.0125744 1.366A 12.60 P41 89.7900 89.7900 40.3700 90 90 90
xtal11_t2_1 1-7200 0.0125744 1.250A 14.93 P41 89.8100 89.8100 40.3200 90 90 90
xtal11_t3_1 1-7200 0.0125744
xtal11_bg_3 1-720 1
xtal12_t1_1 1-7200 0.0125744 1.453A 7.99 P41 89.9600 89.9600 40.5300 90 90 90
xtal12_t2_1 1-3212 0.0125744 1.262A 15.70 P41 89.8100 89.8100 40.4000 90 90 90
xtal12_t3_1 1-7200 0.0125744 1.454A 8.80 P41 89.9800 89.9800 40.5900 90 90 90
xtal12_bg_3 1-720 1
beam drift problem: by end of run: 834.3 Gy/s unattenuated
tuned up to do runs 2 and beyond for xtal12 from here on I am certain about the dose rate being 1 kGy/s for transmission=0.0126 next round was re-visiting the three targets on xtal12
xtal12_t1_2 1-7200 0.0125744 1.274A 15.51 P41 89.9000 89.9000 40.5700 90 90 90
xtal12_t2_2 1-7200 0.0125744 1.222A 18.01 P41 89.8100 89.8100 40.5400 90 90 90
xtal12_t3_2 1-7200 0.0125744 failed
and again, this time unattenuated
xtal12_t1b_3 1-7200 1 2.055A 13.54 P41 89.8300 89.8300 40.4900 90 90 90
xtal12_t2b_3 1-7200 1 1.671A 20.42 P41 90.0100 90.0100 40.5900 90 90 90
xtal12_t3b_3 1-7200 1 failed
target 4 was in between two pre-burned areas (1 and 2), to see impact of nearby rad dam
xtal12_t4_1 1-7200 0.0125744 1.287A 16.96 P41 89.9100 89.9100 40.6400 90 90 90
xtal12_t4_2 1-7200 0.0125744 1.618A 20.67 P41 90.1100 90.1100 40.6700 90 90 90
And, finally, because we were going home, I turned on the cryo stream to start cooling it down as we collected. Target 5 was, again, in between targets 2 and 3.
xtal12_t5cool_2 1-7200 0.0125744 1.406A 11.63 P41 89.9000 89.9000 40.6300 90 90 90
xtal12_t5cool_3 1-7200 0.0125744 1.903A 23.31 P41 89.3600 89.3600 39.3400 90 90 90
Next day, collected on two more crystals from well A6. Still under santovac-5 oil, but cryo-cooled.
xtal_1_T1 1-7200 1 1.274A 13.15 P41 89.0700 89.0700 39.6900 90 90 90
xtal_1_air_2 1-720 1
xtal_1_T2 1-7200 1 1.114A 14.45 P41 88.8600 88.8600 39.4700 90 90 90
xtal_1_T3 1-2289 1 1.267A 1.46 P41 88.9900 88.9900 39.5900 90 90 90
xtal_2_T2_1 1-7200 1 1.181A 10.48 P41 88.8500 88.8500 39.6100 90 90 90
xtal_2_air 1-720 1