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  Testbeam at DESY in July 2025, Page 14 of 14  Not logged in ELOG logo
Entry  Thu Jul 3 09:06:09 2025, tb-crew, thr scan, , W8-2 1E15, Topside, 4.2, 0.94, -400, , Good, , ,  
continuing from thr = 0.99V again
Entry  Thu Jul 3 09:10:55 2025, tb-crew, thr scan, , W8-2 1E15, Topside, 4.2, 0.99, -400, , Good, , ,  
no proper beam atm
Entry  Thu Jul 3 14:46:26 2025, tb-crew, thr scan, , W3-8 5E15, Topside, 4.2, 0.95, -50, , Good, , ,  
changed DUT
Entry  Thu Jul 3 14:57:35 2025, tb-crew, bias scan, , W3-8 5E15, Topside, 4.2, 0.95, -25, , Good, , ,  
chip seems noisy, no good Correlations
Entry  Thu Jul 3 14:59:49 2025, tb-crew, bias scan, , W3-8 5E15, Topside, 4.2, 0.95, -25, , Good, , ,  
changed thr to reduce noise
Entry  Thu Jul 3 15:03:03 2025, tb-crew, bias scan, , W3-8 5E15, Topside, 4.2, 0.96, -25, , Good, , ,  
changed scan time to 5 min
Entry  Thu Jul 3 15:29:45 2025, tb-crew, bias scan, , W3-8 5E15, Topside, 4.2, 0.96, -200, , Good, , ,  
increased compliance to 200uA
Entry  Thu Jul 3 15:32:40 2025, tb-crew, bias scan, , W3-8 5E15, Topside, 4.2, 0.96, -400, , Good, , ,  
restart from -200V
Entry  Thu Jul 3 15:58:34 2025, tb-crew, bias scan, , W3-8 5E15, Topside, 4.2, 0.96, -400, , Good, , ,  
hit compliance at 400V
Entry  Thu Jul 3 16:11:34 2025, tb-crew, bias scan, , W3-8 5E15, Topside, 4.2, 0.96, -350, , Good, , ,  
can't set compliance to values > 200uA via producer, trying manually now
Entry  Thu Jul 3 16:34:56 2025, tb-crew, bias scan, , W3-8 5E15, Topside, 4.2, 1.1, -400, , Good, , ,  
increased threshold
Entry  Thu Jul 3 17:44:29 2025, tb-crew, bias scan, , W3-8 5E15, Topside, 4.2, 1.09, -400, , Good, , ,  
rerun bias scan with increased thr (hopefully no noise)
400V at thr = 970mV yielded 24% effi
Entry  Thu Jul 3 21:06:35 2025, tb-crew, bias scan, , W3-8 5E15, Topside, 4.2, 0.97, -500, , Good, , ,  
changing DUT now
Entry  Thu Jul 3 21:07:09 2025, tb-crew, bias scan, , W3-5 2E15, Topside, 4.2, 0.97, -500, , Good, , ,  
changing DUT now
Entry  Fri Jul 4 09:04:59 2025, tb-crew, thr scan, , W3-5 2E15, Backside, 4.2, 1.1, -400, , Good, , ,  
another day in the hut <3
Entry  Fri Jul 4 10:04:07 2025, tb-crew, ROI test, , W8-3 2E15, Backside, 4.2, 0.98, -50, , Good, , ,  
changed DUT
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