HF Baseboard PMT Testing Ozlem Ozcelik G Aydin

HF Baseboard & PMT Testing Ozlem Ozcelik, G. Aydin, Y. Gunaydin, M. Martins Junior, M. Kaya, T. Martins, A. Mestvirishvili, F. Ozok, O. Oztirpan, U. Sen, S. Tekten, C. Uguruyar, E. A. Yetkin

Data Taking Procedure • The two darkboxes are tested at the same time • • 3 x 2 = 6 baseboards and 24 x 2 = 48 PMTs Total 216 baseboards should be tested We need 216/6 = 36 unit of time to finish testing all the baseboards and PMTs Started to test each setup 3 -full days (plan is given in the next slide) • • 36 x 3 = 108 days, 3 months Accounting the possible hardware and software problems we can finish testing all the PMTs and baseboards before January. 2

Data Taking Schedule Darkbox 01 Baseboard 19 Baseboard 18 Baseboard 24 Baseboard 7 Baseboard 1 Baseboard. X Baseboard 8 Baseboard 2 Baseboard. X Baseboard 10 Baseboard 3 Baseboard. X Darkbox 02 Baseboard 14 Baseboard 15 Baseboard 16 Baseboard 11 Baseboard 12 Baseboard 17 Baseboard 20 Baseboard 21 Baseboard 22 Baseboard. X 3

Shift Schedule @904 The Morning Shift (10: 00 - 15: 00) The Night Shift (20: 00 - 10: 00) Plan is to have total 1. 5 M (3 x 500 k) events for each configuration. Plan is to have a long LED run (60 M events) during the night. Single photo-electron runs SPE Run at 600 V SPE Run at 650 V SPE Run at 700 VSPE Run at 750 V • Night 1 at 550 V (200 LED Intensity) • Night 2 at 600 V (200 LED Intensity) • Night 3 at 650 V (200 LED intensity) LED Runs at different High Voltage Values LED Run (200 intensity) at 550 V LED Run (200 intensity) at 600 V LED Run (200 intensity) at 650 VLED Run (200 intensity) at 700 V The Evening Shift (15: 00 - 20: 00) Plan is to have total 1. 5 M (3 x 500 k) events for each configuration. LED scan at different HV values. • LED scan (150, 200, 255 (full)) at 550 V • LED scan (150, 200, 255 (full)) at 600 V • LED scan (150, 200, 255 (full)) at 650 V • LED scan (150, 200, 255 (full)) at 700 V 4

The Baseboard Configurations Darkbox 01 Baseboard 19 Baseboard 18 Baseboard 124 Darkbox 02 Baseboard 20 Baseboard 121 Baseboard 22 For the other baseboard configuration please check our twiki page: https: //twiki. cern. ch/twiki/bin/viewauth/CMS/HF_ROBOX_TESTS_904 5

Run Information • The distributions we present here belong to the following runs taken at 904. 550 V 600 V 650 V 700 V LED Intensity 150 Run 292 Run 308 Run 311 Run 319 LED Intensity 200 Run 295 Run 304 Run 318 More details can be found at our HF upgrade test elog. 6

• Each darkbox contains 3 baseboards. • PMTs are grouped in terms of their gains. • Instead of calculating average of 24 channels we calculated the averages with respect to each baseboards. 7

LED Analysis

HV Scan at LED Intensity 150 Darkbox 01 Darkbox 02 Baseboard 7 Baseboard 19 Baseboard 14 Baseboard 20 Baseboard 8 Baseboard 15 Baseboard 21 Baseboard 10 Baseboard 16 Baseboard 18 Baseboard 24 Baseboard 22 9

HV Scan at LED Intensity 200 Darkbox 01 Baseboard 19 Darkbox 02 Baseboard 14 Baseboard 20 Baseboard 8 Baseboard 15 Baseboard 10 Baseboard 16 Baseboard 18 Baseboard 24 Baseboard 21 Baseboard 22 10

Pedestal Analysis

Pedestal HV Scan Darkbox 01 Looking for the reason of these tails! 12

Pedestal HV Scan Darkbox 02 Baseboard 14 Baseboard 8 Baseboard 15 Baseboard 10 Baseboard 16 13

Summary • We well established the test setup at 904. • So far three sets of baseboards (total 18) with the PMTs were tested. • We finished to test the third one. • Several LED and SPE data were taken • More detailed analysis(SPE, LED, Pedestal) are on going. 14

Back Up Slides

HV Scan LED_Int 200 Darkbox 01 Mid. Gain PMT High Gain PMT Low. Gain PMT Mid. Gain PMT Low. Gain PMT High Gain PMT Low. Gain PMT Mid. Gain PMT High Gain PMT

HV Scan LED_Int 200 Darkbox 02 Mid. Gain PMT High Gain PMT Low. Gain PMT Mid. Gain PMT Low. Gain PMT High Gain PMT Low. Gain PMT Mid. Gain PMT High Gain PMT

HV_Scan Pedestal Darkbox 01 20

HV_Scan Pedestal Darkbox 02 21