US CMS PNPI FAST Site HV Power Supply

US CMS PNPI FAST Site HV Power Supply Tests (CSC-DAQ test results) PNPI : A. Denisov, A. Petrunin, L. Shchipunov, S. Vavilov UFL : V. Barashko, A. Madorsky GATCHINA, PNPI July, 2004 9/25/2020 A. Denisov, PNPI 1

US CMS PNPI FAST Site HV Power Supply Test The test Tasks: 1. 1. Perform the set DAQ tests with CAEN HV System and EMU HV System and compare results. 2. EMU HV System noise immunity tests. 9/25/2020 A. Denisov, PNPI 2

US CMS PNPI FAST Site HV Power Supply Test 1. Perform the set DAQ tests … Test 1. CHAMBER ME 4/1 -18 Step 1. Nominal CAEN HV System a. Test 11(anode count rate) at 3800/3600 V b. Test 13 (anode analog noise) at 0 V c. Test 15 (SCA-path analog noise) at 0 V d. Test 18 (comparator count rate) at 3800/3600 V e. Test 11’ with CS-137 source at 3800/3600 V, f. Test 18’ with CS-137 source at 3800/3600 V g. HV current measurements with CS-137 Step 2. EMU CAEN HV System Perform the same test set as in Step 1. Step 3. EMU CAEN HV PS + 8 CSC ME 4/1 connected Perform the same test set as in Step 1. 9/25/2020 A. Denisov, PNPI 3

US CMS PNPI FAST Site HV Power Supply Test HV D I S T R I B U T ion MASTER Board Primary Power supply CAEN C S C M E 4 1 OSC R G 9/25/2020 ME 4 -1 -18 A. Denisov, PNPI FAST DAQ 4

US CMS PNPI FAST Site HV Power Supply Test 9/25/2020 A. Denisov, PNPI 5

P N P I Different outputs (test #11) Test #11 Single rate HV = 9/25/2020 3600 V File. dat # Output # Single rate mean 1 2642 CAEN 9. 188 2. 06 1 2643 CAEN 9. 097 2. 06 2 2644 E 9. 292 2. 21 2 2646 E 9. 181 2. 12 3 2647 D 9. 139 2. 18 3 2674 D 8. 951 2. 04 repeat 3 2679 D 9. 076 2. 25 repeat 3 2681 D 8. 882 2. 10 repeat 4 2648 C 9. 187 2. 21 5 2649 B 9. 284 2. 43 6 2650 A 9. 208 2. 32 7 2651 9 9. 187 2. 25 8 2652 8 9. 111 2. 28 A. Denisov, 9 PNPI 2653 7 9. 139 2. 22 CMS EMU, PNPI, Jul. 23, 2004 A. Denisov RMS repeat 6

AFEB Counting rate( test #11) Rate(Hz) v. s. Wire Group 9/25/2020 CAEN A. Denisov, PNPI P N P I UF-PNPI 7

AFEB Analog Noise( test#13) P N P I Noise v. s. Wire Group CAEN 9/25/2020 A. Denisov, PNPI UF-PNPI 8

US CMS PNPI FAST Site HV Power Supply Test CFEB comparator rate(Hz) v. s. strip number CAEN 9/25/2020 A. Denisov, PNPI UF-PNPI 9

US CMS PNPI FAST Site HV Power Supply Test SCA-path analog noise v. s. Wire Group 9/25/2020 CAEN A. Denisov, PNPI UF-PNPI 10

US CMS PNPI FAST Site HV Power Supply Test#11 Cs 137 9/25/2020 CAEN A. Denisov, PNPI UF-PNPI 11

US CMS PNPI FAST Site HV Power Supply Test#11 Cs 137 9/25/2020 CAEN A. Denisov, PNPI UF-PNPI 12

US CMS PNPI FAST Site HV Power Supply Test#11 Cs 137 9/25/2020 CAEN A. Denisov, PNPI UF-PNPI 13

P N P I CFEB Noise test(#15) 2. EMU HV System noise immunity tests. 2. 1 Pulse generator in the ground circuit Up to 5 V pulse 1 – 100 k. Hz, rt=50 n. Sec, With=1 u. Sec 2. 2 AC /DC Voltage difference between ground connections, AC 50 Hz, up to 1 V. 2. 3. AC load jumps : 4 k. W wending transformer (just near system <10 m). Test 11 without/low HV as sensor of interference in all cases (20 fq threshholds of AFEBS) 9/25/2020 A. Denisov, PNPI CMS EMU, PNPI, Jul. 23, 2004 14 A. Denisov

P N P I CFEB Noise test(#15) Resume 1. CSC DAQ Tests parameters (count rates, noise) with EMU HV System have ~ the same values as with CAEN HV system. 2. System has good protection from pulse interference (better than 5 V), AC net interference (better than 1 V), AC spark interference. 3. System has equal to CAEN possibility for current measurement. 9/25/2020 A. Denisov, PNPI CMS EMU, PNPI, Jul. 23, 2004 15 A. Denisov