The LHC Beam Loss Monitoring System Status Availability
The LHC Beam Loss Monitoring System Status, Availability and Work-in-Progress C. Zamantzas for the BLM team The LHC Beam Loss Monitoring System
Availability of Monitors n n Points under test: 2, 3, 7, 8 Monitors under test: 2090 Ø 12/26/2021 Non operational: 6 Point Ionization Chamber Secondary Emission Monitor 2 464 41 3 454 30 7 514 98 8 448 41 total 1880 210 The LHC Beam Loss Monitoring System 2
New Monitors in MKI of R 8 n Operational since 20/08 Last minute request n Enormous help from CO/DM n 12/26/2021 The LHC Beam Loss Monitoring System 3
Highest Losses Recorded Number of ICs above a level (Gy/s) between 24/08 14: 00 – 25/08 09: 00 3. 5 E-3 > 44 channels > 1. 0 E-3 > 40 channels > 1. 0 E-4 > 200 channels > 1. 0 E-5 12/26/2021 The LHC Beam Loss Monitoring System 4
Highest Losses Recorded Expert Name 12/26/2021 Entries MIN. Value (Gy/s) MAX. Value (Gy/s) BLMEI. 4 R 7. B 2 I 1_TCSM. A 4 R 7. B 2 2448 1. 07850000 E-06 3. 50655460 E-03 BLMEI. 4 R 7. B 2 I 1_TCSG. A 4 R 7. B 2 2834 8. 65800000 E-07 3. 37483420 E-03 BLMEI. 4 R 7. B 2 I 1_TCSM. B 4 R 7. B 2 2354 1. 61150000 E-06 3. 37070240 E-03 BLMEI. 4 R 7. B 1 E 1_TCSM. A 4 R 7. B 1 2355 4. 21600000 E-06 3. 33683810 E-03 BLMEI. 6 L 7. B 2 I 1_TCLA. A 6 L 7. B 2 2465 2. 07000000 E-06 3. 21246140 E-03 BLMEI. 4 L 7. B 2 I 1_TCSM. A 4 L 7. B 2 2366 4. 28000000 E-08 3. 18760620 E-03 BLMEI. 4 R 7. B 2 I 1_TCSG. B 4 R 7. B 2 2353 4. 48250000 E-06 3. 18399920 E-03 BLMEI. 6 R 7. B 2 I 1_TCSM. A 6 R 7. B 2 3353 4. 01570000 E-06 3. 16119890 E-03 BLMEI. 4 R 8. B 2 E 1_TDI 2971 1. 29530000 E-06 3. 14473690 E-03 BLMEI. 5 R 7. B 2 I 1_TCSM. A 5 R 7. B 2 2868 2. 03270000 E-06 3. 11422410 E-03 BLMEI. 6 R 7. B 1 E 1_TCLA. A 6 R 7. B 1 3354 4. 93960000 E-06 3. 10704330 E-03 BLMEI. 6 L 7. B 2 I 1_TCSM. 6 L 7. B 2 2469 2. 13630000 E-06 3. 09281710 E-03 BLMEI. 4 L 2. B 1 E 1_TDI 1423 3. 02400000 E-07 3. 05645050 E-03 BLMEI. 5 L 3. B 1 I 1_TCSM 1495 2. 29200000 E-07 3. 00095690 E-03 BLMEI. 4 R 7. B 1 E 1_TCSG. A 4 R 7. B 1 2375 1. 59220000 E-06 2. 99350960 E-03 BLMEI. 6 R 7. B 2 I 1_TCP. C 6 R 7. B 2 3402 3. 45230000 E-06 2. 99208030 E-03 BLMEI. 6 L 7. B 2 I 1_TCSG. 6 L 7. B 2 2472 2. 11420000 E-06 2. 87581780 E-03 BLMEI. 4 L 7. B 2 I 1_TCSG. A 4 L 7. B 2 2362 2. 07550000 E-06 2. 82434960 E-03 BLMEI. 5 R 7. B 1 E 1_TCSM. B 5 R 7. B 1 2384 9. 61100000 E-07 2. 76898570 E-03 BLMEI. 5 R 7. B 1 E 1_TCSG. B 5 R 7. B 1 2441 1. 81590000 E-06 2. 76099290 E-03 The LHC Beam Loss Monitoring System 5
Problematic Monitors Expert Name Entries MIN. Value MAX. Value 1. 90128326 E-02 0. 00000000 E+00 2. 92430878 E-02 0. 00000000 E+00 1. 43802643 E-02 0. 0000 E+00 1. 48628235 E-02 0. 00000000 E+00 2. 64442444 E-02 0. 0000 E+00 1. 08672333 E-01 9. 56432343 E-02 1. 50558472 E-02 5. 76175690 E-02 0. 0000 E+00 1. 08093262 E-01 1. 13883972 E-02 1. 14849091 E-02 0. 00000000 E+00 0. 0000 E+00 1. 79608536 E-01 1. 08479309 E-01 2. 96484375 E-01 1. 67448044 E-01 7. 53757477 E-02 1. 43609619 E-01 1. 29615402 E-01 1. 27492142 E-01 2. 26416779 E-01 2. 23038864 E-01 1. 53067780 E-01 6. 34082794 E-02 1. 35406113 E-01 2. 94361115 E-02 3. 01116943 E-02 6. 34082794 E-02 6. 20571136 E-02 4. 97035980 E-02 0. 00000000 E+00 2. 93106461 E-01 1. 71405029 E-01 1. 63394547 E-01 3. 90570401 E-02 POINT 2 BLMEI. 10 L 2. B 2 I 27_MBA BLMQI. 9 R 2. B 1 I 1_MQM BLMQI. 9 R 2. B 1 I 2_MQM BLMQI. 9 R 2. B 1 I 3_MQM BLMQI. 9 R 2. B 2 E 1_MQM BLMQI. 9 R 2. B 2 E 2_MQM BLMQI. 9 R 2. B 2 E 3_MQM 37433 1252 1252 BLM 2 I. 10 R 3. B 1 I 22_MBB BLM 2 I. 9 R 3. B 1 I 3_MQ_MQ BLM 2 I. 10 R 3. B 1 I 3_MQ_MQ BLM 2 I. 11 R 3. B 1 I 21_MBB BLM 2 I. 10 R 3. B 1 I 21_MBA BLM 2 I. 11 R 3. B 1 I 3_MBA BLM 2 I. 11 R 3. B 1 I 22_MBB BLM 2 I. 13 R 3. B 1 I 22_MBB BLM 2 I. 11 R 3. B 1 I 23_MBB BLM 2 I. 10 R 3. B 1 I 21_MBB BLM 2 I. 11 R 3. B 1 I 22_MBA BLM 2 I. 10 R 3. B 1 I 3_MBA BLM 2 I. 13 R 3. B 1 I 21_MBB_MBA BLM 2 I. 13 R 3. B 1 I 21_MBA BLM 2 I. 13 R 3. B 1 I 22_MBA BLM 2 I. 9 R 3. B 1 I 24_MBB BLM 2 I. 11 R 3. B 1 I 21_MBA BLM 2 I. 9 R 3. B 1 I 21_MBA 37503 37495 37493 37492 37490 37489 37487 37483 37471 37466 37455 37435 37340 BLMEI. 11 L 7. B 2 I 3_LEIR BLM 2 I. 11 L 7. B 2 I 24_MBA BLMEI. 11 L 7. B 2 I 25_MBB BLMQI. 28 L 7. B 1 E 2_MQ 3265 3254 3257 2329 POINT 3 POINT 7 POINT 8 All OK !! 12/26/2021 The LHC Beam Loss Monitoring System 6
Data to avoid in the Logging DB Avoid using data from the DB between 22/08, 23: 30 – 23/08, 11: 30 if absolutely needed: n 12/26/2021 Sent a list of monitors and we will sent you correction factors The LHC Beam Loss Monitoring System 7
Beam Dump Requests n n n 12/26/2021 No requests on the UNMASKABLE Several (correct) MASKABLE Many entries in the DB, (one per Concentrator restart). The LHC Beam Loss Monitoring System 8
Maskable Beam Permit n 1. 3 sec integration triggered Masked Beam Permit ü 12/26/2021 Correct triggering The LHC Beam Loss Monitoring System 9
Maskable Beam Permit n 1. 3 sec integration triggered Masked Beam Permit ü 12/26/2021 Correct triggering The LHC Beam Loss Monitoring System 10
Energy Ramp n Energy ramp vs. Thresholds change n n 12/26/2021 Energy IN - from the BEM. Level OUT - internal translation of beam energy to 32 levels The LHC Beam Loss Monitoring System 11
Energy Rx/Tx n Re-writing (slowly) both VHDL components n n Continuous test – comparison with old Need to be informed when energy ramps happen Energy reception n n SR 2 - New code SR 3 - Old code No difference seen 12/26/2021 Courtesy of J. Emery The LHC Beam Loss Monitoring System 12
Modulation test Courtesy of J. Emery n It’s purpose is to find disconnected channels n 12/26/2021 First tests look good The LHC Beam Loss Monitoring System 13
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