Gauge calibration LHC integration Marton Ady 18 May

Gauge calibration LHC integration Marton Ady, 18 May 2018

Slide from Hao Zhang Leaking valve Movable Gauge inserted Gauge 1 Gauge 2 2

Data Slide from Hao Zhang Case Photon count is based on a region of interest Beam current (u. A) P_gauge 1(mbar) P_gauge 2(mbar) P_Mgauge(A) N_photon 1 56. 97 8. 4 e-8 9. 0 e-8 2. 3 e-10 5071. 835 2 56. 75 1. 5 e-7 2. 98 e-10 7055. 256 3 54. 72 2. 0 e-7 3. 56 e-10 8231. 401 4 52. 99 2. 5 e-7 4. 22 e-10 9782. 749 5 54. 65 3. 0 e-7 2. 9 e-7 4. 88 e-10 11507. 45 6 56. 33 3. 5 e-7 3. 4 e-7 5. 47 e-10 13282. 51 7 57. 56 4. 1 e-7 6. 09 e-10 17824. 52 8 56. 00 4. 5 e-7 6. 51 e-10 18863. 5 9 53. 50 5. 3 e-7 7. 51 e-10 21203. 42 10 54. 74 6. 0 e-7 5. 9 e-7 8. 35 e-10 23162. 51 11 55. 65 6. 5 e-7 6. 4 e-7 0. 90 e-9 25656. 09 12 55. 05 7. 0 e-7 0. 97 e-9 27155. 55 13 51. 05 7. 4 e-7 7. 3 e-7 1. 02 e-9 27373. 84 14 51. 05 7. 9 e-7 1. 10 e-9 28820. 56 15 52. 60 9. 0 e-7 8. 9 e-7 1. 24 e-9 31816. 6 3

Pumps 180 l/s 67 l/s 270 l/s 690 l/s 4

Leaking valve Gauge 1 Gauge 2 5

Q = 1 E-6 mbar. l/s 1. 8 E-9 mbar 1. 5 E-9 mbar 1. 2 E-9 mbar 6

• Just use Gauge 1 pressure Case 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Beam current P_gauge 1(mbar) P_gauge 2(mbar) P_Mgauge(A) (u. A) 56. 97 56. 75 54. 72 52. 99 54. 65 56. 33 57. 56 56 53. 5 54. 74 55. 65 55. 05 51. 05 52. 6 54. 05 8. 40 E-08 1. 50 E-07 2. 00 E-07 2. 50 E-07 3. 00 E-07 3. 50 E-07 4. 10 E-07 4. 50 E-07 5. 30 E-07 6. 00 E-07 6. 50 E-07 7. 00 E-07 7. 40 E-07 7. 90 E-07 9. 00 E-07 1. 00 E-06 9. 00 E-08 1. 50 E-07 2. 00 E-07 2. 50 E-07 2. 90 E-07 3. 40 E-07 4. 10 E-07 4. 50 E-07 5. 30 E-07 5. 90 E-07 6. 40 E-07 7. 00 E-07 7. 30 E-07 7. 90 E-07 8. 90 E-07 1. 00 E-06 2. 30 E-10 2. 98 E-10 3. 56 E-10 4. 22 E-10 4. 88 E-10 5. 47 E-10 6. 09 E-10 6. 51 E-10 7. 51 E-10 8. 35 E-10 9. 00 E-10 9. 70 E-10 1. 02 E-09 1. 10 E-09 1. 24 E-09 1. 37 E-09 N_photon pressure/ photon 5071. 835 7055. 256 8231. 401 9782. 749 11507. 45 13282. 51 17824. 52 18863. 5 21203. 42 23162. 51 25656. 09 27155. 55 27373. 84 28820. 56 31816. 6 36052. 85 1. 66 E-11 2. 13 E-11 2. 43 E-11 2. 56 E-11 2. 61 E-11 2. 64 E-11 2. 30 E-11 2. 39 E-11 2. 50 E-11 2. 59 E-11 2. 53 E-11 2. 58 E-11 2. 70 E-11 2. 74 E-11 2. 83 E-11 2. 77 E-11 7

Unify w/ bypass Dry scroll pump 8

9

Two pumps 6 E-6 mbar 67 l/s 1. 4 E-10 mbar 270 l/s 3 E-8 mbar 10

Bypass 300 l/s 3 E-6 mbar 1 E-8 mbar 6 E-6 mbar 11

300 l/s Sticking=80% 35% 70% 15% 30% 50% 12

Smaller bypass (DN 16) 300 l/s 2 E-6 mbar 1 E-8 mbar 7 E-6 mbar 13

One pump only 300 l/s 1 E-6 mbar 6 E-9 mbar 7 E-6 mbar 14

Two strong pumps 6 E-6 mbar 270 l/s 1 E-8 mbar 5 E-11 mbar 270 l/s 15

Skim 1 -Skim 2 -Skim 3+ Bypass 6. 0 E-6 2. 5 E-6 1. 0 E-8 Small bypass 6. 7 E-6 2. 2 E-6 1. 0 E-8 One pump 6. 5 E-6 1. 4 E-6 6. 0 E-9 Two pumps 6. 0 E-6 3. 0 E-8 1. 4 E-10 Two strong pumps 6. 0 E-6 1. 0 E-8 5. 0 E-11 16