mta-beam, solenoid, cavity
DESCRIPTION
HP-Vacuum, Cryo-RT RF Cavity Milorad Popovic FNAL. MTA-Beam, Solenoid, Cavity. Motivation. Design cavity than can be operated & tested : As Open or Closed Cell Cavity Under High Pressure ~1000psi or Vacuum ~10e-7 With 400MeV Proton Beam At Room Temperature At Liquid Nitrogen Temperature - PowerPoint PPT PresentationTRANSCRIPT
f MTA-Beam, Solenoid, CavityMTA-Beam, Solenoid, Cavity
HP-Vacuum, Cryo-RTRF CavityMilorad Popovic
FNAL
MuCool Test Area RF Workshop, August 22, 2007 — Fermilab
f
MuCool Test Area RF Workshop 2
MotivationMotivation
Design cavity than can be operated &
tested: As Open or Closed Cell Cavity
Under High Pressure ~1000psi or Vacuum ~10e-7
With 400MeV Proton Beam
At Room Temperature
At Liquid Nitrogen Temperature
With ~ 4 Tesla Magnetic Field
f Test Results with Mark II
f Test Results with Mark II
f Cavity, 806.8MHz, gap 12.6 Cavity, 806.8MHz, gap 12.6
805 HPCavity, pillbox F = 806.85257 MHz
C:\Documents and Settings\popovic\Desktop\CavitySBIR\HPCavity\805Cavity\HPCAV.AM 7-20-2007 20:00:38
0
1
2
3
4
5
6
7
8
9
10
11
12
0
1
2
3
4
5
6
7
8
9
10
11
12
0 2 4 6 8 10 12 14 16
f Cavity, 800.0MHz, gap 12.4Cavity, 800.0MHz, gap 12.4
805 HPCavity, pillbox F = 800.02454 MHz
C:\Documents and Settings\popovic\Desktop\CavitySBIR\HPCavity\805Cavity\HPCAV.AM 7-21-2007 18:00:22
0
1
2
3
4
5
6
7
8
9
10
11
12
0
1
2
3
4
5
6
7
8
9
10
11
12
0 2 4 6 8 10 12 14 16
f Cavity, Mark IIICavity, Mark III
f Pull out, 0.2cmPull out, 0.2cm805 HPCavity, pillbox F = 810.9213 MHz
C:\Documents and Settings\popovic\Desktop\CavitySBIR\HPCavity\805Cavity\HPCAV.AM 8-19-2007 19:32:44
0
2
4
6
8
10
12
14
16
18
20
0
2
4
6
8
10
12
14
16
18
20
-10 -5 0 5 10
MuCool Test Area RF Workshop August 22, 2007 — Fermilab
8
f Push in, 0.2cmPush in, 0.2cm805 HPCavity, pillbox F = 802.67458 MHz
C:\Documents and Settings\popovic\Desktop\CavitySBIR\HPCavity\805Cavity\HPCAV.AM 8-19-2007 19:35:28
0
2
4
6
8
10
12
14
16
18
20
0
2
4
6
8
10
12
14
16
18
20
-10 -5 0 5 10
MuCool Test Area RF Workshop August 22, 2007 — Fermilab
9
f Sliding plate, -1cmSliding plate, -1cm805 HPCavity, pillbox F = 800.83219 MHz
C:\Documents and Settings\popovic\Desktop\CavitySBIR\HPCavity\805Cavity\HPCAV.AM 8-19-2007 20:50:34
0
2
4
6
8
10
12
14
16
18
20
0
2
4
6
8
10
12
14
16
18
20
-10 -5 0 5 10
MuCool Test Area RF Workshop August 22, 2007 — Fermilab
10
f Sliding plate, +1cmSliding plate, +1cm805 HPCavity, pillbox F = 812.24775 MHz
C:\Documents and Settings\popovic\Desktop\CavitySBIR\HPCavity\805Cavity\HPCAV.AM 8-19-2007 20:51:58
0
2
4
6
8
10
12
14
16
18
20
0
2
4
6
8
10
12
14
16
18
20
-10 -5 0 5 10
MuCool Test Area RF Workshop August 22, 2007 — Fermilab
11
f Closed Cell, Sliding plateClosed Cell, Sliding plate
MuCool Test Area RF Workshop August 22, 2007 — Fermilab
12
805 HPCavity, pillbox F = 793.2976 MHz
C:\Documents and Settings\popovic\Desktop\CavitySBIR\HPCavity\805Cavity\HPCAV.AM 8-21-2007 14:44:36
0
2
4
6
8
10
12
14
0
2
4
6
8
10
12
14
-10 -8 -6 -4 -2 0 2 4 6 8 10
f Closed Cell, Sliding plate, 3cmClosed Cell, Sliding plate, 3cm
MuCool Test Area RF Workshop August 22, 2007 — Fermilab
13
805 HPCavity, pillbox F = 808.90913 MHz
C:\Documents and Settings\popovic\Desktop\CavitySBIR\HPCavity\805Cavity\HPCAV.AM 8-21-2007 14:46:20
0
2
4
6
8
10
12
14
16
0
2
4
6
8
10
12
14
16
-10 -8 -6 -4 -2 0 2 4 6 8 10 12
f From SuperFishFrom SuperFish
Field normalization (NORM = 1): EZEROT = 7.57000 MV/m
Frequency = 812.24775 MHz Stored energy = 4.8554590 Joules Using standard room-temperature copper. Power dissipation = 999.4979 kW Q = 24792.3 Shunt impedance = 46.594
MOhm/m r/Q = 181.305 Ohm Average magnetic field on the outer wall = 25422.6
A/m Maximum H (at Z,R = 11,4) = 62077.6 A/m Maximum E (at Z,R = 7.42678,3.55781) = 63.5013 MV/m, 2.42769 Kilp.
MuCool Test Area RF Workshop August 22, 2007 — Fermilab
14
f RF Power RF Power
Segment Zend Rend Emax Power (cm) (cm) (MV/m) (kW) ---------------------------------------------------------- -14.000 0.0000 1 -14.000 2.8000 0.1098 7.9891E-06 2 -7.0000 2.8000 19.52 0.1439 3 -7.0000 4.0000 62.27 10.90 4 -10.000 4.0000 42.74 89.79 5 -10.000 7.0000 5.114 86.31 6 -10.000 12.000 5.110 121.6 7 11.000 12.000 1.645 381.5 8 11.000 7.0000 5.115 121.8 9 11.000 4.0000 5.146 86.41 10 8.0000 4.0000 38.83 89.92 11 8.0000 2.8000 63.50 10.96 12 14.000 2.8000 21.42 0.1438 ---------------------------------------------------------- Total 999.5
MuCool Test Area RF Workshop August 22, 2007 — Fermilab
15
f Questions Questions
Mechanical Design - SafetyRF Engineering DesignDiagnostics;Rf pickupFiber, for light pickupX-ray detectors (pin diodes?)…..Do we wont larger beam pipe?Do we wont large accelerating gap?Do we wont highest peak E field?Do we wont as little as possible of H gas?Do we wont different materials in the beam?All these tests cannot be done like last time, over few weekends, can
we get longer periods of time, weeks ..!Do we wont short/long beam pulses?Is there more tests to be done?…....
MuCool Test Area RF Workshop August 22, 2007 — Fermilab
16