CNAO (Centro Nazionale di Adroterapia Oncologica) CNAO (Centro Nazionale di Adroterapia Oncologica) Attivita’ della Sezione di Milano Attivita’ della Sezione di Milano
LASA 5.07.2007 C. De Martinis Attivita’ INFN-MI 2007/2008
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L’adroterapia consente di trattare casi “difficili”
L’adroterapia consente di trattare casi “difficili”
VANTAGGI UNIVERSALMENTE RICONOSCIUTI VANTAGGI UNIVERSALMENTE RICONOSCIUTI V N GGI UNIVERS LMEN E RI ONOS IU I V N GGI UNIVERS LMEN E RI ONOS IU I
- risparmio dei tessuti sani circostanti
- migliore conformazione al volume tumorale
TUMORI RADIORESISTENTI
-maggiore efficacia biologica degli ioni 12C rispetto a : radioterapia convenzionale (ACCERTATA)
LASA 5.07.2007 C. De Martinis Attivita’ INFN-MI 2007/2008
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p ( E )
protoni (IPOTIZZATA, in attesa di validazione clinica )
Vantaggio macroscopico dell’adroterapi Vantaggio macroscopico dell’adroterapi
Per il controllo Per il controllo
dei tumori dei tumori radioresistenti
radioresistenti 25 cm25 cm
radioresistenti radioresistenti
ioni carbonio 400 MeV*A
25 cm
Tumour target 25 cm
Volume tumorale
protoni 200 MeV
Beam of hadrons that slows down in matter
Fasci di adroni
che rallentano nei tessuti
Photons Protons
10 MV X rays
protons carbon ions
Photons Protons
10 MV raggi X
protoni ioni carbonio
Confronto tra fasci singoli
LASA 5.07.2007 C. De Martinis Attivita’ INFN-MI 2007/2008
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The CNAO The CNAO
FFThe synchrotron
Injector by LNL
RF-Cavity by Sez. Mi Ion sources
by LNS Magnets,PS,vacuum
tech plants Rprot
by LNS
tech.plants,Rprot.
Engineerig by LNF
Vertical magnet and
LASA 5.07.2007 C. De Martinis Attivita’ INFN-MI 2007/2008
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Monitoring ,scanning systems by Sez. To
V e r t
g
scanning magnets
by Sez. Ge
Power Supply for DC Bias of VITROVAC 0 70V d 0 50
CAVITY
0-70V dc, 0-50
RF OUT Anode Power Supply
12kV dc, 10 A
Screen Grid Power Suplly 1500V dc, 10 A
12kV dc, 10 A
THALES RS 1084 CJ
Control Grid Power Supply 600V dc 0 6 A
RF IN 600V dc, 0.6 A
Filament Power Supply 0-12 V, 200A, 50Hz RF Driver AMPLIFIER
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Achievements Achievements
z
The RF vacuum chamber has The RF vacuum chamber has been completely disassembled in order to insert two
additional Vitrovac disks ( this should permit to reach the should permit to reach the lower frequency of 300 kHz)
LASA 5.07.2007 C. De Martinis Attivita’ INFN-MI 2007/2008
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Frequency range 300 kHz - 4.0 MHz
RF Specifications (as per 30/07/05)
RF Specifications (as per 30/07/05) Achievements Achievements
Max error and resolution on frequency
10 Hz
Maximum rate of change of frequency 7 MHz/s
Vgaprange 10 V – 3 kV
Max error and resolution on Vgap 1%
Maximum rate of change of Vgap 20 kV/s
Noise & perturbation on Vgap signal To satisfy the requirements on the maximum error on the Vgap,
th i h ld b l th 1%
the noise should be less than 1%.
Preliminary measurements have shown noise of about 2.5 % (at 1 MHz and 400 V)
Phase stability required 0.1°
Phase of the signals at the input of the driver amplifier 180° 0 1°
Phase of the signals at the input of the driver amplifier 180 0.1
Detuning phase error 6° max (stability should be within 0.5°)
Response time of Vitrovac ?
Response time of Vitrovac Power Supply ?
Input range of the Vitrovac Power Supply 0-10 V
Input range of the driver amplifier 0-10 V
Acceleration Time Protons, 7 to 60 MeV: 270 ms
Protons, 7 to 250 MeV: 482 ms C 7 to 120 MeV: 490 ms
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C, 7 to 120 MeV: 490 ms C, 7to 400 MeV: 734 ms
Achievements Achievements
z
RF cycles definition C b I (400M V) Carbon Ions (400MeV)
3.0 3000
Trapping Acceleration Extraction End
2.0 2.5
2000 2500
Phase jump
1.5
Voltage [kV] 1500
requency [kHz]
0 5 1.0
500 1000
Fr
0.0 0.5
0 200 400 600 800 1000 1200 1400 1600 1800
0 500 Voltage
Frequency
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Cavita’ RF
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1 m