the 10 MeV injector linac the new Building future plans
the 10 MeV injector linac the new Building future plans
the 10 MeV injector linac the new Building future plans
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Status of <strong>the</strong> IASA<br />
Race Track Microtron Facility:<br />
<strong>the</strong> <strong>10</strong> <strong>MeV</strong> <strong>injector</strong> <strong>linac</strong><br />
<strong>the</strong> <strong>new</strong> <strong>Building</strong><br />
<strong>future</strong> <strong>plans</strong><br />
Andreas Karabarbounis<br />
UoA & IASA - Greece<br />
LOWq03 7-18-03<br />
http://www.iasa.gr
Layout of <strong>the</strong> talk<br />
• Presenting IASA<br />
• The <strong>10</strong> <strong>MeV</strong> <strong>injector</strong> <strong>linac</strong><br />
• Future <strong>plans</strong><br />
• The <strong>new</strong> building
The Institute of Accelerating<br />
Systems and Applications (IASA)<br />
An Autonomous Research Institute operating under <strong>the</strong><br />
auspices of <strong>the</strong> Ministry of Education.<br />
Participating Academic Units:<br />
The National & Capodistrian University of A<strong>the</strong>ns<br />
• School of Medicine<br />
• Department of Informatics<br />
• Department of Physics<br />
The National Technical University of A<strong>the</strong>ns<br />
• Department of Electrical & Computer Engineering<br />
• Department of Chemical Engineering<br />
• Department of General Science – Physics Division<br />
IASA http://www.iasa.gr
Brief Historical Background<br />
Aug – 94<br />
Jan – 95<br />
Jul – 95<br />
Sep - 95<br />
Nov -95<br />
Jan - 96<br />
Jun - 96<br />
Apr - 97<br />
Oct-97<br />
IASA Founded<br />
First managerial structure established<br />
NIST RTM disassembled and shipped to GR<br />
1st International Technical review<br />
Cascade Option chosen<br />
<strong>10</strong>0 keV Injector Maquette Launched<br />
U. of Illinois RTM Equipment shipped to GR<br />
First Beam out of <strong>injector</strong> Maquette<br />
Beneficial occupancy of Maquette <strong>Building</strong>
Oct-97<br />
Oct-98<br />
Nov-98<br />
Sep-99<br />
Oct-99<br />
Apr-02<br />
Nov-02<br />
Jun-03<br />
2nd International Technical review<br />
<strong>10</strong>0 keV Injector Maquette Completed<br />
Plans for a <strong>10</strong> <strong>MeV</strong> <strong>linac</strong><br />
Beneficial Occupancy of an Exp. Hall<br />
3rd International Technical review<br />
Upgrade to <strong>10</strong> <strong>MeV</strong> Maquette Initiated<br />
New building approved<br />
Excavations completed
Mission of <strong>the</strong> Institute<br />
To support Research and post graduate studies<br />
in all <strong>the</strong>matic areas where accelerators and<br />
related technologies play a role.<br />
• Nuclear & Particle Physics<br />
• Medicine<br />
• Materials Science<br />
• Informatics and Computer Science<br />
• Instrumentation<br />
• Archaeometry & Archaeological Preservation<br />
• Food preservation<br />
• Environmental Science
IASA will be an<br />
•open facility to researchers both<br />
Nationally and Internationally<br />
•a PAC governed user facility<br />
•need to have User Group meetings in<br />
order to find out Nuclear Physics<br />
community interests and priorities
Institutional and Geographical<br />
Facilities in Greece<br />
Setting<br />
• Several medical electron / proton Linacs<br />
• The “old” Tandem of “Demokritos”<br />
Regional Facilities<br />
• Nothing comparable in <strong>the</strong> Eastern Mediterranean<br />
Basin or <strong>the</strong> Balkan Peninsula<br />
• Nearest important facilities in Italy
International Links<br />
Formal Agreements with:<br />
• University of Illinois (USA)<br />
• Massachusetts Institute of Technology (USA)<br />
• Lomonosov - Moscow State University (RUSSIA)<br />
• Deutsches Electronen Synchrotron- DESY (Germany)<br />
• University of Sao Paolo (Brazil)<br />
• Yerevan University (Armenia)<br />
• The Joint Institute for Nuclear Research (Russia)<br />
• Jefferson Laboratory (USA)<br />
• Institute for Laser Plasma & Radiation Physics (Romania)<br />
Cooperation with:<br />
• Mainz (Germany)<br />
• Saclay (France)<br />
• Los Alamos National Laboratory (USA)<br />
• National Institute of Standards and Technology - NIST (USA)<br />
• CERN
Europe<br />
FYROM<br />
Greece
Greece<br />
ATHENS<br />
Santorini
Map of A<strong>the</strong>ns<br />
Center of<br />
A<strong>the</strong>ns<br />
NTUA<br />
Acropolis<br />
UoA Campus<br />
& IASA
One major task for IASA is building<br />
an electron accelerator
Microtron Variations<br />
• Classical Microtron<br />
• Double Sided Microtron<br />
(π-2)∆R=νλ<br />
• RaceTrack Microtron<br />
• Hexatron<br />
2π∆R=νλ<br />
(π/3-sinπ/3)2∆R=νλ
From Classical to<br />
RaceTrack Microtron<br />
MICROTRON CONDITION<br />
2π∆R = νλ<br />
d<br />
H<br />
MAGNETIC<br />
FIELD B<br />
LINAC<br />
MAGNETIC<br />
FIELD B
Mainz Microtron (MAMI)<br />
• 3 stage cascade microtron<br />
• Injection Energy = 3.5 <strong>MeV</strong><br />
• RTM1 = 14.4 <strong>MeV</strong> (18 recirculations)<br />
• RTM2 = 180 <strong>MeV</strong> (51 recirculations)<br />
• RTM3 = 855 <strong>MeV</strong> (90 recirculations)<br />
+<br />
MAMI C
So we finally adopted a :<br />
• 2 stage cascade CW RT Microtron<br />
• Injection Energy = 6.5 <strong>MeV</strong><br />
• RTM1 = 41 <strong>MeV</strong> (26 turns)<br />
• RTM2 = 240 <strong>MeV</strong> (25 turns)<br />
•RTM2 = 650 <strong>MeV</strong> (73 turns)<br />
•@<strong>10</strong>0 µA (max 650µA)<br />
Polarized source<br />
E. Stiliaris et al., Nucl. Phys. A 663(2000) <strong>10</strong>95c<br />
& IASA internal reports & CDR
Emittance<br />
Injection<br />
RTM1<br />
RTM2<br />
ε x = ε y < 2π mm mrad @ <strong>10</strong>0 keV measured<br />
ε tr = 0.1π mm mrad @ <strong>10</strong> <strong>MeV</strong><br />
ε L = 6.5π keV deg<br />
Eigenellipse in output orbit<br />
α =-1.02<br />
β = 0.27 deg/keV<br />
γ = 7.48 keV/deg<br />
Eigenellipse in output orbit<br />
α =-0.91<br />
(-0.91)<br />
β = 0.045 (0.012) deg/keV<br />
γ = 40.2 (88.4) keV/deg
The situation now…….<br />
• What we have<br />
(NIST & UIUC)<br />
• Linacs<br />
• RF – Klystrons (2)<br />
• End magnets (2 pairs)<br />
• Diagnostics<br />
• Magnets<br />
• Power supplies<br />
• Cooling<br />
• What we need<br />
• Spectrometers<br />
• Polarize source<br />
• Tagging facility<br />
• Vacuum equipment, magnets,<br />
power supplies eTc<br />
• Scattering chamber, cryogenics<br />
And ……<br />
• A <strong>new</strong> <strong>Building</strong>!!
In <strong>the</strong> meantime:<br />
we do occupy <strong>the</strong> so called<br />
“Maquette” building<br />
(~<strong>10</strong>00 m 2 )<br />
We are about to complete in this<br />
building an upgraded <strong>10</strong> <strong>MeV</strong> <strong>injector</strong><br />
5
University Campus<br />
1,5 km away from <strong>the</strong><br />
center of A<strong>the</strong>ns<br />
NTUA<br />
Maquette <strong>Building</strong>
IASA’s Maquette <strong>Building</strong>
<strong>10</strong> <strong>MeV</strong> Linac Layout (Present Status)<br />
Section AA’<br />
T-line<br />
Basement
RTM Injector<br />
• Thermionic Electron Gun [ <strong>10</strong>0keV (β=v/c=0.56) ]<br />
• Chopper - Buncher System<br />
• Capture Section (β-graded) [ 1.3 <strong>MeV</strong> (β=0.95) ]<br />
• Pre-Accelerator (few <strong>MeV</strong>, β~1)<br />
• Booster (4 m long <strong>10</strong>.5 <strong>MeV</strong>)<br />
C1<br />
C2<br />
e -<br />
E-gun<br />
B
<strong>10</strong>0-keV (Chopper-Buncher) Line
Beam diagnostics - Wire Scanners<br />
x
Capture Section & Pre-Accelerator<br />
Preaccelerator :<br />
2.7m, to 5 <strong>MeV</strong><br />
Eff. shunt imped.<br />
82.5 MΩ/m<br />
Preacc.<br />
Capt.<br />
Capture :0.9m to 1.2<br />
<strong>MeV</strong>, tapered β
The 4m Booster<br />
1,4MV/m<br />
@<br />
<strong>10</strong>.5 <strong>MeV</strong>
Energy and RF related parameters<br />
for <strong>the</strong> <strong>10</strong> <strong>MeV</strong> Maquette project<br />
Capture<br />
Preaccel.<br />
Booster<br />
Length (m)<br />
0.9<br />
2.7<br />
4<br />
Gradient (MV/m)<br />
1.6<br />
1.4<br />
1.4<br />
Dissipated RF (kW)<br />
27.9<br />
64.1<br />
95.0<br />
Beam RF (kW)<br />
0.14<br />
0.38<br />
0.54<br />
Total RF (kW)<br />
28<br />
65<br />
96<br />
Energy (<strong>MeV</strong>)<br />
1.3<br />
5.5<br />
<strong>10</strong>.5
EPICS @ IASA
RTM Control System Architecture<br />
EPAC –98
High power<br />
RF @ IASA<br />
500 kW CW<br />
2380 MHz Wave guides
RF @ IASA:<br />
Crowbar tests<br />
Ηλεκτρονικά<br />
Υψηλής Τάσης<br />
<strong>10</strong>0kV<br />
Αποµονωτής<br />
Ηλεκτρονικά<br />
Χαµηλής Τάσης<br />
High-speed<br />
Main disconnect
High Voltage tests<br />
• Successful operation of <strong>the</strong> 20/11<br />
kV transformer, alarms & interlocks<br />
• Successful operation of <strong>the</strong> VVT<br />
• Successful operation of <strong>the</strong> AC/DC<br />
Rectifier 55kV DC
RF tuning (control of temperature)<br />
Water out<br />
Water Manifold<br />
LO<br />
DBM<br />
RF<br />
IF<br />
Phase Shifter<br />
Directional Coupler<br />
RF Drive<br />
Cavity<br />
Cavity<br />
Sample<br />
Power<br />
Divider<br />
Directional Coupler<br />
Thermistor<br />
Manual set<br />
point T 0<br />
Temperature<br />
Control Unit<br />
Water in
Triode Valve<br />
e.g. <strong>10</strong>0 kW RF & 50 gpm
X [mm]<br />
<strong>10</strong> <strong>MeV</strong> CW-Linac<br />
(Beam Profile)<br />
Parmela simulation<br />
Z [cm]
Beam Transport to <strong>the</strong><br />
“Experimental Area”<br />
•Beam Optics Calculations (ptrace /<br />
Omen and Transport codes)
Transport<br />
System<br />
1 m<br />
Experimental “Hall”<br />
Two 135 o<br />
dipoles<br />
Energy analysis system
Optics of <strong>the</strong> beam transport system<br />
<strong>10</strong> <strong>MeV</strong> Exit line
“Experimental<br />
Area”<br />
PNC<br />
RREPS
Possible experiments<br />
(<strong>the</strong> Maquette building)<br />
• Study of <strong>the</strong> Parity Non-Conserving<br />
Force between Nucleons through<br />
Deuteron Photodisintegration<br />
• Study of novel sources of Radiation<br />
from Relativistic Electrons in<br />
Periodic Structures (RREPS)<br />
PNC<br />
<strong>10</strong><br />
RREPS
Study of <strong>the</strong> Parity Non-Conserving Force between<br />
Nucleons through Deuteron Photodisintegration<br />
Experimental Goal<br />
Reduce <strong>the</strong> systematic errors to a better level than <strong>10</strong> -7<br />
for <strong>the</strong> neutron asymmetry Az in <strong>the</strong> reaction<br />
γ + d p + n E(γ) = 3 – 8 <strong>MeV</strong><br />
What is needed ?<br />
‣ A polarized photon beam<br />
‣ An improved n-detection n<br />
system<br />
‣ Beam quality and stability with quick feed back system
The Proposed Experiment<br />
Detector Set Up (schematically) for <strong>the</strong> d(γ,n)p reaction<br />
e<br />
Au<br />
Lead Shield<br />
Heavy Water<br />
LD 2<br />
Neutron & Photon<br />
Detectors<br />
Letter-of<br />
of-Intent<br />
JLAB<br />
LOI-00<br />
00-002002 for PAC 17<br />
Compton<br />
Detector<br />
Forward Photon Detector<br />
50 cm<br />
Photon Beam Dump
Radiation from Relativistic Electrons<br />
from Periodic Structures (RREPS)<br />
e - beam<br />
e.g. a Smith-Purcell<br />
experiment (layout),<br />
PXR or Channeling<br />
grating<br />
Detector<br />
Vacuum Chamber<br />
To beam dump
Future <strong>plans</strong> :<br />
• Commissioning of <strong>the</strong> <strong>10</strong> <strong>MeV</strong><br />
machine – <strong>10</strong> <strong>MeV</strong> beam tests<br />
• Full occupation of <strong>the</strong> experimental<br />
areas<br />
• Beginning of experiments (04)<br />
and in <strong>the</strong> meantime<br />
Full occupation of <strong>the</strong> <strong>new</strong> <strong>Building</strong> (05)
Research Program<br />
Pure recearch program is still an<br />
open issue *<br />
Applied research program has more<br />
shape<br />
Lets give some first ideas about it…
Applied Research Program<br />
• Advanced Medical Imaging techniques<br />
• Research on radiation <strong>the</strong>rapy<br />
• Photonuclear reactions for production of<br />
short-lived isotopes<br />
• Food Irradiation<br />
• Irradiation effects on Advanced Materials<br />
• Novel sources of Radiation from Relativistic<br />
electrons over periodic Structures (Smith-<br />
Purcell, PXR, Channeling etc) - RREPS
•Archeological preservation (icons)<br />
•Wastewater treatment<br />
•Air quality applications<br />
•Surface water and Marine environment<br />
Accelerator research and development<br />
•Free Electron Laser (FEL) applications<br />
•Polarize electron source<br />
•Tagging facility
e.g. Medical Imaging<br />
( 99m Τc-MDP)<br />
PSPMT Camera
The <strong>new</strong> building…<br />
New<br />
<strong>Building</strong><br />
IASA
The site of <strong>the</strong> New building<br />
(excavation already completed*)<br />
* End of June 03
IASA : The Cascade cw RTM’s<br />
(PHASE 3)<br />
EXP. AREA<br />
650 <strong>MeV</strong><br />
Basement<br />
RTM2<br />
(PHASE 2)<br />
INJ. LINE<br />
RTM1<br />
RTM1 (PHASE 1)
Summary<br />
• The <strong>10</strong> <strong>MeV</strong> <strong>injector</strong> almost completed<br />
• The <strong>new</strong> building started<br />
• Following <strong>10</strong> <strong>MeV</strong> beam tests : “experiments”<br />
• Expect energies up to 40 <strong>MeV</strong> (phase 1) and<br />
<strong>the</strong>n up to 240 <strong>MeV</strong> (phase 2)<br />
• Current typical <strong>10</strong>0 µA<br />
• Very good emmitances<br />
• ∆E/E less than <strong>10</strong> -4 (B & RF)<br />
• Start with two experimental halls<br />
• We will have a polarized electron source<br />
• Tagging facility<br />
• Possible upgrade to 650 <strong>MeV</strong> (phase 3)
IASA Team<br />
• Dimitris Baltadoros<br />
• Samuel Cohen<br />
• Dimitris Economou<br />
• Tasos Filippas<br />
• Tassos Garetsos<br />
• Evangelos Gazis<br />
• Athanasios Geranios<br />
• Nikos Giokaris<br />
• Giannis Grammenos<br />
• Andreas Karabarbounis<br />
• Christos Ktorides<br />
• Frantzeskos Maravelias<br />
• Kaliopi Marini<br />
• Nikos Papadakis<br />
• Costas N Papanicolas<br />
• Vicky Phinou<br />
• Paris Sphicas<br />
• Stathis Stiliaris<br />
• Sotiris Sotiropoulos<br />
• Nikos Uzunoglou<br />
www.iasa.gr
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