mac review meeting may 2008 desy
DESCRIPTION
MAC Review Meeting May 2008 DESY. Decouple Desy3 Vacuum System New Beamline Vacuum Chambers Replace Kicker Pulsers, Relocate Controls Connect New Cooling Water Facility Install/Test New Power Supplies and Regulation. Shutdown Activities. Tunnel overview. Desy 2. Desy 3. - PowerPoint PPT PresentationTRANSCRIPT
The Synchrotron (DESY-II)John Maidment MDE
MAC Review Meeting
May 2008
DESY
• Decouple Desy3 Vacuum System
• New Beamline Vacuum Chambers
• Replace Kicker Pulsers, Relocate Controls
• Connect New Cooling Water Facility
• Install/Test New Power Supplies and Regulation
Shutdown Activities
Tunnel overview
Desy 2
Desy 3
In and Ejection
To Petra
FromPia
Test beam region
Photons FromInternal Target
Converters
Spectrometer
In and Ejection May 08
To Petra(E-Weg)
BPM in ejection line
Test beam region May 08
Test beam outlet to Hall 2 May 08
ShutterCollimator
• Replace Kicker Pulsers, Relocate Controls
• Connect New Cooling Water Facility
• Install/Test New Power Supplies and Regulation
Shutdown Activities
Kicker Locations
Nebenbunch-kicker
Ki 20
R1
R2
R3
R4
R5
R6
R7
R8
SER
Injektionskicker
Ki 2+ Ki 2-
Dumpkicker
Ki 16
Vertikaler Anregungs-kicker
Ki 12V
Ejektionskicker DORIS
Ki 24R
Horizontaler Anregungs-kicker
Ki 36H
Ejektionskicker PETRA
Ki 40E
e+
e-
e- / e+PIA / Linac II
PETRA III
DORIS
G1 G2 G
3 G4 G
5 G6 G
7 G8
G9
Injektionsspetum
SEPT +/-
Ejektionsseptum PETRA
Sept 42E
Ejektionssepta DORIS
Sept 26AR Sept 26BR
VBB 46 E/R
VBB 44
E/R
HBB R
HBB R HBB R
HBB R
HBB E
HBB E
HB
B E
Typical pulser unit May 08
• Six units (for the 5 circuits) have been ordered plus 2 general purpose spares
• Dipole retains white circuit• New chokes for quad resonance circuits have been ordered
• Manufacturing schedule has slipped, so:• One unit (sextupole) is here and has been connected• Tunnel has been closed to allow technical tests (albeit at low load
current)
• Three regulation loops, current, voltage, field• Biased cosine set point tables for both I and V• How will the DSP management perform, questions of synchronous
data acquisition etc
New Power Supplies
• Desy-II is just a work horse, can accelerate a single bunch with up to 1.3*1010 particles
• Programmable hardware exists ( “Zyklusgenerator”, LTG) • Top-up to Petra has been demonstrated• Injection to Doris using a 6GeV magnet cycle has been
demonstrated
• The existing linac gun allowed positron accumulation of 50 mA in 48 Petra-II bunches in < 3 minutes at 3 Hz
• Doris was refilled using 3*109 positrons per bunch at 6 Hz in under 1 minute
Future Operation in “Top-up” Mode