David Rodríguez Piñeiro Mainz University OLYMPUS Collaboration Meeting DESY 23. 02. 2010
MAC Review Meeting May 2008 DESY
description
Transcript of MAC Review Meeting May 2008 DESY
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