Work at the
low energy stage of REX-ISOLDE
Shutdown - year 2005-2006
Action Time Responsible Date
Vacuum group
Improve vacuum RFQ QP (air
pocket) 1 week technician before
15/3
Recovery balloons for roughing pumps at REXTRAP
?? Vac. group before
15/3
Implement vacuum control into general CS
?? AB/CO and D. Porret before 15/3
Turbo pump revision for trap, BTS, EBIS, Sep and Linac
3 days Vac group + technican before 1/3
Roughing
pump revision, REXTRAP and EBIS
1/2 day S.
Meunier before 1/3
Roughing
pump revision , LINAC
˝
day S. Meunier before 15/3
Bakeout
zeolithe trap ˝
day Vac group before 1/3
Connect readout of fast shutting valve at the REXEBIS
to the Simatics system 1 day D.
Porret before 1/3
Bakeout the EBIS 1
week S. Blanchard before 15/3
Leak
test EBIS and mass separator 1 day S. Meunier 1/3
Find air leak in REX(EBIS) system 2
days S. Meunier + Fredrik before 15/3
Order
spare parts Vac.
group
Vacuum
improvement Linac 3
days D. Porret before 1/3
Name tags for gauges in sec 5
Exchange valve in 0-deg beam line
Connect V6 to Simatics
Display not working for 9-gap cavity
pump in sec 5
Switch from Pirani to Penning on
full range gauge (interlocks)
Connect valve at 2nd beam line to
Simatics
Optional work
Simplified and changed roughing vacuum system for the EBIS shutdown 2006
Exchange remaining copper for silver seals at EBIS
3
days technician
wait
Fast
ignition for EBIS IKR gauges S.
Meunier low prio
LINAC Install
a window on BO box 5 for the stripper foils
2 days workshop + Didier shutdown 2005
REXEBIS Spare insulators to collector and HV
break
1
day Fredrik shutdown 2006
REXTRAP Repair the jittering spare memory
module shutdown
2006
REXTRAP Check resistance of all internal
elements in the trap before
1/3
REXEBIS Check resistance of all internal
elements in the EBIS before
1/3
REXEBIS
Reduce pressurized air to EBS.BO10
˝ day AB/BDI + Fredrik before
1/3
REXEBIS Feedthrough flange for the extractor
voltages (leak currents on Ext 1 and II)
1 day intervention, 4 days work operator + Fredrik before 1/12
Cable
tray at the REXTRAP electronics rack
1 day B. Crepieux autumn 2005
Adjust
zero setting for LHe for EBIS 2
h R. Scrivens 1/12
Cleaning
action 1 day technician 15/3
HV tube
EBIS and TRAP cage
Pump
on LHe transfer line for REXTRAP 1 day technician 1/3
REXTRAP Movement of inj. and ext. plate out and in not reliable
˝
day technician 1/2
Improve insulation (60 kV)
for trap ion source
2 days technician 1/2
Design support, manufacture
and install telescope for the EBIS 1/2
1 week techn + Erwin/align. group
Exchange old
cooling tubes for EBIS 1 day technician 1/3
Clean flow
meters for water cooling at EBIS 1/3
˝
day technician
Cool
down EBIS for April run 1
week technician
+ Fredrik 15/3
Startup
EBIS for April run 1
week operator
+ Fredrik 1/4
REXEBIS Control and silent the grounding relay
˝ day technician 1/4
REXEBIS Manufacture
a post anode gun
1
week ISOLDE workshop 1/11
REXTRAP LN2
filling of REXTRAP over Christmas
Once
a week Christmas
REXEBIS
Check water circulation /
temperature in cooling mantle
˝ day Fredrik 1/12
REXTRAP Remove lead shielding around trap roughing pumps
˝
day technician 1/12
(If
necessary, reduce return pressure of cooling water from 3 bar to <2 bar.
Make sure turbos, bore and collector get sufficient amount of water cooling.)
Optional work
REXTRAP Implement stronger E-field in the RF
excitation shutdown
2006
REXTRAP Implement magnetron and cyclotron
excitation shutdown
2006
REX Design a bender system for the REX
separator
2 weeks draftsman
+ Fredrik
REX Manufacture a bender system for the REX
separator
3 weeks workshop
REX Install a bender system for REX separator
1 week technician
+ operator
Completely new (and reliable) interlock system for
baking, pumps, HV and cathode heating
4 weeks technician low
prio.
Test
current integrator box for pulsed beams
1 day Fredrik + operator low
prio.
Improve
shielding of REXTRAP roughing pumps in case of no balloons 2
days technician + TIS before
1/4
REXEBIS Spare isolator for the collector
1
day Fredrik shutdown 2006
REXEBIS Exchange the
faraday cage for the collector wait
Test
Si detectecor and PM tube after mass separator
1
week ISOLDE physics group+
Fredrik shutdown 2006
Construction, installation and test of power control
for the cathode heater wait
1
week M.
O’neil and Fredrik
REXTRAP N2 gauge for solenoid not working wait
Remount
suppressor and collector according to design position, i.e. 5 to 8 mm closer to
the drift tube structure 2 weeks Operator + Fredrik Wait
AB/PO
REXEBIS cables for gun heating and post anode
1
day N. David 1/12
All A number of BNC cables are poorly done.
BTS.FC150 cable, trigger cables, cables at EBIS control table. ˝ day No
problems, I can do that 1/3
REXEBIS Test HT ramping time with 30 kV TREK
supply.
1
day N. David 1/3
REXTRAP check synchronisation of the TREK and
German power supplies for the tubes.
˝
day N. David and Fredrik 1/3
SEP-LINAC Install of new crates for Heinzinger
power supplies.
2
weeks N. David before
1/11
SEP-LINAC Finish Heinzinger power supplies
adaptation for new crate/control system.
1
week N.
David before
1/11
SEP-LINAC Install & hardware test of new beam
optic control system.
1
week N.
David before
1/12
LINAC Normalization of power cables
sections for Danfysik 858 (safety reasons).
4
weeks N. David 1/2
LINAC Electric connections improvements
on Danfysik 858.
4
weeks N. David before
1/2
Check
power supplies cooling system (fan replacement, remove dust, water leak…)
1
weeks N. David before
1/3
Design new 8 channels +/-500V
amplifier (REXTRAP+REXEBIS)
N.
David before
1/3
Update or write missed documentation
(test procedure, power converter operation note…)
N.
David before
1/3
Improve security on target power switcher box
N.
David before
1/3
Hardware test with vacuum interlock
N.
David before
1/3
Motor
generator revision 3 days C. Mastrostefano 2006
Arrange
adaptation cable for FUG 60 kV exchange to TREK supply
1
day N. David before 1/3
Optional work
BTS lower kicker supplies do not go to 0 V
when set to zero level low
prio
All Separation office and
technical network followed
by S. Catin
REXTRAP Repair Quantum Composer followed by Fredrik sent away
All Java application programmes for beam
optics
?? Appl. programmers 1/3
LINAC implement
beam optics java applications N.
Trofimov 1/3
REX Stopping console computers in control room
1
day S. Catin 1/2
Implement
slow extraction out of the EBIS
?? Sven and co 1/3
Save
settings for the EBIS ?? Sven
and co 1/3
Implement
pretrigger pulse from EBIS to Linac in EBIS CS
Sven
and co 1/3
REXTRAP Remove the VME from the rack
˝
day Romain Done
REXTRAP Buy spare cards GPIB, Profibus and NI
together with ISOLTRAP
˝
day Romain 1/12
REXTRAP Remains to be done 1/10 2005
* Integrate
the SR430 MCA for EBIS
* Write
documentation. (+make
* Integrate
the
* Exchange
the current DS345 Frequency Generator by one equiped with GPIB interface and
integrate in the Scan-GUI. (Fast).
* If
possible, add a "security" check during the creation of the Scan-GUI
object: if already created on an other pc, warn the user.
* Fit
possibility on the scan graph (frequency resonance for example)?
* Buy GPIB
Cables longer than the ones we have?
* Plug the
PicoAmp2 and be sure that the connection is OK.
* Remove the
VME from the rack.
Optional work
Write
an ion count programme
NAOS
implementation ?? AB/CO + N. David
Implement
general AB timing ?? AB/CO
RF section
Pull
a pretrigger cable from EBIS to RF room ˝
day ?? 1/2
Repair
and move tuners at RFQ and IH cavities RF
section 1/3
BDI
LINAC Repair faulty FC
˝ day Gerrit Jan 1/12
Mass
sep Repair cable for RFQ.FC20
˝ day Gerrit Jan 1/12
Mass
separator BTS.FC150, cable short cut
˝
day Gerrit Jan 1/12
Produce
spare parts of all kinds
˝ investigation 1 week work AB/BDI
+ Fredrik + Didier 1/4
Exchange
the RFQ.BO30 MCP ˝ day AB/BDI + Fredrik 1/2
Strange
behaviour of actuator for EBS.BO10, injection/extraction/injection.
1 day? AB/BDI 1/2
Reduce
the air flow for EBS.BO10 ˝ day AB/BDI + Fredrik 1/2
Increase
the air flow for BTS.BO30 1 hour AB/BDI + Fredrik 1/2
REXEBIS Build a FC for EBS.BO10, direction
EBIS
1
week AB/BDI + Fredrik 1/3
Optional
work
Arrange BD rack 2
days AB/BDI
Arrange
vacuum interlock to the HT supplies for the MCPs.
1 week AB/BDI +
D. Porret
More
power outlet in the BD rack
˝ day AB/BDI
Connect
electronics (tube HV, CFD, amplifier, scaler etc) to the newly installed
scintillator and PM tube. 1-2
days ISOLDE
physics group
Alignment
REXEBIS Fixed alignment mark on the wall
Align.
Group + Erwin 2
days 1/2
REXEBIS Install fixed telescope at the EBIS instead of teodolithe.
Align.
Group + technican + Erwin 1
week 1/2
REXEBIS Alignment of gun at the time of insertion
Operator + Fredrik ˝ day 1/3
Collect
the old alignment documentation form Chollet / Sven de Man / Elias Villar Gomez
/ Fredrik
Align. Group + Erwin 1 day 1/2
Update the plan and complete the REX
alignment with documentation
Align.
Group + Erwin 1
week 1/2
Write notes on the walls next to the
fix point crosses to explain their alignment purpose
Align.
Group + Erwin 2
days 1/2
Optional work
Realign
the beam transfer line. Optically or with ion beam?
Align. Group + Erwin + technician + Fredrik 1 week low
prio
Documentation
and spare parts
Follow EDMS implementation of REX by Elias Villar Gomez
Fredrik
Get all drawings of EBIS from L. Liljeby
Eternity Elias Villar Gomez
Check O. Kester’s mass separator simulation files and drawings
1
day Fredrik shutdown
2006
Collect material 1
day Fredrik + Didier shutdown 2006
Hall in general
Electron beam testbench
stand
Move RF source cage to build
275
Sort
out spare parts: 1 day Fredrik + Didier shutdown 2006
In the ISOLDE hall
RF room
Green toolbox linac
ISOLTRAP light building
Update REX-poster 1
week Fredrik shutdown
2006
Collect catalogues from old REX office Wait
Deliverables to EURONS / EURISOL
Closed shell breeding (2006)
Continuous injection (2006)
Di-electronic recombination (DR) (if
possible)
New gun design by Feb 2006
Slow extraction (2006)
Shell closure with varying energy
(later stage, 2007)
Tests and developments
REXEBIS optimise
ion injection at higher ebeams currents
1
week Fredrik 1/12
TRAP and EBIS Vary
the tperiod and check efficiency for the trap and EBIS systematically.
2
days Romain and Fredrik
Closed shell breeding of K (Eionisaion for K17+ to
K18+ is 4423 eV)
1
day Romain and Fredrik 1/12
REXTRAP Vary
Urf in trap for Li and K
1
day Romain and Fredrik 1/12
REXEBIS Continuous injection (pick-up
transversal motion at the point of reflection)
3
days Operator +Fredrik 1/12
REXEBIS test magnetic steerers at the
collector (typically 20 turns * 5 A)
2
days Fredrik 1/12
REXEBIS H or He cooling for Li/Na/K/Cs inj.,
vary tbreed (long times),
vary pressure, check different charge states
2
days Romain + Fredrik 1/12
REXEBIS Li injection, check-up power supply timings.
1
day Romain and Fredrik 1/12
BTS
Find
optimal 30 and 60 kV settings through BTS. Take pictures etc.
2 days Operator + Fredrik 1/4
REXEBIS Ion injection after shutdown (after
EBIS reassembling)
2
days Operator + Fredrik 1/4
REXTRAP + REXEBIS, breeding test of heavy masses (Pb or similar)
Tests of long breeding times together with long trapping cycle.
3
days Operator +Fredrik 15/4
Test Li/Cs production in REXTRAP ion source
Already
tested LiCl on zeolithe with Re wires instead of tungsten
Try LiCl on Ta foil
1
week Fredrik + operator shutdown 2006
REXTRAP further mass
resolving power tests with some isobar rich beam "cocktail" beam
1
week Pierre + Fredrik shutdown 2006
Test post anode cathode 1 month Fredrik
+ Klaus Allinger shutdown
2006
Test
radioactive beam detection system for low intensities at the electrical bender
after the EBIS. Connect electronics to the newly installed scintillator and PM
tube
1
week ISOLDE physics group +
Fredrik shutdown 2006
Long term project (not shutdown 2006)
Molecular
beam tests trapping and charge
breeding with new molecular beams (AlF,...)
1
week Operator + Fredrik
REXEBIS Injection into partially compensated
ebeam
3
days Operator + Fredrik
Simulate
residual gas transport through RFQ
1 week T. Aronsson
Trap ion source
Connect mass marker to oven
(decouple mass marker evaporation from ionisation region)
Pierre’s
ISOLTRAP ion source (incl RF spectrometer)
REXTRAP
further possible improvements:
-
recalculate injection scheme
-
eventually moving the entrance diaphragm further in
-
introducing an adjustable exit diaphragm
-
calibrate the cyclotron frequency for low intensity Na or K beam.
REXEBIS Build up a test-bench
Investigate needed
cathode heating power and lifetime
Measure Iextracted vs
Tcathode
(see separate document at
next page).
REXTRAP He,Ne,Kr,Ar,Xe
trapping. Cooling tests with He as a buffer gas. Ions lifetime measurement.
Check up of the impurities inside the trap.
REXTRAP He cooling, breeding. Overcoming the
charge exchange problem inside the trap. Testing other cooling method or H2
cooling.
REXTRAP Test rotating wall cooling
and injection into EBIS with very high current beams
2 weeks Operator
+ Fredrik
REXEBIS Test if EBIS
injection efficiency for 30 and 60 keV is similar
3 days Operator +
Fredrik
Schedule
*
Providing beam for WITCH experiment during shut-down?
*
Startup EBIS 1st of April. REXTRAP already running.
*
Beam tests April. Test beams to be decided.
Ideas for BMBF application from
1.
2-4 new turbo pumps for trap. 30 kCHF
Either
as replacement for old ones (maintenance) or to be used with He gas
cooling (development)
2.
Higher and improved electrical field at the trapping electrodes in the trap. 10
kCHF. Development.
3.
Improved local trap ion source with mass markers. 5 kCHF. Development.
4. Pos
doc for two years. Manpower.
5.
Modified injection and extraction diaphragms in the trap, i.e. a new internal
structure. 15 kCHF. Development.
6.
New high performing electron gun for the EBIS. 3 kCHF. Development.
7.
New high performing electron beam for the EBIS (new gun, drift tube structure,
collector). 15 kCHF. Development.
8.
Bender box after the REX separator to do beam composition measurements,
efficiency optimisation and beam implantation. 10 kCHF. Development.
9.
Adapt the inner structure to He cooling, i.e. improve the differential pumping.
Could be combined with point 5.
10.
Maintenance and spare parts (power supplies, beam diagnostics, control system).
20 kCHF. Maintenance
11.
Make the TwinEBIS operational for electron beam tests. 20 kCHF. Development.