PS/DR/Note 2002-060 (Min.)
Summary of the Meeting of the PS Management Board
held on 22.04.2002
Present : S. Baird, J. Boillot, R. Cappi, M. Chanel, G. Daems, J.P. Delahaye (Chairman), B. Frammery, R. Garoby, G. Geschonke, J. Gruber, H. Haseroth, T. Kehrer (Secretary), M. Lindroos, S. Maury, K. Metzmacher, J.P. Potier, K. Schindl
Excused : B.W. Allardyce, D. Boimond (Staff Association), S.L. Neboux, J.P. Riunaud
* * * * *
1. Follow-up of previous meeting and matters
- Previous Meeting : No items to be followed-up of the previous meeting.
Student Committee : the Selection Committee will take place
23 April 2002. 5 candidates are requested by the Division (remaining quota
for 2002 : 9.5 m/m) for :
- Ions for LHC (ECR ion sources), doctoral student
- ISOLDE/HRS (Buncher and cooler in HRS line), doctoral student
- LHC (Location of obstacles in the vacuum chamber by RF methods)
- Ions for LHC (beam dynamics simulation)
- SPL (radioprotection issues of the planned 4MW target)
: J. Boillot announced that the application forms for the May Scientific
Associates Committee are now available in S. Neboux's office. Requests should
reach J. Boillot by Thursday, 2 May 2002. However the Sector's 2002-quota
is very low in particular for Non-member States Associates.
- R. Garoby announced a SPL Mini-Workshop (CERN, PS Auditorium, 25-26.4)
in collaboration with CEA/IN2P3, with the goal to set up a scenario and
a tentative schedule for a common low energy test stand with source, RFQ
and chopper line. R. Garoby will present a summary of the Workshop in the
next PSMB meeting.
- Restructuring of Controls : within the framework of the SLTC (SL
Technical Committee, scientific secretary : H. Schmickler, 1 meeting per
month) a series of presentations will be organized on the future controls
strategy, where apart from the 2 CO Groups also controls experts from other
Groups will be invited. B. Frammery expressed his concerns about the relevance
of these meetings. He pointed out that the 4 Members of the Inter-Divisional
Working Group (P. Charrue, B. Frammery, R. Lauckner, C.H. Sicard) are in
favour of the PS approach which is based on largely standardized software
with reduced control's expertise in the equipment groups.
- CTF3 Collaboration Meeting : G. Geschonke informed the PSMB that
after EPAC2002, a CTF3 Collaboration meeting will be organized (12 and 13
June 2002) with experts from SLAC, LAL & Frascati. The sessions will
- GLIMOS ISOLDE : G. Daems announced that both the ISOLDE TSO (Territorial
Safety Officer) and GLIMOS (Group Leader in Matter of Safety) will leave
this year. Two new TSO's have been appointed (R. Catherall and U. Georg)
and it was decided that the function of GLIMOS for ISOLDE will not be renewed.
This will also be the case for CTF2 at the end of the year. Only LIS will
still require a GLIMOS because of the high-power laser.
- MAPS : Career Review Reports : M. Fontanet will send an example
of such a report for a change of salary band to J. Boillot who will forward
it to the Group Leaders. J. Boillot recalls the deadline of 2 May 2002 and
suggest the Group Leaders to contact M. Fontanet in case of doubts.
- Linac and PSB operate well.
- The PS Briefing will take place Wednesday 25 April 2002 at 14:00 in the
- The start-up of the PS is brought forward to Friday 26 April 2002 in order
to test the B-train.
- Indium Ion tests will take place on 23 and 25 April 2002 in the
PSB (sublimation to improve the vacuum has started).
- "Orphan" equipment : who is responsible for the internal
dump targets ? It appears that no responsible has been appointed after the
departure of M. Zanolli and later G. Martini. The general problem of "orphan"
equipment was raised and J.P. Delahaye wants to clarify the situation. A
list of "orphan" equipment for which no group feels in charge
should be prepared (Action : S. Baird) and a proposal for the responsibility
for the internal dumps will be prepared (Action : J.P. Potier, J.P. Riunaud).
- ISOLDE GPS Scanner : a slit was damaged on the GPS scanner which
is now unusable. At very short notice S. Burger and C. Bal manufactured
a new slit which will be installed Tuesday 23 April 2002 without any impact
on the ISOLDE schedule.
- S. Baird recalled that ST interventions will take place Tuesday 23 April
2002 on the cooling tower of the PSB water cooling system. During the repair
the power will be reduced, thus the Ion tests can take place as foreseen
but with fewer cycles.
- B. Frammery : Power supplies on the PS slow extraction (QSE for instance)
were reported to have tripped off when the G64 crate of this supplies was
switched on. This problem is well known for supplies driven by GFAS and
cannot be easily overcome from the controls side: the DACs located in the
G64 crates provide at start up a reference corresponding to the maximum
negative current of the supply. If the power stage of the supplies is already
ON at that the time, the supply is likely to trip off. The best precaution
is to send a valid control value (CCV) prior to switching on the power stage
of the supply.
3. Report on the SPS days (S. Baird)
This point is postponed to next week's meeting.
- R. Cappi summarized ICFA-HB2002
(20th ICFA Advanced Beam Dynamics Workshop on High Intensity & High
Brightness Hadron Beams) which took place at Fermilab, 8-12 April 2002 and
was co-sponsored by Fermilab and KEK. Participants from PS were R. Cappi,
C. Carli and R. Garoby. In total 150 persons attended the Workshop (130
- A new "Proton Driver" is actually under study at Fermilab
featuring a 600 MeV LINAC (present 400 MeV) and a new 8 GeV Booster
synchrotron with the aim to reach 1,5 1014 protons per main
- Another interesting project is the upgrade of the AGS :
- Phase I : LINAC 400 MeV (present 200 MeV), Booster 2.5 GeV (present
1.9 GeV) + accumulator ring.
- Phase II : SPL at 1.2 GeV yielding 1 MW beam power with the AGS,
and increased AGS pulse rate of 2.5 Hz (yielding 2 MW) or even 5
Hz (4 MW).
- R.Garoby adds that, as an option in the proton driver study taking
place at FermiLab, an 8 GeV superconducting linac is being considered
Based on the SNS design for its low energy part, it uses TESLA-like
accelerating cavities above 1 GeV. Costing is being done, and it is
likely to be more expensive than the synchrotron option, although simply
scaling the TESLA estimates promises a very competitive price...
- Electron Cloud Workshop
held on 15-17 April 2002 at CERN. An experiment set-up by F. Caspers of
a ring resonator has reached multipactor level in a vacuum chamber andwas
presented at the e-cloud workshop, and will soon be linked to the web
site. This will be a very useful tool in the study of the e-cloud phenomena
and its potential cures.
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tk 24 April 2002