From: Flemming Videbaek (videbaek@rcf.rhic.bnl.gov)
Date: Mon Oct 13 2003 - 14:29:01 EDT
Hi everybody,
The various message that has come from RHIC are essential consistent. The PAC recommendations was
a) Au-Au at the highest energy (200) up tp 14 weeks or when Phenix has had delivered 300 invrse microbarn, whatever comes
first.
b) development time 5 weeks for polarized protons (no exp running)
c) Should there be weeks left over either due to good performance from RHIC, or from improved budgets those additional
weeks
could be for either pp running or lower nergy Au run (63 GeV), to be determined later.
At present the DOE and the lab is funded by continuing resolution, and until budgets are approved by Congress this is not
final.
the present best time scale call for
dec 1 both beams cold
dec 14 colliding beam - acc improvement period i.e. machine commisioning at days+eve and detector comm at night
(weekends?)
Jan 3 START of physics run.
Thus the numbers 14+ 2 weeks for setup is a reasonable assumptions for shifts. The 336 shift is thus the bare minimum; my
experience is that due to changing guard several shifts per week still needs two people say 2-3, impliing the total number
is 376.
I have received some of the previous requested information on coverage, and will like to second the call for
information if not yet supplied. Another way of thinking about the numbers is that for an average running week about 4-5
outside
collaborators need to be present at BNL
| Hi Flemming
|
| I need a bit of decoding for this message from RHIC.
|
| I assume that it means:
| - that the 27 weeks scenario has been decided already.
| - that 5+14 of Au+Au means 14 weeks, in the best case of top energy running.
| -.that 5 weeks of development for polarized running means no experiment for
| us (?).
|
| Thus I would conclude from this that BRAHMS has to man 14 weeks + some
| detector setup time, say 16 weeks, amounting to about 336 shifts. Please
| correct my understanding as necessary.
|
| Could you indicate when you believe regular beam operations will start?
|
| BRAHMS collaborators (or group leaders) should then start submitting (to FV)
| concrete estimates of the shifts that they expect to be able to cover,
| together with indications of the preferred period to visit BNL.
|
| cheers
| JJ
|
|
|
|
|
| ____________________________________________________________
| Jens Jørgen Gaardhøje, Assoc. Prof., Dr. Sc.
| Niels Bohr Institute, Blegdamsvej 17, 2100 Copenhagen, Denmark.
| Tlf: (+45) 35 32 53 09, secr. (+45) 35 32 52 09, Fax: (+45) 35 32 50 16.
| UNESCO Natl. Comm., secr. (+45) 33 92 52 16.
| Email: gardhoje@nbi.dk.
| ____________________________________________________________
|
|
| ----- Original Message -----
| From: "Flemming Videbaek" <videbaek@rcf.rhic.bnl.gov>
| To: <brahms-l@bnl.gov>
| Sent: Saturday, October 11, 2003 2:33 AM
| Subject: Fw: Updates from the Scheduling Physicst/Messenger ... first Time
| meeting Oct. 21
|
|
| > FYI
| > I believe this is consistent with other recent messages from me.
| >
| > Flemming
| >
| > ------------------------------------------------------
| > Flemming Videbaek
| > Physics Department
| > Brookhaven National Laboratory
| >
| > tlf: 631-344-4106
| > fax 631-344-1334
| > e-mail: videbaek@bnl.gov
| >
| > ----- Original Message -----
| > From: "Kin Yip" <kinyip@bnl.gov>
| > To: <undisclosed-recipients:>
| > Sent: Friday, October 10, 2003 2:31 PM
| > Subject: Updates from the Scheduling Physicst/Messenger ... first Time
| meeting Oct. 21
| >
| >
| > | Hello,
| > |
| > | ===============
| > |
| > | I was told that the C3 inflector/C5 magnet along with the
| Tandem-to-Booster
| > | and Linac-to-Booster lines have been installed, aligned and surveyed.
| > | Everything
| > | seems to be "on schedule" if not slightly earlier and there has been no
| > | major
| > | problem so far.
| > |
| > | The beampipe is being pumped down ... and baking may start later this
| > | evening
| > | and may finish by next Tue./Wed.
| > |
| > | One caveate as commented from L. Ahrens earlier ... since we broke apart
| the
| > | system (around C3/C5) and found some dislocated pins, now though we have
| > | hopefully put them back into places, things could be different from
| > | before ...
| > |
| > | ===================
| > |
| > | This year's (FY2004) 27 week run scenario for the 4 RHIC expts. (no
| pp2pp)
| > | has been approved (by Tom Kirk) as follows :
| > |
| > | 5 +14 weeks of 200 GeV Au+Au
| > | 5 week development run for polarized protons
| > |
| > | This in principle is pending on the approval of the FY04 President's
| > | budget by the Congress
| > | as we are now in the "Continuing Budget" stage (hopefully not for too
| > | long).
| > |
| > | I understand that if 300 inverse-microbarn can be reached earlier enough
| > | and more funding is
| > | available, Au-Au run at 63 GeV and more proton polarization may be
| > | possible.
| > |
| > | ====================
| > |
| > | Last but not the least, the first Time meeting will be on Oct. 21 at
| > | 1:30 pm (Synder Hall)
| > | --- traditional time and place --- just about when NSRL begins to
| > | prepare to run.
| > |
| > |
| > |
| > | Scheduling physicist,
| > |
| > | Kin
| > |
| > |
| >
| >
|
|
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