Hi Djamel and Flemming, The values for magnets Djamel got from brag agree with the values I used doing a fs geometry tuning. They were retrieved also from brag. What Djamel sees is a disagreement between D4(and only D4) x, y, and z position when comparing the brag and db values, so my suspicious is that there is something wrong with D4 in the db. Concerning the magnet gaps: D3 and D4 x gaps for db and brags don't match (as Djamel pointed). Pawel Flemming Videbaek wrote: > Hi Djamel, > > I strongly trust the magnets in Brag are correct unless someone else has > modified default settings > I have a meeting at 11-12.30 and can take a further look later. > > Flemming > > ------------------------------------------------------ > Flemming Videbaek > Physics Department > Brookhaven National Laboratory > > tlf: 631-344-4106 > fax 631-344-1334 > e-mail: videbaek@bnl.gov > ----- Original Message ----- > From: "Djamel Ouerdane" <ouerdane@nbi.dk> > To: "brahms-dev-l" <brahms-dev-l@bnl.gov> > Sent: Tuesday, June 11, 2002 9:55 AM > Subject: Magnet gaps in brag > > > Hi, > > > > I've just checked out brag (after the latest magnet gap update) and > > checked some positions in the BFS. The gap length along the X direction > > doesn't match for D3 and D4 : > > > > D3 D4 > > SQL DB : 38 40 > > BRAG : 40.005 44.625 > > > > D5 looks fine. > > > > The positions of the DCs and magnets are all wrong ( from 1 cm to 4 cm > > offsets in X in some cases), (the angles too but it's an easy correction). > > I can spend a lot of time tuning the parameters "refdist" and > > "clearance" for each of the detectors unless someone tells me how to > > related these quantities to the positions given in the geo output > > (global). That's urgent. > > > > Thanks. > > > > Djam > > > > > > -- > > Djamel Ouerdane ------------------------------------------o > > | Niels Bohr Institute | Home: | > > | Blegdamsvej 17, DK-2100 Ø | Jagtvej 141 2D, | > > | Fax: +45 35 32 50 16 | DK-2200 Copenhagen N | > > | Tel: +45 35 32 52 69 | +45 35 86 19 74 | > > | http://www.nbi.dk/~ouerdane | > > | ouerdane@nbi.dk | > > o---------------------------------------------------------o > > -- ---------------------------------------------------------------------- | Pawel Staszel | | Niels Bohr Institute Tb 8 email: staszel@nbi.dk | | Blegdamsvej 17 phone: (+45) 35 32 53 51 | | København Ø FAX: (+45) 35 32 50 16 | | Danmark | ----------------------------------------------------------------------
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