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Offline Energy Calculation (Dec 2000)
The list below is for each stack/resonance in chronological order;
the resonance name is followed by the start date of the data taking and the
"nominal" energy from the logbook.
The avalable links give a table of the calculated energy, the luminosity
(from the web) and the energy weighted with the luminosity
run per run for that particular "nominal" point. It is also available a
plot of the energy, the sigma of the beam and the dL versus time.
Two algorithms have been used for the calculation (see S.Werkema's
PB638)
For orbits with big values of dP/P (> 5 10-4), the calculation
using Quad Steering ON results inaccurate. In these cases, to deal with
lattice change, new reference orbits have been used; their orbit
length has been determined using the psi' of stack 29 reference orbit and
Quad Steering ON.
The reference orbits used for the calculation are:
Look at the column description of the
info table
for an explanation on the errors on the energy calculation.
The luminosity for each stack file is the final one.
Last update of this page (and links) --
Fri Dec 15 14:22:56 CST 2000
Stack 01 -
psip of 00_01_27 : nominal energy 3687.6 3687.4 3687.2 3686.9 3686.5 3686.0 3685.7 3685.5 3685.2 MeV
Data ;
Plot
Stack 02 -
psip of 00_01_31 : nominal energy 3686.0 MeV
Data ;
Plot
Stack 03 -
chi2 of 00_02_03 : nominal energy 3557.9 3557.2 3555.7 3554.2 3535.0 MeV
Data ;
Plot
Stack 04 -
chi1 of 00_02_06 : nominal energy 3511.7 3511.3 3510.9 3510.5 3510.0 3509.6 MeV
Data ;
Plot
Stack 05 -
psip of 00_03_15 : nominal energy 3688.5 3686.6 3686.1 3685.5 MeV
Note that the beam shape during run 5258 had 2 peaks and most
of the beam was not on the central orbit: the energy and sigma
beam are not representative of the beam distribution.
Data ;
Plot
Stack 06 -
psip of 00_04_05 : nominal energy 3686.0 MeV
Note that the beam shape during run 5431 and 5432 had 2 peaks
and most of the beam was not on the central orbit: the energy
and sigma beam are not representative of the beam distribution.
Data ;
Plot
Stack 07 -
chi0 of 00_04_07 : nominal energy 3418.0 MeV
Note that at the end of stack 5442 the MCR notified problems with the
momentum colling system. The situation recovered shortly after
run 5443.
Data ;
Plot
Stack 08 -
chi0 of 00_04_09 : nominal energy 3470.0 MeV
Data ;
Plot
Stack 09 -
chi0 of 00_04_12 : nominal energy 3415.0 MeV
Data ;
Plot
Stack 10 -
chi0 of 00_04_15 : nominal energy 3385.0 MeV
Data ;
Plot
Stack 11 -
chi0 of 00_04_17 : nominal energy 3426.0 MeV
Data ;
Plot
Stack 12 -
chi0 of 00_04_19 : nominal energy 3411.0 3405.0 MeV
Note that BPM A6Q10 had glitches in the readback. This was taken into account.
Data ;
Plot
Stack 13 -
chi0 of 00_04_22 : nominal energy 3416.0 MeV
Note that BPM A6Q10 had glitches in the readback. This was taken into account.
Data ;
Plot
Stack 14 -
psip of 00_04_30 : nominal energy 3686.0 MeV
Note that BPM A6Q10 had glitches in the readback and BPM A3Q03 was bad.
This was taken into account.
Data ;
Plot
Stack 14 -
chi0 of 00_04_30 : nominal energy 3406.0 MeV
Note that BPM A6Q10 had glitches in the readback and BPM A3Q03 was bad.
This was taken into account.
Data ;
Plot
Stack 15 -
1p1 of 00_05_03 : nominal energy 3526.2 MeV
Note that BPM A6Q10 had glitches in the readback.
This was taken into account.
Data ;
Plot
Stack 16 -
1p1 of 00_05_06 : nominal energy 3525.7 MeV
Data ;
Plot
Stack 17 -
1p1 of 00_05_10 : nominal energy 3526.5 MeV
Data ;
Plot
Stack 18 -
1p1 of 00_05_13 : nominal energy 3525.95 MeV
Data ;
Plot
Stack 19 -
1p1 of 00_05_16 : nominal energy 3526.8 MeV
Data ;
Plot
Stack 20 -
1p1 of 00_05_19 : nominal energy 3525.4 MeV
Data ;
Plot
Stack 21 -
1p1 of 00_05_22 : nominal energy 3525.1 MeV
Data ;
Plot
Stack 22 -
1p1 of 00_05_27 : nominal energy 3526.2 MeV
Data ;
Plot
Stack 23 -
1p1 of 00_05_30 : nominal energy 3523.3 MeV
Note that for run 5564 the energy is affected by a miscalibration of
BPM house 40 for 1 hour (acnet event 86-122). This problem
arouse after power cycling the BPM electornics for that house.
Those events are not considered in the energy calculation.
Data ;
Plot
Stack 24 -
1p1 of 00_06_03 : nominal energy 3526.25 MeV
Data ;
Plot
Stack 25 -
1p1 of 00_06_04 : nominal energy 3526.25 MeV
Data ;
Plot
Stack 26 -
1p1 of 00_06_06 : nominal energy 3526.25 MeV
Note that BPM a6q08 gives a bad reading for the whole stack. It is masked
out in the calculation.
Data ;
Plot
Stack 27 -
1p1 of 00_06_09 : nominal energy 3528.9 MeV
Data ;
Plot
Stack 28 -
1p1 of 00_06_12 : nominal energy 3528.5 MeV
Data ;
Plot
Stack 29 -
psip of 00_06_14 : nominal energy 3686.5 3686.38 3686.25 3686.13 3686.0 3685.88 3685.75 3685.63 3685.5 3684.5 MeV
Data ;
Plot
Stack 30 -
psip of 00_06_16 : nominal energy 3687.5 3686.0 MeV
Data ;
Plot
Stack 31 -
chi0 of 00_06_18 : nominal energy 3384.75 MeV
Data ;
Plot
Stack 32 -
chi0 of 00_06_23 : nominal energy 3422.0 3409.0 MeV
Data ;
Plot
Stack 33 -
chi0 of 00_07_02 : nominal energy 3414.0 MeV
1) There are not acnet information for the first 4 run of the
stack.
The values reported here are the online calculation corrected for
the different systematics between online and offline calculation
(E_off=E_on+49.9KeV average; sigma_off=sigma_on-11.7KeV average).
2) A4Q03 has been masked out: his signal was wrong because of a
failure in his readout card.
Data ;
Plot
Stack 34 -
chi0 of 00_07_05 : nominal energy 3430.0 3400.0 MeV
Note that A4Q03 has been masked out: his signal was wrong because of a
failure in his readout card.
Data ;
Plot
Stack 35 -
1p1 of 00_07_10 : nominal energy 3526.2 MeV
Data ;
Plot
Stack 36 -
1p1 of 00_07_12 : nominal energy 3526.2 MeV
Note that RF frequency information is missing for events 28-86
in run 7009. These events are not used by the
energy-calculation routines.
Data ;
Plot
Stack 37 -
1p1 of 00_07_15 : nominal energy 3525.8 MeV
Data ;
Plot
Stack 38 -
1p1 of 00_07_16 : nominal energy 3525.8 MeV
Data ;
Plot
Stack 39 -
1p1 of 00_07_22 : nominal energy 3524.7 MeV
NOTE: ACNET connection broken on Sat 22 Jul 2000, from 18:58 to 20:19,
during run 7033, due to power outage in Wilson Hall. No ACNET data
recorded for those 81 minutes.
Data ;
Plot
Stack 40 -
1p1 of 00_07_25 : nominal energy 3527.2 MeV
Data ;
Plot
Stack 41 -
1p1 of 00_07_29 : nominal energy 3526.2 MeV
Data ;
Plot
Stack 42 -
chi0 of 00_08_03 : nominal energy 3392.0 MeV
Data ;
Plot
Stack 43 -
chi1 of 00_08_05 : nominal energy 3510.0 MeV
Data ;
Plot
Stack 44 -
chi1 of 00_08_09 : nominal energy 3511.6 3510.6 3510.85(changing) 3511.1 3510.65(changing) 3510.1 3509.6 MeV
Data ;
Plot
Stack 45 -
ddbar of 00_08_12 : nominal energy 3810.0 3800.0 3798.0 MeV
Data ;
Plot
Stack 46 -
ddbar of 00_08_17 : nominal energy 3770.0 MeV
Data ;
Plot
Stack 47 -
chi0 of 00_08_19 : nominal energy 3365.0 3340.0 MeV
Data ;
Plot
Stack 48 -
ddbar of 00_08_24 : nominal energy 3836.0 MeV
Data ;
Plot
Stack 49 -
psip of 00_08_26 : nominal energy 3686.0 MeV
Note : BPM A1Q8 had spikes in a few events in run 7146 and 7148.
These events are not considered in the energy calculation.
Data ;
Plot
Stack 50 -
psip of 00_10_09 : nominal energy 3686.0 MeV
Data ;
Plot
Stack 51 -
psip of 00_10_15 : nominal energy 3686.0 MeV
Data ;
Plot
Stack 52 -
injection energy of 00_10_22 : nominal energy 4270.0 MeV
Note that the energy has been calculated using the psip as reference
orbit, which is very different from the injection orbit.
The energy here reported is approximate.
Data ;
Plot
Stack 53 -
injection energy of 00_10_30 : nominal energy 4267.0 MeV
Note that the energy has been calculated using the psip as reference
orbit, which is very different from the injection orbit.
The energy here reported is approximate.
Data ;
Plot
Stack 54 -
psip of 00_11_06 : nominal energy 3704.0 3686.0 3666.0 MeV
Data ;
Plot
useful links:
E835 Home Page
Luminosity Home Page
E835 Y2K run info table
Pbar Electronic logbook Y2K;
Electronic logbook 96/97
Beam Ecm spectrum files run per run and
table of statisctics.
Energy Calculation detailed files run per run.
Acnet event and int. lum. (every /e835/people/2 min) association table run per run.
E835 Y2K OLD Offline energy calculation stack per stack
E835 96/97 run: Offline energy calculation stack per stack
Maintained by Gabriele Garzoglio.
Comments, problems or questions -- please send
mail.