The peak luminosity and integrated luminosity numbers presented on this page are an average of the measurements at CDF and D0.

Weekly Integrated Luminosity



Fiscal Year Integrated Luminosity



Fiscal Year Peak Luminosity



Integrated Luminosity




Peak Luminosity




Integrated Luminosity per week


The Integrated luminosity per week shown in these two plots uses the total integrated luminosity of the last 5 stores and the total hours for those 5 stores and extrapolates to a 1 week time period. It is not a true week (see the first plot on this page for a true week).

Integrated Luminosity and Store Hours per Week



Average Store Hours per Week



Available Pbars


This plot contains the total pbars available at the start of a Collider shot.

Average Pbar Accumulation Rate



The average accumulation rate is defined as (the number of pbars available to the collider (previous plot) - the number of pbars left after the previous store)/hours between the previous store start and shot setup start.

Peak Luminosity and Pbar Efficiency



Collider Transmission Efficiencies




Collider Emittances




Luminosity Density


The luminosity density is the peak luminosity divided by (protons per bunch/ 250e9). It is an attempt to scale out the proton contribution to luminosity. The model curve assumes 90% extraction, 76% efficiency to low Beta, and 12 pi pbar beams. The luminosity potential models that used to appear here are no longer valid with the move to Recycler only shots.

Store Parameters

Parameter Last Store Best Store Last 10 Stores (Ave) Best 10 Stores (Ave) FY Average Previous FY (last 50) FY End Goal (Design) FY End Goal (Base)  
Initial Luminosity 214.2 286.3 212.4 276.6 163.7 97.9 199.0 107.0 10^30/cm^2/sec
Integrated Luminosity per store 3566.2 8407.9 6633.1 8087.3 4880.9 3275.3 6857.0 3851.0 inverse nb
Luminosity per week - - 34.3 - 20.2 16.8 32.2 18.1 inverse pb
Store Length 8.3 25.3 25.4 24.2 21.4 24.1 22.0 22.0 Hours
Store Hours per week - - 131.6 - 88.5 123.7 105.0 101.0 Hours
Shot setup time -2.8 -3.0 -2.4 -2.3 -2.4 -2.7 2.6 2.6 Hours


TEVATRON Parameters

Parameter Last Store Best Store Last 10 Stores (Ave) Best 10 Stores (Ave) FY Average Previous FY (last 50) FY End Goal (Design) FY End Goal (Base)  
Protons per bunch 258.5 239.0 253.1 256.2 248.8 238.3 260.0 250.0 1e9
Pbars per bunch 60.4 85.3 68.4 81.9 53.9 36.6 60.0 38.3 1e9
Proton Efficiency to low ß 66.3 53.4 62.8 60.0 61.3 64.9 - - %
Pbar Efficiency to low ß 64.5 75.5 74.2 77.9 75.8 69.1 80.0 76.0 %
HourGlass factor .67 .66 .67 .66 .67 .67 .65 .65
Initial Luminosity lifetime .0 .0 .0 .0 .0 .0 .0 .0 Hours
Asymptotic Luminosity lifetime .0 .0 .0 .0 .0 .0 .0 .0 Hours
Effective Emittance 12.1 11.5 13.4 12.4 13.7 14.8 17.0 17.0 π mm mr


AntiProton Parameters

Table undergoing revision, will be corrected soon



File last written at: Mon Oct 01 15:10:00 CDT 2007