Changes in delivered luminosity by varying the store length, using the luminosity projection model described in in Beams-doc-2022 Vaia Papadimitriou 30 January, 2007

Introduction  1. The model used is the one described in Beams-doc-2022, by Dave McGinnis.  2. The model predicts weekly integrated luminosity on the basis of 16 input parameters described in the following page.  3. I assume by default 22 hour long stores and 6 pbar transfer shots between stores.

Selected Inputs for the model described in Beams-doc-2022  1. Number of protons per bunch 260 x 10 9  2. Luminosity 100 x  b -1 / sec  3. Luminosity 300 x  b -1 / sec  4. Init Tevatron 80  b -1 /sec 7.7 hours  5. Init Tevatron 160  b -1 /sec 6.9 hours  6. HEP store hours per week 100 hours  7. Acc-Rec Transfer 0x %  8. Acc-Rec Transfer 300x %  9. Acc-Rec transfer time 0.25 hours  10. Recycler lifetime 500 hours  11. Recycler mining efficiency 97%  12. Zero stack stack rate 20x10 10 /hour  13. Half rate stack size 200x10 10  14. Maximum stack size 400x10 10  15. Timeline Utililization Factor 80%  16. Accumulator leftover factor 15%

Integrated luminosity pb -1 per week for a 22 hour store, 100 store hours per week

Integrated luminosity variations by varying the store length, 100 store hours per week

Integrated luminosity pb -1 per week for a 22 hour store, 120 store hours a week

Integrated luminosity variations by varying the store length, 120 store hours per week