Number of cavities per cryomodule 3 6 Beta (geometric) 0.61 0.92 Operating temperature, K 2 2 Coupler power rating (TW and full reflection), kW 110 110 Tables 3.19 and 3.20 summarize the static heat loads for the low- and high-beta cryomodules. In addition, there is a dynamic heat load to 2 K somewhat lower than 20 W per cavity or 60 W for each LB650 cryomodule and 25 W per cavity or 160 W for each LB650 cryomodule (see Table 2.7). Table 3.19: Low-beta cryomodule static heat loads Each cavity (W) Multiplier Total per CM (W) 70 K 5 K 2 K 70 K 5 K 2 K Input coupler (static) 4.4 1.8 0.2 3 13 5 1 Support post 0.4 1.8 0.0 6 2 11 0 MLI 30.6 0.0 1.5 1 31 0 1 Cold to warm transition 0.7 0.1 0.0 2 1 0 0 Total static (per CM) 48 16 2 Table 3.20: High-beta cryomodule static heat loads Each cavity (W) Multiplier Total per CM (W) 70 K 5 K 2 K 70 K 5 K 2 K Input coupler (static) 4.4 1.8 0.2 6 26 11 1 Support post 0.4 1.8 0.0 12 5 22 0 MLI 53.3 0.0 2.6 1 53 0 3 Cold to warm transition 0.7 0.1 0.0 2 1 0 0 Total static (per CM) 86 32 4 The pressure rating requirements for each of the systems in the cryomodule are summarized in Table 3.21. The pressure ratings are the same for both low and high-beta cryomodules. All presented pressures are differential pressures. Table 3.21: System pressure ratings for low- and high-beta cryomodules System Warm MAWP Cold MAWP (bar) (bar) 2 K, low pressure 2 4 2 K, positive pressure piping 20 20 5 K piping 20 20 45-80 K piping 20 20 Insulating vacuum 1 atm external, N/A
Number of cavities per cryomodule 3 6 Beta (geometric) 0.61 0.92 Operating temperature, K 2 2 Coupler power rating (TW and full reflection), kW 110 110 Tables 3.19 and 3.20 summarize the static heat loads for the low- and high-beta cryomodules. In addition, there is a dynamic heat load to 2 K somewhat lower than 20 W per cavity or 60 W for each LB650 cryomodule and 25 W per cavity or 160 W for each LB650 cryomodule (see Table 2.7). Table 3.19: Low-beta cryomodule static heat loads Each cavity (W) Multiplier Total per CM (W) 70 K 5 K 2 K 70 K 5 K 2 K Input coupler (static) 4.4 1.8 0.2 3 13 5 1 Support post 0.4 1.8 0.0 6 2 11 0 MLI 30.6 0.0 1.5 1 31 0 1 Cold to warm transition 0.7 0.1 0.0 2 1 0 0 Total static (per CM) 48 16 2 Table 3.20: High-beta cryomodule static heat loads Each cavity (W) Multiplier Total per CM (W) 70 K 5 K 2 K 70 K 5 K 2 K Input coupler (static) 4.4 1.8 0.2 6 26 11 1 Support post 0.4 1.8 0.0 12 5 22 0 MLI 53.3 0.0 2.6 1 53 0 3 Cold to warm transition 0.7 0.1 0.0 2 1 0 0 Total static (per CM) 86 32 4 The pressure rating requirements for each of the systems in the cryomodule are summarized in Table 3.21. The pressure ratings are the same for both low and high-beta cryomodules. All presented pressures are differential pressures. Table 3.21: System pressure ratings for low- and high-beta cryomodules System Warm MAWP (bar) Cold MAWP (bar) 2 K, low pressure 2 4 2 K, positive pressure piping 20 20 5 K piping 20 20 45-80 K piping 20 20 Insulating vacuum 1 atm external, N/A
PIP-II_CDR_v.0.0.docx