FNAL Module Testing Status Week of 04/12-04/18

FNAL ARCS Testing Status Weekly Cumulative   A B F % A or B L12pu 0.00% L12pd L12su L12sd L34p L56p 46 2 152 1 3 98.1% R5N R5S R6 6 R7 Total

FNAL ARCS Testing Failures This Week (7949-7996) one unexpected pinhole - pulled (mod 7955 # 768) 7972 – no readout (does not find APVs) 7970 - breakdown current behavior @430V (see plots) Cumulative (7835-7996) 1 grade “B” (mishandling) 2 HV or high current problems 1 – no readout Total of 7 pinholes so far

IVs for module 7970 Test 1: 19mA Graded as “A” 23mA Test 2: Graded as “F” Unstable current beyond 400 V No high noise channel found Graded “A/F”