	<i>Thresholds Scan<br />185 M3R4 chambers passed the tests</i></font> Thresholds Scan 185 M3R4 chambers passed the tests

Tables below present:
- Thr_Max(r.u.), Thresholds in register units at Maximum of noise rate;
- N_Max, Noise rate at Thr_Max in counts/sec;
- D_100 = Thr_100(r.u.) - Thr_Max(r.u.) where Thr_100(r.u.) is the threshold in register units at noise rate = 100/s.
The following expression relates the real threshold (measured from the base-line of physical signals) with the thresholds determined by the register units:
Thr(fC)*S(r.u./fC) = Thr(r.u.) - Thr_Max(r.u.)+ OFFSet(r.u.).
Here, OFFSet=17 register units;
S=3.40 r.u./fC is the charge sensitivity corresponding to S=8mV/fC taken for M3R4 chambers;
(Note, that 1 register unit = 2.35 mV)

	FEB-1. Mean values.			FEB-2. Mean values.			FEB-3. Mean values.
Chamber	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Test Date	Plots	Comments
105	83	561584	13	77	464188	12	79	406660	12	13-JUN-07

Thr_Max in register units for M3R4-105

Thr_Max in register units for M3R4-105

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	76	82	78	86	86	87	87	92	75	89	78	85	81	86	85	80
FEB-2	77	78	70	77	84	73	75	71	79	74	79	78	75	77	83	83
FEB-3	81	77	83	75	82	89	74	75	76	78	77	81	84	77	81	76

Noise rate at Thr_Max [counts/sec] for M3R4-105

Noise rate at Thr_Max [counts/sec] for M3R4-105

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	653581	620629	663063	646093	476869	475233	527131	570076	497077	376705	532746	335971	554211	440861	723747	891351
FEB-2	333127	493148	390336	560954	328653	483774	333746	391146	314522	486551	425441	474317	602194	565141	557434	686517
FEB-3	365738	487384	454004	274582	388809	619843	349427	219902	523401	285232	432895	250246	397884	448054	542522	466631