	<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
32	78	465360	13	75	454460	12	77	476736	13	22-JUN-07

Thr_Max in register units for M3R4-32

Thr_Max in register units for M3R4-32

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	75	82	76	79	74	81	81	73	83	72	81	78	77	78	73	82
FEB-2	77	82	71	82	73	76	80	83	69	76	67	71	64	78	66	80
FEB-3	76	72	83	81	80	76	73	86	73	74	71	79	75	80	82	73

Noise rate at Thr_Max [counts/sec] for M3R4-32

Noise rate at Thr_Max [counts/sec] for M3R4-32

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	470200	686520	419134	489032	334110	444840	423380	410010	375385	365467	445534	470013	424144	667635	520236	500119
FEB-2	718705	503000	566491	392101	278533	444489	394627	412922	561671	358216	359496	342347	374947	413340	620230	530247
FEB-3	502508	618149	562746	412931	361803	371960	335362	502741	514732	427218	514033	348956	511144	538209	619243	486037