	<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
76	82	494936	12	77	420606	12	78	560732	13	04-JUL-07

Thr_Max in register units for M3R4-76

Thr_Max in register units for M3R4-76

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	80	78	86	93	84	79	74	90	79	89	74	81	77	84	77	90
FEB-2	83	83	78	76	77	91	74	76	69	77	68	81	76	71	74	78
FEB-3	70	75	75	73	77	77	78	76	86	75	80	76	79	87	80	79

Noise rate at Thr_Max [counts/sec] for M3R4-76

Noise rate at Thr_Max [counts/sec] for M3R4-76

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	542401	683161	427286	519206	358289	576432	570737	346332	462306	365612	378409	529242	593251	467616	502470	596227
FEB-2	400134	579428	351621	352987	336153	373980	405240	390269	201983	349311	519243	372497	350459	447330	519602	779462
FEB-3	553809	540466	447734	358429	438787	443572	696675	444703	430083	559382	861180	434322	882963	413948	713819	751835