From:	KEKVAX::TERADA        6-JUN-1996 11:16:49.66
To:	CHIBAJ
CC:	MINORU,BANPAKU,YAMANOI,KONDO,KOHRIKI,UNNO,IWASAKIH,TERADA
Subj:	Request for a proton irradiation (T363) at EP1

Dear Chiba-san,

	We want to carry out a proton irradiation on silicon detectors and
related materials (T363) during the beam cycle which will be starting
on June 19.

Outline of our plan is as follows;

Purpose: To verify radiation hardness of the most updated design of a 
CDF SVX-II silicon strip detector.
To study radiation effects on various materials especially resins and 
adhesives to be used for the construction of CDF and ATLAS silicon detectors.
 
Target fluences:
	i) Low fluence run: 0.4 x 10e14/cm2  over 1.6 x 7.5 cm2
	ii) High fluence run: 2.0 x 10e14/cm2 over 2.5 x 10cm2

Expected exposure time:
	i) for low fluence run:   1 hour.  
	ii) for high fluence run : 7 hours
		------------------
                   Total : 8 hours

	We assumed an extracted beam intensity as 2 x 10e12 ppp in every
        3 seconds.
	

Materials and their thickness intercepting the beam at upstream of EP1-A 
 1. For low fluence exposure;
     Silicon detector (1.6cm x 7.5cm x 0.3mmt) -------- 4   0.013 X0
     Al foil (0.1mmt) + Mylar (0.1 mmt)   ------------- 1   0.001 X0
	   
           	        Total:  0.014 X0

 2. For high fluence exposure;
     Kapton flexible PC (2.5cm x 10cm x 0.3mmt)   ---------- 6   0.021 X0
     Silicon + adhesive + Kapton (2.5cm x 10cmx 0.4 mmt) --- 3   0.015 X0
     CFRP plate  (0.3 mmt)              -------------------- 2   0.005 X0
     Al foil (0.1mmt) + Mylar (0.1mmt)    ------------------ 1   0.001 X0

			Total: 0.042 X0

Schedule:
	June 18 (Tue.) 14:00 - 15:00; Setup the movable stage and sample
				     materials in the EP1-A beam line
        June 21 (Fri.) 10:00 18:00 beam exposure (move the materials into 
       				  the beamline)*
	July 11 (Thu)  14:00 - 15:00 Take out the cold box from EP1 area
			            and bring it to the radiation safety
				    building.

     *No access to the beam area is required during the beam cycle
      since the materials will be brought into the beam line just for the 
      8 hour exposure time by means of a remote controled movable table.
	
Best regards,
Susumu Terada