# Presentation: 487209

## Safety of Aerogel Upgrade

-     [0]       Overview of Aerogel
-     [I]        Used Material
-     [II]       Electrical (HV) concern
-     [III]      Heat Source
- 	[IV]      Gas
- 	[App.]  Data Sheets [1]~[8] (Listp.11)

- _Phenix High-pt Upgrade Team_

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [0] Overview of Aerogel Counter

- 10(phi) x 16 (z)
- segments

-   Aerogel (SiO2, n=1.0114):
- 22(z) x 11 (phi) x 12 (r) cm3

- PMT

-  Hydrophobic
-   Silica Aerogel (90% SiO2)
-  Install in the Phenix
-   west arm (W1 sector),
-   btw. PC2 & PC3.

- Light integration
- space

-   (1 segment)

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [I] Material (Material inside Al-box)

**All the parts are  under: **(I) Enclosed environment, and  (II) N2 gas flow

| Material  | Where to use |
| --- | --- |
| Al | Box, Lid |
| Black Paper | Light tighten’er 
[Note: Fully sandwiched by Al-lid and FR-4 ] |
| FR-4 | (1)Lid strengthen’er, (2)PMT base |
| MC901-Nylon | (1)PMT mechanical holder, 
(2)Spacer btw PMT & mu-metal
 See “Data Sheet 3” |
| Mylar | Inner box |
| PTFE(*1) (TeflonTM) | Reflector (Gore-TexTM)  See “Data Sheet 2” |
| Silica aerogel       | Aerogel  See “Data Sheet 1” |
| Metal, SiO2 | PMT |
| Mu-metal | B-shield |

- (*1) PTFE = polytetrafluoroethylene

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [I] Material (Connector, Cable) 

| Item | Ever used in Phenix ? | Fire Rate | Electrical |
| --- | --- | --- | --- |
| 01) Connector (HV) | Used in EMCal (but ours are 3-pin) | UL94V-0 | 5 kV |
| 02) Connector (Signal, at Preamp) | New | UL94V-0 | 300 V |
| 03) Connector (Signal, at Box) | Used in EMCal | UL94V-0 | 3 kV |
| 04) Connector (LED) | New | UL94V-0 | 600 V |
| 05) Cable (HV) | SL-v2YCEH (KERPEN)
 See “Data Sheet 4” | IEC60332,
IEC60332-3-24,catC | - |
| 06) Cable (Signal, PMT to Preamp) | RG174/U (Coleman)
 See “Data Sheet 5” | UL VW-1 (*1) | - |
| 07) Cable (Signal, Preamp to FEE) | UL2833 (Hitachi)
 See “Data Sheet 6” | UL VW-1 (*1) | - |
| 08) Cable (LED) | 1872A   LAN cable Category-5E (Belden) 
 See “Data Sheet 7” | CMR, 
UL 1666 Riser, 
UL-E108998 | - |
| 09) Cable (LV for Preamp) | M39118 (CDT) 
 See “Data Sheet 8”  | UL1581, PLTC/ITC/CM | - |

**All the parts are **
- (I)  Fire-Rate-Acquired, or/and
- (II) Previously CAD-safety approved for use in Phenix

- (*1) VW1 == “vertical wire” class 1 (most strict)
-        http://ulstandardsinfonet.ul.com/

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [I] Material (Silica Aerogel)--- Safety issue associated with assembly in Bldg. 510. ---

- [I] Material (Silica Aerogel)--- Safety issue associated with assembly in Bldg. 510. ---

- It is Silica Aerogel (90% SiO2)
- Aerogel can be micro dust when fully broken.
- 	- _Fragile_, because n=1.0114 (density =0.04 [g/cm3] )
- Assembling of Aerogel at 510-Highbay
-        Just in case of crushing into small pieces,
- _(1)Person_: Better with Mask, Gloves, After-Washing-of-Hands
- _(2)Trash-can_: Better to have Enclosed-can for broken-Aerogel

- From MSDS (For more info, see “data sheet section [1]” )

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [II] HV tolerances test

- _1. Bleeder (PMT base)_
-      Material: FR-4-97.
-      Volume resistance rate: > 10^6 M ohm - cm.
-      Surface resistance: > 10^4 M ohm.
-      Dielectric breakdown voltage: > 40 kV.
-      Nonflammable rate: UL 94V-0.
-      Moisture absorption rate: < 0.35 %
-    Time: 12 hours (Long-term test of a bleeder)
-    Temperature: Ave. 29.1 deg.C, (27.1 C ~ 30.5 C)
-    Humidity: Ave. 54.5 % (52 % ~ 63 %)
-    High voltage module: HSR-12N (Matsusada Precision Inc.).
-    Supply voltage: 4,500 - 4,690 V ( = 2 times + >1000 V)  (increasing slowly).
-    Idling current: about 0.45 mA.
-    **Test result:**
-    _**No spark and no smoke**_
- _2. Lid of the box _
- Material: R-1705 in FR-4.
- Nonflammable rate: UL 94V-0.
- Moisture absorption rate: < 0.25 %.
-    **Test Results:**
**   **_**Stands up to >4kV**_** **(1st)
-    Tested in various places. (V_dielectric_breakdown (Tested several times, 1st2nd 3rd))
-    <Place-1> P. C. board of a bleeder (No part). (btw GND & HV terminals).
-   			9.5  8.7  8.9 kV
-    <Place-2> Signal area on PC board (a lid of the box)(btw. 2 terminals in a connector)
-   			5.8  3.9  3.9 kV
-    <Place-3> High voltage area on PC board (a lid of the box) (btw. 1 terminal of connector & GND)
-    			4.9  5.5  4.2 kV
-    <Place-4> Connector "770994-1 (Right-angle 2-pin header)".
-    			5.8  6.1  6.0 kV

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [II] Electrical safety concern (HV)

- _HV connector _
- _on the lid of box_
-  o  Dielectric withstanding voltage: 5kV per gap.
-  o  Moreover, among 3 pins
-      use only 1st and 3rd pin.
-  o  And the Exposed pins are potted with RTV-162.

- Tail-view

- Top-view

- Head-view

- HV connectors

- bare pins

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [III] Heat source

- time

- dT

**3.5K**

- Therefore, No need of cooling

- Bench test (PMT in Al-Box) shows
-      only 3.5K(@0.68W/PMT) rise
-      _even without air flow_
- (2) Moreover, in real,
-      R         = 680kOhm              330kOhm
-      Power = 0.34W(Half)/PMT  0.68W/PMT

- _(R=330kOhm)_

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [IV] Gas

- Nitrogen flow
- - For Purging (~800 liters per hour)
- of any outgas from chemicals inside the Al-box
- - (As already discussed,) not the issue for cooling.
-  Note: Requirements
- _Clean_ & _Dry_ N2
- 	 Otherwise, _irreversible results_ on Aerogel transmutation characteristics.
- 	Note that we have ~15 p.e., which we do not like to lose at all.

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## Blank  Spacing Page

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## From this page, Data Sheet. 

| Data sheet
No. | 
Item | 
Detail |
| --- | --- | --- |
| [1] | Silica Aerogel | SP-12 (Matsushita) |
| [2] | Reflector | DRP reflector (Gore-Tex) |
| [3] | PMT holder  | MC901-Nylon (Quadrant EPP) |
| [4] | Cable (HV) | SL-v2YCEH (KERPEN) |
| [5] | Cable (Signal, PMT to Preamp) | RG174/U (Coleman) |
| [6] | Cable (Signal, Preamp to FEE) | UL2833 (Hitachi-densen) |
| [7] | Cable (LED) | 1872A, LAN cable Category-5E (Belden) |
| [8] | Cable (LV for Preamp) | M39118 (CDT)   |

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

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- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [1] MSDS for AEROGEL

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- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [2] MSDS for GORETEX (1/3)

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [2] MSDS for GORETEX (2/3)

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [2] MSDS for GORETEX (3/3)

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- [ 2003 / Sep / 18 ]  Aerogel Safety Review

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- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [3] MSDS for PMT holder (MC901, (1/3))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [3] MSDS for PMT holder (MC901, (2/3))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [3] MSDS for PMT holder (MC901, (3/3))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

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- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [4] Data Sheet for HV cable (KERPEN SL-v2YCEH, (1/2))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [4] Data Sheet for HV cable (KERPEN SL-v2YCEH, (2/2))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

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- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [5] Data Sheet for Signal Cable (PMTPreamp)( RG174/G, (1/1) )

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

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- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [6] Data Sheet for Signal Cable (PreampFEE)(Hitachi-UL2833, (1/5))

- HITACHI Densen (electrical cable) Co. LTD. [Seal]

- Specification

- Product ID :UL2833

- 1996 Oct.18th

- Hidaka factory

- Approval [Seal]

- Qualification [Seal]

- Documentation [Seal]

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [6] Data Sheet for Signal Cable (PreampFEE)(Hitachi-UL2833, (2/5))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [6] Data Sheet for Signal Cable (PreampFEE)(Hitachi-UL2833, (3/5))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [6] Data Sheet for Signal Cable (PreampFEE)(Hitachi-UL2833, (4/5))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [6] Data Sheet for Signal Cable (PreampFEE)(Hitachi-UL2833, (5/5))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

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- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [7] Data Sheet for LED Cable(Belden1872A, (1/5))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [7] Data Sheet for LED Cable(Belden1872A, (2/5))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [7] Data Sheet for LED Cable(Belden1872A, (3/5))

- [7] Data Sheet for LED Cable(Belden1872A, (3/5))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [7] Data Sheet for LED Cable(Belden1872A, (4/5))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [7] Data Sheet for LED Cable(Belden1872A, (5/5))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

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- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review

## [8] Data Sheet for LV cable (M39118,  (1/1))

- Phenix High-pt Upgrade Team

- [ 2003 / Sep / 18 ]  Aerogel Safety Review